302 Z-28 engine only

[rboyle]

Originally Posted by Dwight Southerland

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.

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.

[Adger Smith]

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

[randy wilson]

Originally Posted by Adger Smith

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

Will keep in touch.

[Greg Reimer 7376]

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.

[nhramnl]

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.

[Dwight Southerland]

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.

[jimmyparker]

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.

[Dana Fitzpatrick]

Originally Posted by jimmyparker

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.

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.

[Alan Nyhus]

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

[randy wilson]

Originally Posted by jimmyparker

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.

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.