LS3 821 heads with .660 BTR springs installed and 224/240 cam
11-26-2017 | 10:34 PM
#1
LS3 821 heads with .660 BTR springs
Looking to sell a pair of 821 LS3 heads with the lighter valves and BTR .660 springs installed. Used for 531 miles. Asking $900 shipped.
Last edited by YenkoST; 12-06-2017 at 12:29 PM.
11-28-2017 | 08:31 PM
#3
Cam had good midrange with a broad power curve. Didn't get a chance to put it on a dyno before I removed it and went with a cam more suited for the extra boost I'm putting through it now. Made peak power around 6500 with the Holley Hi-Ram I was running in a 370 with 13 psi.