GT40 vs standard heads

[tockit]

Originally Posted by Cloaked

You can find them here (maybe) http://www.tristatecylinderhead.com/

A friend of mine snagged a set a few months ago for US$575 + shipping. Their site showed plenty in stock (at that time) but when he called, they had none in stock but took a core and built him a set in three days. Upon his request (recommended) they drilled the bolt holes out to 1/2" dia. You'll have to reuse your current push rods and rocker arms but the rest is plug and play.

I'm sure this has been covered, but why do you have to drill out the bolt holes to 1/2"?

Do the GT40 heads come with smaller bolt holes than the what 351 heads have?

Just trying to catch up!


Thanks!

[j.mccreight@hotmail.com]

Originally Posted by tockit

I'm sure this has been covered, but why do you have to drill out the bolt holes to 1/2"?

Do the GT40 heads come with smaller bolt holes than the what 351 heads have?

Just trying to catch up!


Thanks!

Yes the gt40 heads have 7/16" head bolts and come off the 302, and the 351w has 1/2" head bolts.