Bore it

**wriedt1** · 05-08-2009, 05:32 PM

Does any one know how far out you can bore a 455 its at .030 right now. Can you go .060? It's a 70 block I don't know if the year matters any info would be great Thanks.

**2slow4u** · 05-08-2009, 09:46 PM

i and my dad have had several olds. i even had a blown 455 in a 72 prostreet cutlass that was in hot rod, car craft and was on espn inside dragracing with big daddy don gartlits. was his pick of the week. he signed the dash. its on the summit racing commercial. i dont no the marine motors though i no the 70 was the last of the good years. 71 they went to smog motors. easily bore to 60 over. i have a unbored 455 car 69 block sitting in my garage with steel crank and rods if u need.
i no its not a boat but a little eye candy for you.

**david martin** · 05-08-2009, 10:02 PM

you can bore .060 over with no problems.
David

**gatahiti** · 05-10-2009, 11:08 AM

this is a good thread where alot of people contributed to help me out.

http://forums.screamandfly.com/forum...d.php?t=131722

I have since collected a 69 or so block and C heads but i still havent built my engine. I keep that thread as a reference with alot of good advice. The bore clearance being one of them

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