Hey guys,

I'm curious, is there any difference at all between a COMPLETE CFI system from a 1983 Vette, and a complete CFI system for say, a 1983 Firebird?

What I mean is, are their computers chipped differently? The 83 Vette obviously has a 350 in it. Does the computer set-up and the TBI units provide MORE fuel for the 350 than the same set-up does for the F-bodies 305?

The reason I'm asking is because I'm getting everything I need to build myself a built up 82 CFI TransAm, and I get get either a 305 setup for really cheap, or 350 83 vette set-up for not AS cheap (but still cheap).

I want to have everything ready so that when I go out and find an 82 ttop CFI TransAm that I can fix up, I'll already have the motor and injection system done.

I know, you guys probably think I'm crazy, but I really want an original CFI TransAm (loaded). Most of those 82 T/As have been converted over to carburetor and then they lose the functional Cowl Induction set-up because the rednecks just tear all that crap off.

With a built 350 CFI set-up, IE: 83 Vette CompuCam, etc.. I'm expecting mid 14s in an 82 f-body.

Sound reasonable?


Thanks,

 

No 83 vette , either 82 or 84 and if I am not mistaken there are nonir differences in the later manifolds , but they all have the smae crappy flow.

 

The 83 vette as far as I know was just a continuation of the 82 model year.. extended until they could release the new Vette. So basically yeah, they're the same thing.

But I find it hard to believe that both CFI setups, regardless of whether or not they are for a 350 or 305... put out the exact same amount of fuel.

Wouldn't one of them have specific injectors and be chipped for a 350 as apposed to one for a 305?

 

Trust me , there was no 83 Vette available for the public , there were two produced , one is at the vette museum and the other is long gone. You dont have to take my word for it , call your local GM dealer parts department and ask for a part for it.

 

http://www.corvettemagazine.com/2000...ry/83/83p1.asp

 

I don't know whether there was any difference at all in the chip programming; after all, one of the reasons those things were so dog-slow (in addition to the pencil-sized 2-foot-long intake runners) was the extremely crude state of the art in computer control at the time. The 350 ones did have different injectors though IIRC. Seems to me like the 305s got 2 of the same injector that came on some 4-cyl of about 2.5 liters, which is why they ran so much like a Citation, only twice as much of it; the 350s would have needed to borrow the ones from a somewhat larger 4-cyl to come out right.

Evil is right; there were no "83" Vettes produced. There were a few late 82 production sold during the 83 model year to people who just had to have a new Vette right this minute, and I seem to recall some sort of a furor among purchasers of them who felt after the fact like they had been ripped off, by being forced to pay current price for a last-year's car. Some states may have gone so far as to allow them to be titled as 83s for valuation purposes. With those cars in so little demand for obvious reasons, namely their extremely poor performance (far below a 305, the L69) and long-term reliability, I don't think anybody really cares much any more though. From what I've seen they're even less popular than the late 70s 180 HP 350 4-barrel cars, which were slug-slow too, since they're alot harder to remedy the poor performance than a carb car.

 

That hits the nail right on the head. We've got a 79 (dog slow 350 4bbl). There's NOTHING wrong with those cars another motor wont' fix