Getting the cut-out done, and in the car.




And here is a pic of Paul working his magic with a grinder.


AIR Pump, OFF!


Intake Painted, and ready to go on.


Comparison of stock cam, to the UD cam.


Engine all apart.


Cam In!

 

New Timing Cover on.


Test Fitting the Intake.


WaterPump, and TBI unit on, we are getting there.


Modified throttle bracket. (Paul goes at it again with the grinder)


Filling her up with oil.


All done, and just about ready for the COWS3 !!!!


And here is a pic Paul (Twilightoptics) and Myself, under the hood. (I am the skinny guy there)

 

You're gonna love that single plane!

 

so far i do, the throttle response is great, it has NO lack of bottom end. I think i may be going static on teh injectors, it starts to misfire, and lacks any power above 4k, that is one of the gramlins i am still chasing down.

 

Looks good! How did you account/accomadate for the different timing tab locations? Stock is at 12 O'clock where your new one is at 2 O'clock.

 

i put the new timing tab on with the stock cover, and marked the balancer accordingly. although due to the 2piece cover having leaking issues, the stock cover is back on, along with the stock timing tab.

 

Been there, done that.

Sounds like you are on the right track.

I would swear my truck is as responsive, if not more, with the single plane.

I had to add a bunch of pumpshot with the single plane.

 

luckily i had already tuned this cam with the stock intake, so i was close initialy, i added some more timing at lower RPMs and some pump shot, i think i still need a hair more pump shot. Unfortinaly i cannot log right now, (see my post in the DIY-Board ) and i have a couple of what seem like electrical issues to chase down.

 

What intake is that? PN?
Stock TB?

 

The intake is a Weiand 7525, i think that isn't available anymore, AFAIK it is the only singleplane that has EGR on it.

 

So you had that whole thing apart and you didn't put those 416's on yet! Or are you just looking for an exuse to tear her down again. Hopefully you can get some good times with your tuning skilss to shut up a lot of the TBI haters on this board. Do us proud. Mine won't be track ready for a bit and chuck needs to not be lazy and tune his potential 13 sec 305 TBI car.

 

On that note, I took my truck to the track Saturday.

Not the kind of improvements I wanted, but improvements, none the less.

New best of 13.34 @ 99.62, 1.83 60 ft, 8.43 in the 1/8.

I think my low (7.9) CR is killing me.

Ran out of track time, as usual.

Need more pumpshot and pull some timing out up top.

Guess I should just bite the bullet and ditch my glass bedcover, bedliner, and stock steelies.

 

Shifty,

with gas hanging out at about 2.59/gal for 87 here in Oregon, and aftering being hit with a HUGE retro-active local tax, i really just didn't have the money to get all the machine work done to get the heads on. I do plan to tear her apart again anyway, when i finaly do put the heads on, an even bigger cam is going in.

 

Yea I figured. I was just giving you a hard time. Are you having tuning problems with this cam yet? Or have you nbot really played with it. I think you are going to be close to the limits of the stock injectors.

 

got some tunign done, it is ruffed in.

luckily that cam was in the car at one point, with the stock intake. so i had a good starting point, since i had already tunned it once.

my aldlcable crapped out on my, and my new on isn't behaving (see my thread in the DIY-board) i used a scanner, and and checked blms, and had a friend yell out o2 values as i was driving down the road, watching the tach (yeah i know, real accurate way to tune) (side note: DO NOT DO THIS) its pretty close after 4 or 5 chips now, much better than any mail order could probably ever be.

it doesn't seem like anything super special in the mid-low RPMs but let me say that hanging 3rd gear out til about 6k is darn impresive. actualy it felt like it was pulling the hardest yet as i hit about 130.

 

Imagine what it will feel like when you get those heads on her. Than you will pull past 6k. It is a great feeling to be in a heads and cammed and tuned Lo3.

 

yeah, heads, 670 TB, and a 150shot

damn you oregone, damn you and your taxes.

 

with gas hanging out at about 2.59/gal for 87 here in Oregon...

Ouch! I might quit bitching at 1.89 a gallon here (today anyway)

Are you going to have to pass a smog test with this Dewey?

