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Old 03-14-2024, 12:52 AM
tooski tooski is offline
Chief Ponti-yacker
 
Join Date: Oct 2010
Location: Thunder Bay, Ontario
Posts: 597
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Quote:
Originally Posted by Dauntless1971 View Post
I found a rebuilt 400 engine that may not have even had break-in oil changed yet. The price seems fair considering cost of machine work nowadays. But it has the 8 valve relief jobber cast 411np pistons. Would it be worth buying and changing out the pistons to at least l2262f?

I did that. (cuz i broke one of the 8 vr from detonation) The l2262's were just under $400 usd. I added ARP bolts to the rods. The machine shop was another $350 CDN to swap the pistons, install the bolts and resize the big ends. Then another few bucks for gaskets and new rod bearings. You might get a way with reuseing the rings but inadvisable. Then you're close to about $1k if you do the disassembly, ball honing, cleaning, assembly yourself. Older engine that I had. It is worth it for me.

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75 Firebird
68 Firebird 400 RAIII
66 Chevy II 461 Pontiac in AZ

Last edited by tooski; 03-14-2024 at 01:16 AM.