JS94cobra said:Who makes a 331 piston that does not have the oil ring go through the wrist pin?
Grn92LX said:Most 331 pistons don't have the pin through the oil ring BUT it doesn't mater if they do.
Stay 347.
JS94cobra said:Well I already purchased eagle crank and rods. I also want the rod ratio to stay between 1.8 and 1.6. 347 ratio a bit steep as I want the motor to last longer than a 347 would. Do you have any part numbers of pistons. I know SRP makes a piston with the oil groove not through the pin. I am concern about oil consumption with the pin through oil groove.
Grn92LX said:Rod ratio doesn't determine how long an engine lasts. You are choosing parts incorrectly, but its your engine, not mine. Fwiw, my 347 does NOT have the pin through the oil ring but like i've said before its NOT like it matters if it does.
8:1 is the ideal rod ratio. 8 rods to 1 crankA builder I talked to over on hardcore50.com has a 363" with over 185k miles no problems. Damn those 3.40 stroke engines never last
Grn92LX said:The problem with the forums is you have people talking with no first hand experience and that creates myths/rumors. Those myths and rumors scare people and they make mediocre decisions. If you believe rod ratio is important, stay with a 302.
I use probe pistons and I can't say I have any problems. It does not matter if the pin is through the oil ring or not.
What combo are you looking at? Mid 300's is cake walk for a 331 and a 347 but using the same parts on top of each engine, the 347 makes more power through out the entire band. The kits cost the same so its like getting free hp. Now you see why I push the 347?
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