LS3 821 heads with .660 BTR springs installed and 224/240 cam
Nov 26, 2017 | 09:34 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; Dec 6, 2017 at 11:29 AM.
Nov 28, 2017 | 07:31 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.