the 355 twin turbo iroc officially lives
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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
the 355 twin turbo iroc officially lives
http://www.streetfire.net/video/first-start_2323193.htm
right after that video my starter started to make lots of noise and then it stoped spinning the motor over
which u can hear/see in this video
http://videos.streetfire.net/video/b...er_2323198.htm
so i pulled the starter and thgis is what i found


so i tore it down rebuilt it it and had it back in the car in 20 minutes flat
http://www.streetfire.net/video/star...ed_2323200.htm
so hopefully ill be pulling wheels and running just as fast as martys car here shortly
http://www.youtube.com/watch?v=P5e2c...layer_embedded
our engine combos are almost identical i have +5ci a lil better flowing set of cyl heads and slightly larger turbos , and i even have the 2 stage 100 shot nitrous system on the car
right after that video my starter started to make lots of noise and then it stoped spinning the motor over
which u can hear/see in this video
http://videos.streetfire.net/video/b...er_2323198.htm
so i pulled the starter and thgis is what i found


so i tore it down rebuilt it it and had it back in the car in 20 minutes flat
http://www.streetfire.net/video/star...ed_2323200.htm
so hopefully ill be pulling wheels and running just as fast as martys car here shortly
http://www.youtube.com/watch?v=P5e2c...layer_embedded
our engine combos are almost identical i have +5ci a lil better flowing set of cyl heads and slightly larger turbos , and i even have the 2 stage 100 shot nitrous system on the car
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Re: the 355 twin turbo iroc officially lives
so hopefully ill be pulling wheels and running just as fast as martys car here shortly
http://www.youtube.com/watch?v=P5e2c...layer_embedded
our engine combos are almost identical i have +5ci a lil better flowing set of cyl heads and slightly larger turbos , and i even have the 2 stage 100 shot nitrous system on the car
http://www.youtube.com/watch?v=P5e2c...layer_embedded
our engine combos are almost identical i have +5ci a lil better flowing set of cyl heads and slightly larger turbos , and i even have the 2 stage 100 shot nitrous system on the car

that doesn't mean you'll be faster, you'll just break parts faster... LOL, ok, that would be faster at something...
Good luck!
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
the 355 twin turbo iroc officially lives...
... the 305 will still smoke you though!
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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
Joined: Jul 2003
Posts: 10,538
Likes: 206
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
my 3.0 will smoke ur 5.0 :P

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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: the 355 twin turbo iroc officially lives
congrats! hope to see this into the 9's as well!
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Thread Starter
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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: the 355 twin turbo iroc officially lives
well i didnt relize the first video had no sound.
i just upgraded my ms firmware to the msn extra 3.1.1 and now cant find the afterstart enrichment settings but it does fire and run .
heres a video with sound
http://videos.streetfire.net/video/t...ly_2323424.htm
i just upgraded my ms firmware to the msn extra 3.1.1 and now cant find the afterstart enrichment settings but it does fire and run .
heres a video with sound
http://videos.streetfire.net/video/t...ly_2323424.htm
Joined: Jul 2003
Posts: 10,538
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
our engine combos are almost identical i have +5ci a lil better flowing set of cyl heads and slightly larger turbos...
Joined: Jul 2003
Posts: 10,538
Likes: 206
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Just for comparison, the first time Marty hit nines he was running the stock 991 truck heads with 1.72"/1.50", along with a set of 1.6:1 rockers, High Energy 268 Camshaft, a 90-shot of nitrous, and two stock GN turbo's. You should be making way more power than his did when he started, especially with the amount of nitrous your planning on running, which is why I was curious about your cam specs...
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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
Joined: Jul 2003
Posts: 10,538
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
234° / 244°, .488" / .510"...

