just got std heads for 80" shovel. issues now

[79_screamin_fl]

here are the specs of the bike. 80", .020 bore, 9.5:1 comp., and a couple of std heads that won't fit.

the lip on the cylinder measures 3 5/8" and the inside lip on the head measures almost 3 7/8." any of you run into this problem yourselves and is there a solution that involves keeping the std heads and not spending another grand in machine work and cylinders? are these heads just too big for my bore?

[51panrider]

I'm running STD heads on my pan with shovel jugs but didn't have any problems like you just described. Got any pics?

[Badassbrutus]

The head got to be bigger to fit over the lip.See if you head gaskets line up and go from there.3 5/8s is usually a 88"and up motor.

[79_screamin_fl]

i checked the specs and i talked to a few people. the conclusion that i have come up with is that these have been machined out for a big bore project. i got them second hand, but they were never used. i am not 100 % sure what the deal is with them.

[3OliveMartini]

i fnd that any time you have an std there are gonna be problems LOL

sorry couldnt help myself

[Badassbrutus]

Good One ...HAHA^^^

Go to the STD web site look for a tech # there should be a part # on the heads and ask em the bore size and then you will know for sure.