02-15-2005, 04:14 AM
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CC Member
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Join Date: Jan 2004
Location: Leicester,
UK
Cobra Make, Engine: Metaline 1969 Ford 390 bored to 402ci
Posts: 89
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Not Ranked
Quote:
Originally posted by elgecko
.060" max, even then you should sonic test the wall thickness.
I went with .040" with my 390.
Dave
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Depends on the age of the block. IE early 60s can't take it but later ones can. Mine is at +60. Obviously only do enough to clean it as +60 pistons are harder to get hold of than +40.
Remember, +80 is actually a 406 bore  (Although I've not seen anyone offereing 406 pistons)
Paul |
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