Anyway, a buddy suggested some 6X heads milled to the cc I need for the compression I want to run. Question is, what heads exactly? I have a '75 intake, but I want to go with a unit that is a little better flowing. Am I going to have gasket matching issues? Dave
You can go several ways with the rebuild..
96 heads 96 cc chambers 9.2 to 1 with SRP 10-12 cc piston standard deck 455.
6X or 5C heads 6.7 cc piston. zero deck
Those 6X-8 have 112-114 cc chambers (455) or 98 cc 400
Why zero deck? Why spend $$$ on H beams. Resize stock rods with ARP bolts, you'll do just fine. Not like you are ripping up mad with an 87 cc low compression motor.
I agree on the rods. I have concluded this will be a low rpm motor and the money is better spent elsewhere. Zero decking just to help with combustion issues. I don;t know why, but it made a heck of a difference on the last two motors I have had. I was told it was a flame front/ travel issue with Pontiacs. Am I wrong for doing this on this motor? It's ready for the machine shop, just not gone yet.
Since we are talking sompression, heads, ect. What is a good economy piston that won't weigh a ton?
Thanks for the info guys! I really do appreciate it!!
Dave
New to me '68 Conv. 350. 2 Speed. Red on Black.
455 on the stand getting ready to bolt up to a TH400.
