What should compression be on trail ported 400,s

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02-16-2004, 06:17 PM

stockbomb

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What should compression be on trail ported 400,s

I have a 2000 Explorer 400 with a bubba ported cylinder, stock bore and was wondering how high the compression reading should be.

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02-17-2004, 02:41 AM

modquad

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What should compression be on trail ported 400,s

Been soooo long since I handled a stock motor. I'll check in the shop for the specs in the morning.

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02-17-2004, 06:39 AM

POLARISFREAK

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What should compression be on trail ported 400,s

Should be around 145-150psi!

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02-19-2004, 06:41 PM

stockbomb

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What should compression be on trail ported 400,s

I checked the compression and its at 130 psi, I had the head cut .020 but he took that off the band and the squish, should I have more taken off the band only?

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02-21-2004, 07:18 PM

stockbomb

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What should compression be on trail ported 400,s

i'M LOOKIN FOR SOME HELP HERE GUYS.

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