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I didn't ask Jenkins about the cu in of the Pro Stock motor but that is a good question. He told me he used the CanAm block in his 1968 Camaro Pro Stock car that he won the first ever Pro Stock race with at Pomona 1970. He said the ZL1 block was "junk" (his word). After a few 8000rpm runs the HP would drop off due to compression sealing problems. He thought it was because the cylinders would "move" in the block. The ZL1 block worked OK in Corvette SCCA Road racing (1970s) where they redlined about 6500rpm. Jenkins said even with the Can Am block he would notice a HP drop so he hooked up a water heater and electric pump that kept the block at 180 deg. all weekend. [EMAIL PROTECTED] writes: << Did he tell you what the real cubes were on that year he used the can am engine? >> ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]