 

ummmmm .... those first couple of pics look suspiciously like an illegal exhaust modification to me ........

 

No thats just where the muffler bearing goes. Sorry couldn't resist. Dewey should have some killer times with his tuning skills and that set-up. I can't wait.

 

Hey John, who makes that TBI adapter?

 

I bet the test guys down here in AZ would actually believe you, too! I'm so torn on doing mods like this, cuz of the rarity of my car. I want to, but then I just wanna get a junker and phunk with that instead. It looks like SOO much fun though. Need to find a friend that knows something about chip work...

Ohh, and "Pump Shot" is new terminoligy for me, please explain...

Bruce (90RS305)

 

The ECM controls the pumpshot, I've taken it to be the computer reciprocal of an accelerator pump.

It's called Accelerator Enrichment. Here's an explanation kind of... Accel Enrich

 

Holley. they make 2 adaptors, one for spread-bore, and one for square-bore.

When you open the throttle from closed to open, there is a sudden rush of air. the computer dumps in fuel for a moment when this happens, to keep you from going lean all of the sudden. the computer bases it off of 2 factors, change is TPS and change in MAP.

 

rare it might be in total production numbers.... collector's car... i dont think so... so mod away...

its kinda like, they didnt make too many ugly green 69 fastback mustangs either, and even though it's rarish... its not really a sought after collectors car, more of a classic driver. (watch barret jackson car finders anyone?) - or like old brown corvettes.... paint it and it still worth more painted than bone stock and brown. MOD IT! - Buy a prestine 87 iroc convertible when your loaded and 55 years old and it costs over 100k.

 

Ahving a 90 myself I would have to encourage you to mod away man. I got my car with 21,000 miles on it and was hesitant to do anythign to it. I eventually cancelled my full coverage insurance on it because even if it were totalled they would have only gave me 1600 bucks for it. Unfortunatly these cars have almost no value but whats inside the owners heart. Plus, just keep all the stock parts if you ever want to go back.

 

I know, you guys are totally right, I just don't like to think about it that way Its really a money question too. Sucks being flat broke Then again, I DO kinda like being one of the fastest stock 305TBI's here...

Bruce (90RS305)

 

thirdgens are worthless and will probably always be

there is nothing special about them, nothing all that ground breaking about their design or performance. Nothing like a 69 camaro Z28 which was the first of its kind

I only see thirdgens getting cheaper and cheaper and leveling off at around the price they would be worth as scrap.

The people who would pay money for a well kept car years down the road are the ones that are young and lust for them right now. Tell me how many kids you know that think thirdgens are cool or fast.

Most everyone on earth thinks these cars are a POS. Ask a few people without revealing that you own one.

 

And thank *** for that! With the way I drive a nice car wouldnt stay very nice, or valuable for long.

 

I love it! The more people think that, the more thirdgens will be around for us to buy & build

 

The only rare 3rdgens are the TTAs and the one-off cars that GM shows with the Camaro Heritage tour. I saw some of those bad mother f'ers a few years back. That one with the LT5 is SWEEEEEEEEEET (except for the white, lavender, and lime green paint!)

 

hey dewey
how hard was it to get rid of all your ac stuff on your camaro
I have a 91 rs and am about to put headers on and was thinking about getting rid of that suff so i could have more room. The ac doesn't work anyways.

 

John I've got a couple of questions also. Sorry if I've missed this somewhere.

But...

What rear gear ratio are you running?

and what are the spec's of your cam?


Thanks DM

 

Is it pulling stronger with the single plane? When do you think you'll have some more track times?

 

BronYrAu.......looks like you will have a nice set-up.

'91 RS Convertible 305 TBI/5-speed
3.42 gears with '02 SS Posi
Open Element
Flowmaster 80 Series

Sitting around waiting to be put in:
--------------------------------------------
L98 Longblock
Holley 300-66 TBI Intake
Hooker headers
Catco cat

What cam are you going to use?

