Thread: 352 max bore

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i too have a 352 with bored .60 over with a .530 lift .280 dutation cam forged 10:1 pistons edelbrock intake and headers my motor is the coolest running car i have i have never seen it go over 200 usually on a hot day like today down here in georgia it will idle around 160 to 170 i put a 160 thermostat in it and it made all the difference

My 65 352 is bored .060" over and runs cool all day long.

You say its bored to 390, or close. I take that to mean its 4.050 bore, which is .050 over the 352 bore. If you go another .060, that's .110 over stock. That's a bit much, don't you think? I'd go for a sleeve in that cylinder, or find a real 390.