building a 347 on a stock block?

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12-31-2007, 06:17 PM

#11

68CSTANG

3rd Gear Member

Join Date: Jun 2007

Location: Illinois

Posts: 816

RE: building a 347 on a stock block?

93 octane should be alright with 10:5 compression ratio. I wouldnt go any higher than that tho.

12-31-2007, 07:49 PM

#12

mjr46

D.R. THE PATHETIC DORK

Join Date: Jun 2007

Location: West Virginia

Posts: 30,863

RE: building a 347 on a stock block?

Quote:

ORIGINAL: 68CSTANG

93 octane should be alright with 10:5 compression ratio. I wouldnt go any higher than that tho.

I had 11 to 1 on my 306 with .200 dome pistons and I was fine..but to do that you'll need aluminum heads

01-01-2008, 04:22 PM

#13

P.S.I.cho

4th Gear Member

Join Date: Mar 2005

Location:

Posts: 1,123

RE: building a 347 on a stock block?

youll be fine with 93

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