I have an engine rebuild imminent. Not sure if I'll use these pistons just yet. My 140 already has .030 TRW forged pistons with low miles.
I'll use OfferUp again, try it and see what's in YOUR area!
Chevy dealers sold pistons with the cylinders - never separate. This was done to assure proper piston to cylinder clearance. Years ago I got a 1966 set in a bunch of stuff I bought. You should find a number stamped in ink on top of the piston. The number identifies the piston weight group. Chevy always used the same piston weight group number on opposing pistons. Yes it would be better for all pistons to be the same weight, but for a stock motor the factory system was adequate.
BTW in 1968 some pistons were domed for the emissions engines except the 140HP that always used flat top pistons even with A.I.R equipment. The only folks that want the domed pistons are folks with non-140HP emissions control engines.
Apparently I talked too much to the guy about his turbo parts, he relisted just those for $400! https://offerup.com/item/detail/969454275/
His initial price for everything was $475 but I guess that ship has sailed.
65 Corsa 140/4
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