DM

 

Well, I've had the engine in the garage on a stand for about a year. So right now I just want to get it into the car, so I'll keep it stock for now since its an 89 block and the cam is decent ( Lift .415: .430 Dur: 207 213) one of the biggest stock.

I really wanted to go with a ZZ4 cam but I haven't gotten into tuning the chip enough yet to want to tackle all that at once. So I'll probably swap a cam in later down the line.

 

BronYrAur
You sound like me about stretching projects out for one reason or another.

Yep you're correct about that cam.

Some 1.6's would pick up the lift to 442/458.

And if you are interested in a ZZ4 cam www.Salleechevrolet.com has the new takeouts for $95 plus shipping.

Tuning the chip. Hmm...seem to remember making the mistake of not starting to do that until I swapped in a Vortec 350 and it ran like crap. Turns out part of my problem was the pos holley 670 injectors I tried but you will have to tune none the less.

 

DM91RS
Thanks for the link, that's the cheapest I've seen that cam.

As for the 1.6's, I've been looking into them for a while and will most likely get some. Should also be getting a Prominator very soon.

 

Sounds familiar. Mine is a Holley Street Dominator. It looks almost identical in design to yours, and it has EGR. The Holley Street Dominator is still sold new, but it is now a dual plane.

 

Warning, exhaust cut out my result in a permanent grin and loss of hearing. I can't get my girl friend to cap her's off. She just loves going down main street and setting off car alarms. She also won the loud exhaust competition last year at the local car show. It registered in at 121 DB.

 

Ok, i see alot of questions here. I was out of town at a Cascade Crew gathering this weekend.

DM --
1) specs on the cam 272/282 206/216 .447 .447 112
it is degreed in, the cam card has a 106 centerline, we got it on a 104 (as close as we could get with 4* keyways, and i was too lazy to do bushings.)
2) i Have 3.42's with and eaton posi, its in a 5speed car, with a superlight flywheel, and LS1 alum. driveshaft.

And yes, it pulls pretty good up in the RPMs, I haven't had much time at all to tune, i am sure is i work the timing tables some more, the low end grunt will be there, but even with that huge single plane plenum, throttle response is great. and it moves right along. not sure when i will have track times, it will depend on weather and my time. i will try to get them as soon as i get a better tune, and get a chance to go to the track.

Last but not least.

The AC is easy to take out, just start ripping things out. you need a non-AC heaterbox and fan, unless you want to modify yours, or build your own box. other than that, just take it all out. and get the AC delete pully.

 

Iam 18 and I have loved the 3g Camaros ever since i could remeber.. Iam actually on my second one(totalled 91 Rs..which got me able to buy a 92 Rs 25 year ann). So saying that kids dont think there cool or fast isnt really true.

 

so your saying because you like them it is indicative of a trend?

 

think on the bright side Pablo, the more 18 year olds that total 3g's, the more chance there is that ours will be of value.

BTW, does anyone remeber how many millions of chevelles they build, and how people thought they would never be worth anything.

 

Exactly!!

 

Well it wasnt my fault lady ran a red light so not really. Also there are alot more teenagers that own and like 3rd gen then you think. I was just using myself as an example.. And iam just loving the smartass responses Iam getting just for showing some insite, considering not all teenagers are into the whole import craze. Thanks

 

(Haven't been online this week due to probs so here goes...)

You're welcome.........I also got some 1.6 Comp Pro Mag rollers there for a very good price . $226 if I can remember. They also had the roller tipped ones at a good price. And the GM screw in studs were like $15. (The ones that are not made to run guide plates)

The Prominator looks pretty cool.

 

Kool.....bet you're ready to get the heads completed!

 

yes, when the heads go on, i am bumping up to a larger cam, and putting the roller rockers on.

the bigger cam will be MUCH more aggressive.

276/284 210/218 .510 .510 112

that should really let the LO3 breather. I will also be putting a 670 Holley unit on, (does it amaze anyone else that i am still running the stocker )

 

Not really. Chuck! uses the stock TBI unit with his vortec heads and cam and performer RPM intake (2000 up rpm band). You start to feel the limits of the injectors and unit itself at 6300 rpm The 454 unit should go on soon pending he stops being lazy.