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03-10-2009, 03:42 PM
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what gas will I have to run
ok so im buildign a 496
454 block 60 over 4.250 eagle crank 781s ports with larger valves airgap intake im thinkin of this cam and it calls for 9.5-1 comp\ comp XR274R solid roller cam 639/649 lift 274/282 dur 110 lobe seperationg with 9.5-1 will i have to run reguler mid or premium 
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03-10-2009, 03:49 PM
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Hi,
I would try 92, and go from there, no ping, try next grade lower. Rich
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03-10-2009, 09:28 PM
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What piston to head clearance (squish) will you use?
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03-11-2009, 03:05 AM
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Quote:
Last edited by 454cutlass86; 03-11-2009 at 01:23 PM.
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