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Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
460 compression ratio

460 compression ratio

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Old

Sep 30, 2007 | 07:30 PM

#1

evam350

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460 compression ratio

Does anyone know what the compression ratio would be on a 1989 460 with a carb set up using D3VE heads??

Would premimum fuel be required for this set up?

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Old

Sep 30, 2007 | 07:31 PM

#2

monsterbaby

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From: iowa

switching to the D3VE carbed heads wouldn't raise your comp ratio so no you wouldn't need premium fuel with it

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Old

Sep 30, 2007 | 07:44 PM

#3

evam350

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Ok well my original engine blew up (I think it was about an 85) so I picked up this 89 engine to use with my D3VE heads and I noticed the pistons weren't dished as much so I thought my compression ratio but higher than what it was with my old block

I didn't know if the efi heads would have had bigger combustion chambers or not to make up for it

Thanks

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