All right guys, its my understanding that the only differences between the 1987-1990 Camaro’s is they came in three option classes, IROC, Z-28, and RS. Furthermore, in 1991-1992 there were some minor interior/exterior changes.

The IROC’s weren’t anything to special, tuned port injection, different spring rates, bigger tires, bigger rims, bigger sway bars, the like, nothing that couldn’t/wouldn’t get replaced on any car I get, Z-28 were a step down, some came with carbs, but the basic options were still there (ie: 5 speed, and all other interior options that came on the IROC’s), And the RS was an anemic Camaro that had a 6 banger, here is where my question arises, what are the exact differences in the RS and the Z-28, I want to buy a Camaro and swap a used 1994 LT-1 with a T-56 six speed, so the engine part is not really that important. Did the RS’s come with different gauges? Did they come with a different rear-end Gears? I need to know specifics. I would really appreciate a lot of pictures with this one guys.

Now about the swap, would it really be feasible to do a 5.7L T-56 swap into a third gen that came w/ a little 6 banger?

 

Yes & no.
IF ya get the V-6 car for free, you're ahead.
I paid $300 for mine. Free.
Ya want a V-8, stay with a V-8. You win way way long time!
V-6 has a code in the VIN & that made me stay with a V-6 set up.
I'm not upset at all!!!
I love my 3.4 swap!
Besides teh swap is "smog leagal" as long as ya don't open your mouth, they'll never know. The VIN says V-6, it should be a V-6 to the smog guy.
NO, not a 4.3 V-6 NOR a 3.8 V-6, unless ya make a V-6 Turbo set up (like in the 1989 GTA!).
IN CA ya pay $300 for approval to get smogged, after ya swp the engines. I escaped that by keeping it 100% stock looking.
I win!
And pass CA smog EASY!

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

i didnt think they dropped the IROC-Z and started actually calling them Z28's untill 90 or 91(cant remember the exact year) but i remember reading they started calling them IROC-Z's begining with the third gens then dropped it in 90 or 91 to bring back the ol' Z28 nameplate, correct me if i'm wrong. Also i dont like it when people refer to my engine as "a little 6 banger"

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91 Blue RS with ASCD SS hood w/hood pins, Flowmaster 80 series, K&N, Bosch Platinum wires and plugs, rebuilt transmission with shift kit.

Soon to be added:
Z28 spoiler.
New paint.(black with orange stripes)
A 3.4L V6.(WOOHOO!!)

Official Kills:
80something Monte Carlo SS
New Civic
Ford Splash(Souped up somehow, he was chirpin every shift)
Late 90's Crustang
Early 90's Crustang(at the strip)
Older Eclipse(at the strip)
CRX(at the strip)

 

Better do some more research on this. The LT-1 is not your typical Chevy 350 Z28 like those found in the 3rd gens. I have an article somewhere that explains the differences and it would benefit you to know what they are before you attempt the swap.

 

You can swap in an LT1. They make painless wiring kits for it. There's quite a few people who have done it.

 

I believe by that year, the V6's still had lower gears than the V8's. The front springs are weaker, but guys have done the V6-to-V8 swap and kept their front springs. The V6 radiator is smaller. The V6 trans won't bolt to a v8, but you've got that covered; and of course you have to change out the whole wiring harness, but you knew that. There weren't any changes in structure.


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-Tom P (Hot rodded 1986 Firebird 2.8l)