compression ratio-351C

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Nov 7, 2003 | 10:20 PM

78ford100

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From: Western IL

compression ratio-351C

Can anyone tell me the compression ratio of a 71 351C with 2bbl open chamber heads?

Nov 7, 2003 | 11:30 PM

bubbaf250

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Ford advertised it as 9.2:1.

Nov 8, 2003 | 06:40 PM

78ford100

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From: Western IL

by any chance would you know the cam specs too?

Nov 9, 2003 | 11:32 AM

user 478546

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Motors Shop Manual says the lift for that year's 2V is .407". Didn't see any duration numbers. Lift for the 4V same year was .427".

Steve

Nov 9, 2003 | 09:32 PM

bubbaf250

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Part #D0AE-A 351C 2V ('70-'74)
Total duration 258/266
Duration @ 0.050" 192/198
Lobe lift 0.235/0.235
Gross lift 0.406/0.406
Lobe sep. 107.5
Intake lobe CL 109.5
Intake valve timing (open/close) 19.5BTC/58.5ABC
Exhaust valve timing (open/close) 58.5BBC/27.5ATC