I've blown 2 LS1 motors this last summer road racing a 2000 Camaro stock LS1 that overheated to 240F+.
Examined the tune, the AFR modifers had been set to 80 at higher rpm's (3000+), equals an AFR of ~11.7 (pig rich), with advanced timing.
Would this cause the motor to overheat after about 10-15 mins of racing hard?
Thanks.