I have a set of PRC 5.3 casting, stage 2.5 heads that I'm letting go. They have the 918 springs and about 1500 miles on them. I want to get $850 firm, plus shipping. I can and will get pics up soon. These heads are very clean and near new.

 

what is the combustion chamber size?

 

http://www.texas-speed.com/shop/item...id=84&catid=40

 

That doesn't tell the combustion chamber size; from TSP I think they are 59 cc but he could've had them milled.

 

they are 62 if you don't get them milled (I called a while ago)... Mine are 58....

 

any idea where compression would be on a lq4?

 

About 10.7-10.8:1.......

 

with what chamber size. 64 cc heads on a lq9 are 10.7 ish. how big is the dish in the piston?

 

Are you sure? a stock LQ4 is ~9.5 with 71cc chambers...

 

John from TSP says they are 61-62cc chambers.