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89 Iroc - 355,twin gt35's,megasquirt

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Old Aug 11, 2013 | 12:54 PM
  #451  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
Nice, gotta nickname your Camaro "Freddy" cuz it sounds like one of those BOV's you'd hear coming from Freddy Krueger's basement, sounds sweet as hell...



And a fitting tune for the m.u.l.l.e.t machine
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Old Aug 11, 2013 | 01:56 PM
  #452  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

lol tis not a ****** machine,ok ok with the mismatched rims and primer it does resemble one, but not for much longer

decided to have some fun on the streets today after i droped the wife off at work , took a nice 15min long video of screwing around but unfortunatly the dam camaera ended up pointed at the sky for most of it lmfao. so that didnt work out to well
i really need to find someway to mount my iphone on the dash.

i dont have power steering so i dislike holding the phone with one hand while screwing around , dam car will get away from u pretty damn fast
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Old Aug 11, 2013 | 07:42 PM
  #453  
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Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
decided to have some fun on the streets today after i droped the wife off at work , took a nice 15min long video of screwing around but unfortunatly the dam camaera ended up pointed at the sky for most of it lmfao. so that didnt work out to well
i really need to find someway to mount my iphone on the dash...
Can't go wrong with a Go-Pro, I just got mine in the mail yesterday...
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Old Aug 11, 2013 | 07:59 PM
  #454  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
Can't go wrong with a Go-Pro, I just got mine in the mail yesterday...
lol i was just looking on ebay for one, thinking about picking one up
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Old Aug 11, 2013 | 11:40 PM
  #455  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

here ya go rob last 2 clips are from about 45 mins ago when i picked the wife up from work , thought i poped a coupler on the second pull but i didnt still have to look at the datalog and see why she poped out the ex system
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Old Aug 12, 2013 | 04:23 PM
  #456  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Nice work bro, gotta work on that off idle a little bit more but she's getting there...
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Old Aug 12, 2013 | 04:52 PM
  #457  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
Nice work bro, gotta work on that off idle a little bit more but she's getting there...


its not that its off there whats happening is im getting false ae triggering due to noise on the tps wire so i have ae threshold set higher then normal , so at just off idle there is no ae enrichment at very light throttle opening

i know what the issue is , the harness that i got with the ms ( bought used) was homemade and did not have a shielded wire for the ignition , and thats were the noise is comming from.

i have a brand new harness from diyautotune to put in the car trouble is finding a day i can be without the car to install it as my truck is still down
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Old Aug 13, 2013 | 05:21 PM
  #458  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Very nice work so far Dave, keep gettin it done...
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Old Aug 14, 2013 | 07:12 PM
  #459  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

thanks should have some new videos tongiht
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Old Aug 14, 2013 | 09:21 PM
  #460  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Hit up the track tonight, air was freaking great. Dave you missed our traditional Diner, and/or White Castle run afterward, Grand National's everywhere lol. What other video's are you planning to throw up...?
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Old Aug 14, 2013 | 09:49 PM
  #461  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
Hit up the track tonight, air was freaking great. Dave you missed our traditional Diner, and/or White Castle run afterward, Grand National's everywhere lol. What other video's are you planning to throw up...?
I'm sitting in the wife's job parking lot right now, going to take a video on the way home. Should have something posted in 20-30 mins
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Old Aug 14, 2013 | 09:51 PM
  #462  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

I miss White Castle sooooo much. Lol I'm tempted to send u money have u pick me up some pack them in a cooler and overnight them to me.......



Would be well worth the 200 or so it would prolly cost
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Old Aug 15, 2013 | 07:14 PM
  #463  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

video came out really crappy , my homeade phone mount vibrates to much so its really hard to see anything in the video so i didnt bother posting it . it is up on my youtube page if u want to see it anyways though
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Old Aug 17, 2013 | 07:29 AM
  #464  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Come on Dave, throw up a real video. Give us a walk around, give us some details during the videoing, and maybe a short burnout with the wife filming it from outside of the car. Oh, and the daytime may help a little too lol...
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Old Aug 17, 2013 | 01:59 PM
  #465  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

its rough man i live in a small town of about 1,300 ppl hp and sherrifs are in town during the day, and theres not a whole lot of places to screw around in the car, im working on it though


btw iroc=3 700r4 = 0

this one slips in 3rd now , it was built with with one of the top of the line kits as well, thing shifts great on the wot 2-3 shift but then it just starts slipping
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Old Aug 17, 2013 | 04:05 PM
  #466  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
I miss White Castle sooooo much. Lol I'm tempted to send u money have u pick me up some pack them in a cooler and overnight them to me.......



