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Topic: comp ratio
the last dive
From: sydney australia
Registered: Dec 2001
posted 04-30-2002 07:55 AM
does anybody think that 10.1comp is too low for a solid flat 294 248 @.050 560lift cam??
From: Lyons, IL, USA
Registered: May 99
posted 04-30-2002 09:37 AM
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From: Spencer, WV
Registered: Jan 2001
posted 04-30-2002 12:02 PM
It depends upon if you have a TRUE 10:1 compression. Be sure to take into account...
how far the pistons are down in the bore at TDC
cc's of the valve reliefs
cc's of the head gasket
truee cc of the combustion chamber
A set of '10 to 1' pistons does not necessarily give 10 to 1 compression.
One more thing, running on the 'low' side of the compression scale for a given cam, the low-end and midrange are what will suffer the most. This is especially important when using a cam that is a bit on the large side anyway... especially if it is to be used with an automatic.
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
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