GMpart number for ZLX heads
My question is what GM part number is used for the motion ZLX heads? The only open chamber heads that I knew of at that time were 074's which were ZL1 aluminum. Were these prototypes for the LS7 that was supposed to be offered in the 70 corvette?
Also did the 67 and 68 L88s have 12.5 to 1 closed chamber pistons, and a bigger cam but still used 392, 840 or 842al heads? Was the comp ratio and cam size, the difference between the L72, and the L88?
Always wondered why Yenko did'nt put at least a few L88s in something.
Any help on part numbers is appreciated.
Ken
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03-08-2002, 04:22 AM
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