MouseCamaro305

I've got a 1990 IROC Z with a TPI 305, l live in illinois, and have emissions once every 2 years l beleive, and l was wondering if l would be able to swap a 383 stroker
with a 4 bbl into my camaro and possibly get around emissions l also have some other questions:
a. will a non compuer controlled 383 stroker with a bbl be fairly compatible with the TH 700R4 speed transmission?
b. will anything be non-functional after the swap?
c. would I be better off swapping in an originally carbed car?
d. will l have a tough time with exhaust since its only single outlet?
e. will l pass emissions (thats the least of my worries though)


thanks very much

SUPER-SPORT-CHEVY

I would leave the tbi on when you drop a 383 in. Some people have problems with the ecm and some dont. My friend poped a stroker in an 89z28 tbi and just got a better fuel pump and jetchip that seemed to do the trick you could get a bigger tbi unit if you needed to. But this might be the only way to go to keep your emmisons "junk"!

MouseCamaro305

wouldnt l be able to completely do away with the ECM after the swap?

MouseCamaro305

wouldnt l be able to completely do away with the ECM after the swap?

SUPER-SPORT-CHEVY

No you would have to keep the ecm in order to pass emissons or so they say it just depends on how strict the emmision laws are in your state and how good of a carb tunner you are.
I know people that get away with no cc systems in La but they know thier stuff on tunning a carb. I would think its easyer to keep your tbi and buy a 190$ chip and if you need a fuel pump buy one later. you could go 3inch exhaust and a high flow cat back system as far as exhaust. For the 700r4 put a big cooler on it and get a vett servo. Is this going to be your daily driver? If it is i would keep the tpi.

five7kid

iTrader: (14)

A carb isn't going to cut it for a '90 model; CC or non-CC, doesn't matter. The only certified inductions systems that year were TBI and TPI. The difference is obvious, and you would not pass visual.

Technically, the 383 is not certified, but if it is under a certified induction system, they aren't going to be able to tell the difference. Use certified aftermarket parts is you change anything, like intake, runners, or TB.

You should have 1-3/4" primary headers and 3" y-pipe to muffler. Either a single 3" outlet or dual 2-1/2".

Use at least 22lb injectors, adjustable fuel pressure regulator, cat & AIR, probably a custom chip; if everything else is in good shape, you should have a good running package that can easily pass emissions.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

MouseCamaro305

like l said, emissions is the least of my worries, l can become exempt fairly easily, and in the state of illinois we dont have a visual inspection, and the emissions arent extremely strict, but l still doubt that l'd be able to pass emissions with a carb'd 383 but like l said l have no problems becoming exempt from emissions, and fuel injection, in my opinion is too much money and work when compared to a carburetor.

The ODB

go to a carb then.
did you have any particular question I could answer?

ODB

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*I do custom performance mods on Edlebrock Performer carburetors (dualplane intake mods in the works),
White 1986 Irocz, 305 with iron #416 heads,
383 with aluminum TFS heads,
Edlebrock Performer-RPM intake and Performer #1407 carburetor, +110hp shot of crack, 700R-4 tranny, Vigilante 2400 lockup converter, 3.25:1 Ford 9" rear, Mcreary Road-Stars, SLP-stainless 1.75" shortie headers & Y-pipe, single 3" Borla exhaust, Linginfelter-TPI camshaft part number 74216 pulls 17" vacuum solid. Cam specs 213/219 @.050 114-LSA, sometimes advertised at 216/219 @.050 112-LSA .462/.470 lift @1.5:1 ratio. Using Harland Sharp 1.65:1 roller rockers. MSD-6AL, billet distributor, multi-retard, blaster-3 coil, and RPM switch. SouthSide machine subframe connectors, SSM lift-bars, Moroso 4" underdrive crank pulley.

N/A runs 10.9 @124,
Crack-runs 10.3 @135
haven't run at track since Oct-99
* vizit miy homepayge * http://www.geocities.com/trailerparkpage/

The ODB

oh, you will need to redo your fuel system for about $60
and you might need a TV cable and bracket.
Carter/Edlebrock carbs are very easy to connect the TV cable to.

MouseCamaro305

yeah, l just need to know if lm going to have to change any parts of the driveline, and if its going to be compatible with the TH 700 R4 thats in there, l heard a lot of the 700 R4s are computer controlled or something like that lm not sure if its true or not, but l just want to be sure, and will there be anything else l would have to worry about as far as computers? should l just basically pull out all the computer controlls on the car?

thanks a lot

The ODB

yep you can pull all that out.
Only the newer 700R's are computer controlled... just don't get one of those.

a 383 is the same size as a 305, so there is no problems with it fitting the same way.

Big454blockchevy

MouseCamaro305 you will be more than happy with your carbed 383. It's alot simpler and less expensive. I myself went with a 750 HOlley v.s.

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Big 454 72 Chevy Nova
383 86 Camaro Z28
10.5:1compression 186 casting Heads,234dur.488lift exh&int,Edelbrock performer intake, Holley750 vac.sec 400 crank,flat top pistons,edelbrock valve springs and lifters,tranny shift kit,kickdown kit and tranny oil cooler. Will install 3.73's later on and might go with a more aggresive cam.