Would be well worth the 200 or so it would prolly cost
Ahhh....I love White Castles....murder burgers. Now that I've gotten to be an older geezer, my intestines have a hard time with the onions. You don't want to be within 50 ft. of me 3 hours after I consume those things..but I still love 'em!!
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Old Aug 17, 2013 | 06:09 PM
  #467  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
btw iroc=3 700r4 = 0

this one slips in 3rd now , it was built with with one of the top of the line kits as well, thing shifts great on the wot 2-3 shift but then it just starts slipping
"Shift valve / servo pump is on its' way out, also check for accumulator blockage"...

- Paul
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Old Aug 17, 2013 | 08:28 PM
  #468  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
"Shift valve / servo pump is on its' way out, also check for accumulator blockage"...

- Paul
prolly pull it out next week as the builder wont be back in town till then.
it has one of dana's pro street/pro street elite kits in it which should be good for 750hp........
for now im babying it around town in 1st/2nd gear only having 2:73 rear gears helps out alot with that as well
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Old Aug 24, 2013 | 03:54 AM
  #469  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

You've been away from e-town for awhile, check out this Celica's sixty foot...;

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Old Aug 24, 2013 | 10:25 PM
  #470  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

yes sir, that is getting it done!
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Old Aug 24, 2013 | 10:59 PM
  #471  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

nice, i miss e-town but dont miss anything else about crappy *** new jersey.
btw the transmission didnt break or burn up , the aduster on the tv cable let the cable come out of adustment , when i would go wot the cable would only pull about 1/4 of the way.

got that fixed now my tv valve is sticking, its stuck at about halfway so now the car wont shift till about 3,200 rpms makes me look like an a-hole when driving around town but nothing i can do about it till i get the car back on my friends lift to fix it.

which hopefully will be tommorow depnding on how i feel i just got out of the hospital for an abscessed tooth
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Old Aug 25, 2013 | 08:14 AM
  #472  
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Car: 1990 Trans Am GTA
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Transmission: 700R4
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
nice, i miss e-town but dont miss anything else about crappy *** new jersey.
Of course your gonna say that cuz you can't come back...

Originally Posted by project89
btw the transmission didnt break or burn up , the aduster on the tv cable let the cable come out of adustment , when i would go wot the cable would only pull about 1/4 of the way...
You also need the correct TPI throttle cable, the one you have looks like an LG4 piece...

Originally Posted by project89
got that fixed now my tv valve is sticking, its stuck at about halfway so now the car wont shift till about 3,200 rpms makes me look like an a-hole when driving around town but nothing i can do about it till i get the car back on my friends lift to fix it...
Why don't you just do what you tell everybody else to do, just get a T350 and be done with it...
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Old Aug 25, 2013 | 08:38 AM
  #473  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

i would do a th400. on a turbo car with a low gear (sub 3.50) it would still be real streetable. if not that i would do a 4l80. th350 could get it done, but the 400 is a sure bet.
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Old Aug 25, 2013 | 09:44 AM
  #474  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by DIGGLER
i would do a th400. on a turbo car with a low gear (sub 3.50) it would still be real streetable. if not that i would do a 4l80. th350 could get it done, but the 400 is a sure bet.
i have a 4l80 with a full manual vb i didnt like it , up and down shifts are way to harsh

if this 700r4 dont hold up ill switch out to a pg or th400 , car has 2:73's in it now at most i might put some 3.08's in it

the 700 has one of danas top of the line kits in it should be good for 725 hp
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Old Aug 25, 2013 | 11:16 AM
  #475  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
i have a 4l80 with a full manual vb i didnt like it , up and down shifts are way to harsh
must have an aweful tight converter in the 4l80 to be so harsh?
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Old Aug 25, 2013 | 05:20 PM
  #476  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

2,800 10inch converter
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Old Aug 27, 2013 | 02:33 PM
  #477  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

trans is fixed my stupid tv cable adjuster came loose , i do have one other small issue but its a sticking tv valve , it sticks at about half throttle , so makes me look like an ahole when im cruising threw town, but it does go wot so im leaving it for now.

ill prolly be hitting the track this friday , should be some nice times as temps have dropped here drastically in the last few days
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Old Aug 27, 2013 | 03:04 PM
  #478  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Sweet, Good luck at the track bro. Have fun.
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Old Aug 27, 2013 | 03:48 PM
  #479  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by fasteddi
Sweet, Good luck at the track bro. Have fun.
thanks this is the only time ill be able to make it to the track this year before the season ends. sesaon is really short here. so i plan on running this thing hard


only thing that sucks is there is no tnt on the 30th so i have to put the car in a class to race so runs maybe limited.

ive got the 50hp nitous jets in the car now , i think im going to swap them for the 75 shot and pray the headgaskets hold
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Old Aug 27, 2013 | 03:55 PM
  #480  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

sweet good luck!!
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Old Aug 30, 2013 | 11:58 PM
  #481  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

not a good day should have known better as soon as the trailer got a flat in town.
anyways loaded up the car onto the trailer this morning get everything in the truck and go down to the gas station to fill the truck and notice the one trailer tire is getting low.
turns out i picked up a roofing nail in my parking lot. get that fixed and start heading north.

