Thread: chevy 250 pistons
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07-11-2005 12:54 AM #1
chevy 250 pistons
Can anybody give me the dimensions on std. bore 250 pistons? Aren't they the same as in a 307? Is the bore 3.875? What about pin size and height?
Thanks,
will
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07-11-2005 07:06 AM #2
I can't remember the height, but I know the bore is the same as the 283 and the 307...3.875.I intend to live forever; so far, so good.
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance