so if stock heads are 71cc, what are those? i need to be around 9.5:1cr.

 

alot smaller cc than what you want

 

They are 62cc, They will put the compression way up.

 

I don't understand what's wrong with running higher compression and less boost rather than lower compression and then turning up the boost.

 

You get more HP out of boost than you do out of the compression, within reason of course.

 

Don't forget that the Darts are new castings with thicker decks than the stockers. You can deshroud for the LQ9's larger bore, then cc the chamber to be large enough to run boost if that's the intent.

 

I have had great results out of the patriot heads, I have had 4 diff. pairs on my truck since it had 1800 miles on it.

 

why would you have needed to use 4 different pairs of heads? just wondering.

 

Thats what Im trying to tell everyone. The shoip near me charges 175 to do the chambers however you want them. I can get them cheaper than anyone has posted up Denali if you want same place that I told oyu about the rotating assembly.

PM me for more details.

 

3 diff. setup heads on 6.0, and stage 3 ls6 heads on the 408.