How tight of an LSA; 108? 110??? Spill it...
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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: the 355 twin turbo iroc officially lives
108 its a really lumpy cam, the thing loped hard with the carb on the motor, and still loped pretty good with the fuel injection
once i got the motor warm and got it to idle it jumps between 650-800 rpms , if the cam does run good i may keep it i love the rough idle
once i got the motor warm and got it to idle it jumps between 650-800 rpms , if the cam does run good i may keep it i love the rough idle
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Definitely keep it... at least long enough to see what she does on the dyno, this way we can compare that one with the 224/224 when your done. By the way, my starter solenoid went on mine last night too. Was in Hazlet when it happened. Pain in the @ss to do in at night.
Joined: Sep 2003
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: the 355 twin turbo iroc officially lives
Thats a big cam and alot of overlap for a 355 turbo motor...goes against the conventional turbo cam wisdom
I'd be curious to see how it runs. I've seen one cam on a 108 lsa in Blown385's ride on theturboforums and his truck ran low 9's Definately not the normal turbo cam spec
I'd be curious to see how it runs. I've seen one cam on a 108 lsa in Blown385's ride on theturboforums and his truck ran low 9's Definately not the normal turbo cam spec Thread Starter
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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: the 355 twin turbo iroc officially lives
Definitely keep it... at least long enough to see what she does on the dyno, this way we can compare that one with the 224/224 when your done. By the way, my starter solenoid went on mine last night too. Was in Hazlet when it happened. Pain in the @ss to do in at night.
my starter chewed up the drive gear as u can see, the soillinoid wasnt pushing the gear all the way out.
prevoius owner had put the soiliniod on but didnt tighten it down all the way. luckily i had bought a starter rebuild kit proir to it going out.
it did slightly damage the flexplate though. when u crank the motor it has one noisy spot on it were the teeth are worn on it.
but dont matter i have to put an sfi flexplate in it anyways
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
marty ran the 224/224 summit cam and told me to go with that....
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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: the 355 twin turbo iroc officially lives
Thats a big cam and alot of overlap for a 355 turbo motor...goes against the conventional turbo cam wisdom
I'd be curious to see how it runs. I've seen one cam on a 108 lsa in Blown385's ride on theturboforums and his truck ran low 9's Definately not the normal turbo cam spec
I'd be curious to see how it runs. I've seen one cam on a 108 lsa in Blown385's ride on theturboforums and his truck ran low 9's Definately not the normal turbo cam spec260+/260+ @ .050 on 110 lsa's and they run good
marty also tried the 234/234 cam i belive on his setup it made more power but the limited rpm range of the tpi kept him from going any faster with it, but he also ran a pretty much bone stock tpi just removed the egr bumps and some slight matching behind the tb
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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
Joined: Jul 2003
Posts: 10,538
Likes: 206
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
ull get away with it with the 305, the 305 can turn more rpm before the tpi will kill it,the 305 is going to have to turn more rpm over the 350 anyways to make power...
The words anemic and restrictive in my sig is sarcasm lol...
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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: the 355 twin turbo iroc officially lives
btw uploading another video i finally found my afterstart enrichment settings in tuner studio. wish i could use megatune since i know it inside and out, but the version of code im running has to many options to use that to tune with
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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
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: the 355 twin turbo iroc officially lives
yeah it is but i love the way it sounds, on the other hand theres a few guys on the ttf.com running the much larger summit turbo cams on sb's
260+/260+ @ .050 on 110 lsa's and they run good
marty also tried the 234/234 cam i belive on his setup it made more power but the limited rpm range of the tpi kept him from going any faster with it, but he also ran a pretty much bone stock tpi just removed the egr bumps and some slight matching behind the tb
260+/260+ @ .050 on 110 lsa's and they run good
marty also tried the 234/234 cam i belive on his setup it made more power but the limited rpm range of the tpi kept him from going any faster with it, but he also ran a pretty much bone stock tpi just removed the egr bumps and some slight matching behind the tb
are those durations at .050? reason i ask is i have a crane solid cam in my 3.4 660 with ~230* at .050 on a 110 lsa. kind of a lopey cam but still pulls decent vacuum. crane doesnt offer this grind anymore under the new ownership so i dont have the exact specs. lift is ~.500". could i put a decent turbo setup on there without swapping cams? thanks and sorry for the hijack
*edit* since your on streetfire....
http://www.streetfire.net/video/camm...er_2289596.htm
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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: the 355 twin turbo iroc officially lives
it will take a few mins to encode then it will show up
that cam would work for a turbo setup, if u get real serious with the turbo setup u would have to swap to something with a 112/114 lsa down the road
since your on the topic of cams, and hopefully you dont mind me hijacking your thread a little....
are those durations at .050? reason i ask is i have a crane solid cam in my 3.4 660 with ~230* at .050 on a 110 lsa. kind of a lopey cam but still pulls decent vacuum. crane doesnt offer this grind anymore under the new ownership so i dont have the exact specs. lift is ~.500". could i put a decent turbo setup on there without swapping cams? thanks and sorry for the hijack
*edit* since your on streetfire....
http://www.streetfire.net/video/camm...er_2289596.htm
are those durations at .050? reason i ask is i have a crane solid cam in my 3.4 660 with ~230* at .050 on a 110 lsa. kind of a lopey cam but still pulls decent vacuum. crane doesnt offer this grind anymore under the new ownership so i dont have the exact specs. lift is ~.500". could i put a decent turbo setup on there without swapping cams? thanks and sorry for the hijack
*edit* since your on streetfire....
http://www.streetfire.net/video/camm...er_2289596.htm
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: the 355 twin turbo iroc officially lives
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
it will take a few mins to encode then it will show up...
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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: the 355 twin turbo iroc officially lives
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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: the 355 twin turbo iroc officially lives
rob any chance u still have any of the old videos of my v6 car, i got a new laptop and lost all the old videos i had
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Joined: Jul 2003
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Likes: 206
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
rob any chance u still have any of the old videos of my v6 car, i got a new laptop and lost all the old videos i had....
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by 34blazer
ill move this over to PM's so i dont keep jacking your thread lol.
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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
Joined: Jul 2003
Posts: 10,538
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
think u can throw them on youtube or streetfire for me so i can download them, thanks...
http://www.youtube.com/watch?v=LiDPG5J5Kqc
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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: the 355 twin turbo iroc officially lives
Don't even remember what year this was (08?), but we were tuning in the pits w/Paul....
http://www.youtube.com/watch?v=LiDPG5J5Kqc
http://www.youtube.com/watch?v=LiDPG5J5Kqc
edit i think that was back in 07
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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: the 355 twin turbo iroc officially lives
that was the day after we installed the megasquirt and i thought it was tunned lol,
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
that was the day after we installed the megasquirt and i thought it was tunned lol...
http://www.youtube.com/watch?v=6vJbNvcB1SE
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Actually, this was the last run of the night. Again, you let off of the gas because you heard something, while then finishing the night with a whopping 19 seconds lol... 
http://www.youtube.com/watch?v=VwXJxrphflo

