I had 3 pulls on a Dyno jet , Bone stock and my first pull was 10.8:1 AFR and the second two picked up to 11.2:1 ! I think its just the random factory settings??? I made 380rwhp and 383 rwtq. Same dyno another stock LS-3 had 12.5:1 with 6 less hp and 8 less on the tq.
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2010 Camaro SS RS M6 Bone stock 12.58 at 110mph http://www.camaro5.com/forums/showpo...&postcount=263
1971 Chevelle SS 454 365hp NHRA C/SA 10.73 at 122
1969 Camaro (427 ZL-1 clone) M-22 being built
1982 Siverado 4x4 454 Mud truck stock class 3.66 sec in 150' of mud
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