If I can reuse the block with out boring, I will. Oversize pistons are available but the problem is getting someone to bore it where I am. If I have to take off work so I can drive 70 to 100 miles each way to bore the block then I'm definitely over the cost of a new block at that point.
I did find a 90mm bore block with electric start for $180.
https://www.nrracing.com/product-p/12000-z5t-90mm.htm
A 90mm block with the original crank will make it a about a 409cc and if the crank is worn I'll try to find a predator crank and rod to make it a 420cc.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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