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Discussion Starter · #1 ·
As far as I know:

Z06 - Corvette
Z07 - (some unofficial corvette thing)
Z22 - Cavalier
Z24 - Cavalier
Z26 - Beretta
Z28 - Camaro
Z34 - Lumina
Z?? - Monte Carlo
Z71 - Off-road package (pickups)

Now is there any pattern Chevy is using or has used for it's "Z models" - and am i missing any others?
 

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The Monte Carlo had a Z34 version too when it returned in 1995.

Z07- The RPO option code for the "Gymkahana Suspension" on 1970's Corvettes.

There also was

ZL1-Killer all aluminum 427

I have never hear of a Cavalier Z22 though? Z24 yes.

Z51-The current option code for the performance suspension on the Corvette since 1984.
 

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ZQ8>>sport suspension package for colorado
Z88>> I think camaro? or corvette package...I think...not too sure
 

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Z88 was 4 the Vette
 

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The Z series is just a RPO code. The Z28 really started the whole name thing. To understand the history, you must first understand what the Z28 was.
Back in 67, for Chevy to put the Camaro into SCCA Trans Am racing, they had to have an X amount of cars for homologation(sp?) as the cars were based of production models. To race, teh engine displacement had to be under 305 cubic inches, that ment no 327. So Chevy took the 327 block, and added the 283's crank shaft to it and got the Small Block 302. The Z28 RPO option code got you the very rare 302 ci small block chevy. It was a high reving engine for its day. And it made great power. The first Z28's have no Z28 badges untill the RPO code caught on with performance minded enthusiast. This is what brought the Z28 to its fame all through out its 35 years. The name died 2 times in that stretch. How did Z28 come about? Well, the Z28 package was the step up from the Z27 package, which was the SS trim of the Camaro. The 302 was rated at 290hp, below the SS's 350 raiting of 295hp, but the 302 was said to keep up with 396 models in the 1/4.
After 69, SCCA opend displacement of the engines, and the famous and original LT-1 350ci, "360" hp engine was an option, and the 302 faded into Chevy history. The LT-1 in the Corvette was teh same as in the Camaro. Solid roller cam like in the 302 made great power in a world of increasing insurance rates on big block cars. From there it was a gradual decline in HP. 73 was the last year of the SS, and the Z28 would be the top model for some time. In 75, the Z28 model went away due to total lack of interest in sports car. But by late 77, the Z28 was back, but with a very weak powertrain with a 185hp 350 in the Z. Not untill about 85 when TPI came around to raise the hp of the new smog friendly 305 go to 215hp. The Iroc usherd in a new model, and in 87 could be equiped with the B2L/L98 350 TPI that made 225. In 88, the Z28 left again in favor for IROC. Chevy dropped the IROC moniker due to that Chevy was no longer going to participate in IROC. 91 was the first year of the Z28 return, and with it came a dual cat exhaust, 245hp 350 B2L/L98.
In 93, the 4th gens brought in the 275hp LT1, and power and dominance was returned to the Camaro. In 97, the SS model comes back as a speical package done by SLP. By 98, the LS1 engine put the Camaro head and shoulders above everyone else in performance. We all know the rest of the story.

Also, the 350 cubic inch engine was made strictly to debute in the Camaro in 67. It was the only 67 Chevy to have the 350. The 350 was made by taking the 327 block, and adding a larger 3.48 inch stroke crank. Later on, as it became more popular, it found its way into everything with a bowtie, and then eventualy into almost every GM car with a high performance V8.

Just a little history from your friend Big Al. :type:
 

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Don't forget that the Z06 and ZR1 were originally from 60's vettes.

Something I'v noticed, most Pontiacs...at least the Bird uses W's instead of Z's.

Oh, also MTI is who does the Z07, its a 422 or 427 CI LS1 that puts out some good numbers. Not worth the price IMO...but then again I don't like the C5, Z06, or the LS1 so *shrug*.
 
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