trucks running good then i hit the second mountian pass, had the truck floored and it would barley maintain 35/40mph going up the pass, i just figured it was due to the weight of the camaro and trailer. clear the pass and keep going , about 30 miles more and the truck starts running a lil rough.

made it about 80 miles out of town when the ecm took a dump in the truck again.ended up calling some friends to see if i could get somone to come pick up the trailer and get the truck towed. luckily my friend works at one of the shops in town and was able to grab the shops towtruck . so i unload the iroc and leave the wife with the truck and trailer, and haul as sback to town to meet my friend so i can drive his truck back up to grab the trailer while he towed the truck back on the flatbed.

one hell of an expensive day for not getting a dam thing done

im ready to pull the factory tbi crap off the truck and put a 4bbl intake,qet and hei vacum advance on it and call it good
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Old Aug 31, 2013 | 02:39 PM
  #482  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
not a good day should have known better as soon as the trailer got a flat in town.
anyways loaded up the car onto the trailer this morning get everything in the truck and go down to the gas station to fill the truck and notice the one trailer tire is getting low.
turns out i picked up a roofing nail in my parking lot. get that fixed and start heading north.

trucks running good then i hit the second mountian pass, had the truck floored and it would barley maintain 35/40mph going up the pass, i just figured it was due to the weight of the camaro and trailer. clear the pass and keep going , about 30 miles more and the truck starts running a lil rough.

made it about 80 miles out of town when the ecm took a dump in the truck again.ended up calling some friends to see if i could get somone to come pick up the trailer and get the truck towed. luckily my friend works at one of the shops in town and was able to grab the shops towtruck . so i unload the iroc and leave the wife with the truck and trailer, and haul as sback to town to meet my friend so i can drive his truck back up to grab the trailer while he towed the truck back on the flatbed.

one hell of an expensive day for not getting a dam thing done

im ready to pull the factory tbi crap off the truck and put a 4bbl intake,qet and hei vacum advance on it and call it good
Which ECM? Its happened more than once?
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Old Aug 31, 2013 | 05:04 PM
  #483  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by 34blazer
Which ECM? Its happened more than once?
this is the second time, first time was the original ecm, this was the replacement ecm

i forgoet the number offhand but the ecm is one year ecm used in the 92 5.7 tbi 3/4 ton trucks witht he manual trans only . its not used any other year or in any other viechal
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Old Aug 31, 2013 | 05:43 PM
  #484  
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

ecm in the truck is a 16146299 i do belive the 747 is a direct replacement or close to direct replacement though
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Old Sep 3, 2013 | 06:07 PM
  #485  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Put a 1994-95 truck 7427 ECM in it. Night & day better.

It can control a 700R4, 4L60E, 4L80E, manual trans.
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Old Sep 3, 2013 | 06:19 PM
  #486  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by junkcltr
Put a 1994-95 truck 7427 ECM in it. Night & day better.

It can control a 700R4, 4L60E, 4L80E, manual trans.
plug and play? or do i have to repin?
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Old Sep 4, 2013 | 03:48 AM
  #487  
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
plug and play? or do i have to repin?

heres a good right up courtesy of Gearhead EFI....

http://www.gearhead-efi.com/Fuel-Inj...ight=7427+swap
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Old Sep 4, 2013 | 04:36 PM
  #488  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

to much work , i dont need better either i just need working lmao.
i thinkt he 747 is a direct swap my friend came over with his dads tbi 92 with an auto and it has a 747 conecctors are the same , just need to verify pinouts.

first things first before i put another ecm in it is i have to find out whats causing the ecms do die

im going to assume for the moment the 02 wire is grounded somewere or shorted to a 5 or 12v + wire

my vacation is over so time to hunt down the issue is limited right now , not to mention we went from summer to what apears to be rain season lol , its rained just about everyday for the last 2 weeks
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Old Sep 20, 2013 | 05:59 PM
  #489  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

airport drags are tommorow and sunday down in st george, im waiting for my friend to text or call me when he gets to his shop , so i can head over mount up my slicks, and make a few suspension adjustments. and then swap out the rear gears for a set of 3:08's.

should be heading out around 6am tommorow, depending on how well the car hooks up ill be aiming for boost in the 16-23ish psi range after the first pass or 2.
For the first 1-2 passes im going to play it safe and run it with my daily driver street tune which is 9 psi and 19* total ign timing
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Old Sep 20, 2013 | 07:47 PM
  #490  
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: 89 Iroc - 355,twin gt35's,megasquirt

Good luck!

