383 stroker what compression ratio for pump gas

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Oct 28, 2007 | 10:04 AM

wiseman9986

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From: moline, il

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383 stroker what compression ratio for pump gas

im building a 383 stroker with 6" rods with this kit http://cgi.ebay.com/ebaymotors/ws/eB...155158473&rd=1
and i want to run on pump what would be the best compression ratio im going to be using edelebrock pro flo 3500 injection and im trying to decide on a trick flow head combo

Oct 28, 2007 | 10:22 AM

SpitotRs305

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Re: 383 stroker what compression ratio for pump gas

10.5:1 for the street 11:1 if it will never see the street

Oct 28, 2007 | 12:51 PM

lbman0007

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From: Baker, Louisiana

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Re: 383 stroker what compression ratio for pump gas

what type of octane fuel do you need for 11:6.1 ?

Oct 28, 2007 | 12:59 PM

AlkyIROC

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Re: 383 stroker what compression ratio for pump gas

As much as needed to eliminate detonation under load. There is no magic number based on a compression ratio since each engine is different.

Some engines can run 92 octane on 12:1, some engines can only do it at 10:1.

Oct 28, 2007 | 02:36 PM

wiseman9986

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From: moline, il

Car: 82 z28

Engine: 350

Transmission: TH350

Axle/Gears: 10 bolt 3.73

Re: 383 stroker what compression ratio for pump gas

so would it be best to go for 10.2:1 or 9.6:1 for this it will be a daily driver i dont want to go higher than 93 octane but i dont want any chance of detonation

Oct 28, 2007 | 02:41 PM

ryan91rs

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Re: 383 stroker what compression ratio for pump gas

9.6:1 is better. the lower the compression usually makes it burn lower octane. best bet it to ask to company you got the kit from or the shop doing it for you.