http://www.youtube.com/watch?v=VwXJxrphflo
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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: the 355 twin turbo iroc officially lives
I think your right, I think it was '07. This was the reason why we were out back tuning in the pits that night, something happened down the track and you let off. This was just before the video above, same night...
http://www.youtube.com/watch?v=6vJbNvcB1SE
http://www.youtube.com/watch?v=6vJbNvcB1SE
that was also the original 200k mile 2.8 god that thing sounded like ****
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
that was also the original 200k mile 2.8 god that thing sounded like ****
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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: the 355 twin turbo iroc officially lives
lol the car always did do a mean burnout though
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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: the 355 twin turbo iroc officially lives
hey rob i grabed those videos if u come across anymore let me know and ill grab them
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Cool, I'm gonna pull them from youtube then. I have a few more video's lying around, just gotta pull them from the DVD's that they're on. Why are you considering the supercharger in the other thread....?
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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: the 355 twin turbo iroc officially lives
the supercharger is just to have, i basically have a second twin turbo kit ready to go, it was for my silverado but im going to leave the truck as it is, so if i can trade of the kit for a supercharger it would be nice to have laying around for the next f-body i buy, maybe even adopt the kit to a v6 car .p600b would actually work damn good on a 3.4 motor
Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
You know what would look good on your Iroc once she's painted blue, a set of polished GTA rims lol. These are the rears, but the rear tires are going on the fronts w/the deep dish, and a set of drag radials are going on the rears. You want them...? 

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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: the 355 twin turbo iroc officially lives
Damn you two are like roll models to me lol. Love that twin turbo tpi I hope one day i could build one like that.
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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: the 355 twin turbo iroc officially lives

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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: the 355 twin turbo iroc officially lives
feel free to send any extra money, turbo/superchargers,or wheels my way
. lol jk those are nice
. lol jk those are nice Joined: Jul 2003
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: the 355 twin turbo iroc officially lives
Originally Posted by project89
i alrewady bought rims fo rthe car











