Reply to "Nostalgia - 351C 4V Street Motors in the 1970s"

DJJSC (Guest)

"the 1970 motor was rated at 11.0:1 compression ratio even though its compression was actually 10.0:1, the 1971 motor was rated at 10.7:1 compression ratio even though its compression was actually 9.7:1"

I have long been a Cleveland fan and won't take extreme issue w/ your statement, but I have difficulty believing it. As part of a major tune-up my stone-stock 1970 Mustang M code registered a 185-205 PSI compression check in the mid 70s w/ 60,000 miles on the ODO. The mechanics words to me were; "Doug, that engine will run on diesel!" The highest compression I had seen to that date was in the 170-180 range on a factory Hi Perf SBC rated @ 10-10.5 to 1. FYI, that Mustang always had a signature 'rattle' on start up, even w/ 102 octane SuperShell. To me it was a satisfying sound, like all's right w/ the Cleve. I miss that...........

6/18/1211:42 AM

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