Looking forward to videos!
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Old Sep 20, 2013 | 08:57 PM
  #491  
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Car: 1991 Camaro RS
Engine: Lq4 6.0 SBE s485 turbo E85
Transmission: Fsi th400 stage 4. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: 89 Iroc - 355,twin gt35's,megasquirt

Good luck!
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Old Sep 20, 2013 | 11:18 PM
  #492  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

thanks guys just got started on the gear swap , and found out the posi unit is dying , so were pushing in one of his cars he has on the farm with an open carrier so i can pull the carrier and weld it up as a spool

its going to be a long night
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Old Sep 23, 2013 | 02:44 PM
  #493  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

ended up not running as i blew out the passengerside header gasket.if it wasnt for the fact that that downpipe has my wideband in it i prolly would have ran it like that but the leak was screwing with my wideband reading. my tune isnt 100% yet so im using afr target tables underboost for correction. with the funky wb readings that could have been disaster
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Old Sep 26, 2013 | 12:10 AM
  #494  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

headers dropped off at machine shop , the one warped slightly, prolly wasnt enough to cause major issues and prolly would have sealed up just fine but i figured what the hell its off lets get it machined flat.

i also started wet sanding the primer car should be going back into the paint booth this weekend for round 2 of epoxy primer. i will say this anyone thinking about using summits brand of epoxy primer , dont hesitate, my biggest concern with it is that it would sand like concrette , it sand very nicely , wet sanding it with 220 grit is no problem at all


i also had some really wild stencils made up for the car for when we spray the base/pearl/clear , im not letting the cat out of the bag just yet but i assure u this will be one wild paint job , im doing the car jet gloss black with red, blue, and silver pearls
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Old Oct 4, 2013 | 09:02 PM
  #495  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

im having no luck something gave up the ghost in the engine today, dropped the wife off at work then drove to work and all was fine , had to run home for something at lunch time started the engine and i got a knock, its not constant with rpm or constant at all.

its a complelty random knock but it is very loud, im going to assume either the cam started to go flat or its pulling a rocker stud out and the engine is running a lil rough , oil presure is still good though


tommorow i should know what the verdict is , hopefully its just a rocker stud. 9am were going to tow it over to my friends farm and im going to tear open the top end of the motor to see whats going on
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Old Oct 5, 2013 | 01:02 AM
  #496  
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Sounds like my luck with things. Dumb question, your sig says solid roller. You're running a solid roller with pressed in studs? Isn't that a bit risky?
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Old Oct 5, 2013 | 02:27 AM
  #497  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Drac0nic
Sounds like my luck with things. Dumb question, your sig says solid roller. You're running a solid roller with pressed in studs? Isn't that a bit risky?
thats my 427 unfortunatly i ran out of funds to complete that engine and im currently about 3 k over budget on it

right now the 355 has a hyd flat cam in it studs should have been fine
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Old Oct 5, 2013 | 08:07 PM
  #498  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

didnt tow the car , i fired it up this morning and it knoccked one time them quit , so i started to drive it over , about halfway there it developed a constant knock that varied with rpm and then it stopped again so its in the bottom end ,

my friend has a ton od sb's laying around so he gave me my choice of 3 engines a sbc 400 and 2 sbc 350's

the 400 is a 2 bolt main with 882 heads needs a hone, rings and bearings
one of the 350's is a 72 truck 4 bolt main 350 with 993 heads which i cant find any info on

and the last engine has been sitting outside and is a late model 350 tbi truck 350 1 piece rms and setup for a roller cam , but has a flat hyd in it , the cyls were rusted from water getting in the ports. i filled the cyls with oil and it finally broke free were i could turn the engine over . that engine had one pin rod bearing but it only hurt the rod not the crank ,


im thinking of using the roller block so i can swap to a roller cam and snag one rod out of my current engine to replace the damaged rod . then ditch the swirl port heads for my ported 882's and reuse the forged speedpro pistons out of the current engine

any of u guys happen to know anything about the 993 heads
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Old Oct 5, 2013 | 08:16 PM
  #499  
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
any of u guys happen to know anything about the 993 heads...
Garbage; small runners, small valves, although the 74cc chamber is decent for boost...

Stick with the 882's...
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Old Oct 5, 2013 | 11:20 PM
  #500  
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

been pricing up parts and i think i know what im going to do

reuse my 4 bolt block and forged crank/pistons if its not damaged
do a simple hone rering , polish the crank open up the bearing clearances juts a tad and switch back to a set of king engine bearings

swap out the current cam for a comp cams XE268H and do behive springs, with roller rockers

resuse the 882's and go back and give them a full port job as of now they just were cleaned up with some bowl and pocket work


after that drop the tpi back on it and swap out the gt3076's for the pair of gt3582's i have sitting here
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