i have 2 #853 heads on their way. they are from a camaro LS1 as you said.
head flows as stock
Stock 853 (Intake) 67 122 178 215 219 227 227
Stock 853 (Exhaust) 52 97 133 156 170 180 180
just going to check things out. if it don't then resell them. tom
Last edited by tlowe #1716; 02/13/09 04:17 PM.