302 Z-28 engine only
 

I may have a barn find. Says 302 on the air cleaner that was left on the engine after they robbed the carburetor. The intake is correct, and looks legit. Need to get inside of it, and take a peek. What’s one worth if I completely rebuild it to exact specs?

Re: 302 Z-28 engine only
 

If you can find the Z28 that it came out of, it'll be worth big bucks.
Other than that, if it's a 69, it's an 010 block with a 3" stroke crank and decent heads. JMO

Re: 302 Z-28 engine only
 

Randy,
Call or email Jerry:

http://z28camaro.com/

Re: 302 Z-28 engine only
 

Will do. The thing is I run a small construction company, and one of my workers found this in his deceased granpa’s barn, and I want to get it to the shop and make sure it’s real. May be a bit. His grandpa bought the car new, and they had it crushed several years ago. I know. Sad deal. It started with him telling me on the way home the other day that he never knew Chevy made a 302. We started talking, and he said I power washed it and took pictures. And sure enough, it looks legit. He’s bringing it down when we get caught up.

Re: 302 Z-28 engine only
 

Depends on which year. The casting numbers on the block, heads and intake will tell a lot. The '67 is the rarest; 602 were built. and complete engines were not offered through the parts network.

Re: 302 Z-28 engine only
 

It came out of a 69. I’ll look up the numbers when I get it down here.

Re: 302 Z-28 engine only
 

Randy,before you do anything, call Jerry and talk with him regarding the stamp pad on the block.
He'll tell you what the code is for the 69 Z28 engine,and most importantly,what not to do to when cleaning it up to see it clearly.

Re: 302 Z-28 engine only
 

Will do. I promise. I’ve never actually been inside an original one.

Re: 302 Z-28 engine only
 

Randy… Does it have oil filler tube or not? Does it have bolt hole heads or not? Finned valve covers or stamped steel? MB

Re: 302 Z-28 engine only
 

I know it has finned valve covers, I’ll look closer at the pictures tomorrow when he comes in. I do know it has straight plug heads. I spotted that.

Re: 302 Z-28 engine only
 

I have one of the 1967 302's if anyone is interested, it has been bored though .060 over as it was a race engine for some of it's life.
Thanks.

Re: 302 Z-28 engine only
 

I have the original Carb body off my 69 Z 28.
Depending on the production date of your block it might be close.

Re: 302 Z-28 engine only
 

Will keep in touch.

Re: 302 Z-28 engine only
 

Seems to me, the block stamping suffix on the 69 302 ended in DZ. That was for the 302 cubic inch 290 horsepower Camaro only power plant. Otherwise, the block was a conventional large journal 4 inch bore 4 bolt main 010-020 010 casting. It didn't matter if the car had the factory headers and the cross ram with the two big Holleys, it was a DZ block. That was an accessory that was non-factory installed and came in the trunk for owner installation. Wonder how many disappeared either in transit or snagged by dealer new car get ready personnel or by crooked service managers? It would have been fun to order the car with that carb and intake set up just to have it for later use even if the owner had no intentions of actually installing it.

Re: 302 Z-28 engine only
 

Everything Greg says is correct. Some additional information: the shipped- in-the-trunk headers were made for Chevrolet by Stahl. The cross-ram setup was essentially un-drivable on the street. While extremely cool-looking, the setup was genuinely intended for road-racing and over-fueled the engine so terribly at anything up to about 4000 RPM that they were miserable to drive. You ended up with about a 2-second blast of acceleration in each gear, because the engine wouldn't clean up until it reached 4000 or more and then it would pull up to 7000 almost instantaneously. The production blocks in '69 were stamped DZ; the '69 engines had no oil fill tube (you added oil through the valve cover); they had finned aluminum valve covers with a crossed-flags emblem on one cover, "long-reach" water pumps, and crank pulleys, and deep-groove pulleys.

Re: 302 Z-28 engine only
 

By 1969, the cross ram and headers were over the counter items; they did not come with the cars from the assembly line. In 1967, SCCA's "homolgation" rules dictated that such parts had to be part of the car's "equipment", but by 1969, they had relaxed a lot of those extreme rules. In 1967, you could order a Camaro with the fresh air induction system installed or as an accessory. You could also order headers that were "installed" in the back seat. If you ordered the fresh air induction as an accessory, it was "installed" in the trunk. You could also order a 1967 Camaro with no sound deadener and no heater. The cross ram was not released until sometime in the 1968 production year, after SCCA opened up the availability rules. By 1969 however due to SCCA lifting the rules, Fords had the inline Autolite carburetor parts for the Boss 302 and AMC had a cross ram 2x4 manifold and headers also.

Re: 302 Z-28 engine only
 

I seem to remember that some if not all 69 Z-28 blocks had the serial number of the car stamped on the block above the oil filter boss.

Re: 302 Z-28 engine only
 

Correct.The Norwood builds switched from the engine pad to the area above the oil filter boss in December of 1968.The LA builds were in either places.The oil filter area is sometimes hard to make out.

Re: 302 Z-28 engine only
 

The Chevrolet in-the-trunk headers I've seen were made by Kustom Headers in Flint, Michigan. -Al

Re: 302 Z-28 engine only
 

I’ll look when I get it down to the shop. As soon as we get this small job done in KC he’s bringing it down.

Re: 302 Z-28 engine only
 

Those large journal blocks should have 2482 on the center caps.

Re: 302 Z-28 engine only
 

Al - Not questioning what you state, but I've heard for YEARS that because of the connections between GM and guys like Smokey Yunick, Truppi-Kling, Jere Stahl, etc., the headers were made by Stahl. How did you learn that they were made in Flint? That's new news and very interesting.

Re: 302 Z-28 engine only
 

Correct.

Re: 302 Z-28 engine only
 

I hear 'ya. :) There a good chance that Bill Thomas Race Cars, Douglas as well as Stahl also made some of the headers for Chevrolet. When I worked in the parts dept. of our local Chevy dealer in 1972, there was a set of these GM part numbered Z-28 headers stuck way up on top of one of the parts bins. They were wired together along with a heavy manilla envelope that contained the header bolts, gaskets, and two sets of instructions....one from Chevrolet and the other from Kustom Headers.

Here's an link that provides some interesting history.

http://www.camaros.org/forum/index.php?topic=8001.0

Re: 302 Z-28 engine only
 

The fresh air induction system you speak of. Are you talking about the cowl induction air cleaner/hood, or the wrap around fresh air sheet metal ductwork that runs over into where the heater used to be( like on Wenzel's car) ? I always wondered if that was a factory item or not ...

Re: 302 Z-28 engine only
 

Wenzel's car is a 67. The wrap around air breather was an option, 7,8 & 9, dealer installed. GM sent a sketch to layout the location to cut the cowl / firewall. 7 & 8's only came with a flat hood.

Re: 302 Z-28 engine only
 

I have a 69' built in Norwood,Ohio with the L89 option. But the aluminum heads on it are the 074 like they put on the ZL1 Camaro's.


Factory Muscle!