Thread: head upgrade disappointment

Tweet

Originally Posted by pat mccarthy

i do not know how well the pro comp stuff flows .i will not use it .but theres alot of name brand iron stuff that flows very well and a GM vtech i have used could do a better job i would bet . but any ways if you do not have headers on it now that would help alot . could use more cam move the power band up .i do not care to do that would need to know alot more about the build but .more cfm and more cr and get the EX out of the way will help alot

Pat-don't know enough about the Pro-comps.Because he bought these heads already,any chance he could have them cut down to raise the c/r??. Might be the easiest path to take if he didn't have the block decked.

Originally Posted by 1gary

Pat-don't know enough about the Pro-comps.Because he bought these heads already,any chance he could have them cut down to raise the c/r??. Might be the easiest path to take if he didn't have the block decked.

i know he owns the heads .that i am saying is i never used them or worked over a set or flowed a set to find out if there pigs. most guys love alum look thats why they sell them . what i am saying is there is better iron name brand heads for about the same price or less that work better out of the box i would think . yes he can cut the heads but first needs to were he at now by checking at least one chamber of the heads then go from there. the block should be deck right from the start

Thanks for the input guys!

The chambers are cnc machined to exactly 64cc,my camels were 64cc as well!
I bought them from skip white performance,with a cam around 480/510 lift they
dyno at 410 horsepower according to his website. I had 9.80:1 approx comp ratio
with the camels.
Do I still have 9.80:1 ratio when I changed to aluminium heads? I was told my
ratio is lower when you change to aluminium.

Tech inspector worked out my comp ratio a while back !

My car weighs 2600 lbs, T5 stick shift, 3.08 rear gears and 24" diameter tyres!

Originally Posted by dave350v8

Thanks for the input guys!

The chambers are cnc machined to exactly 64cc,my camels were 64cc as well!

I think from the fact that the chamber size was matched and is even we can rule out chamber size as an issue. Skip White doesn't put out junk or sell lies.... IMO, the runner volume is the issue to be addressed.