Re: ZL-1 aluminum 427
I believe all ZL-1 were cast in 69, I dont know about Yenko. These blocks were sold thru 1973. Does your block have a Winters mark on the front, or a Yenko mark?
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1968 Z/28 34,000 mile, born with engine and trans, Shipper, California car, Fathom Blue, deluxe interior, M21, 3.55 Posi
1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
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