Hey guys, I got a '71 Camaro with a large journal 307. the motor is a fresh rebuild, and i just cammed it and put heads on it. the block is high nickel (checked the casting marks). I want to pu a 125 shot on the car to bring it to the high 12 low 13 range (runs high 13 now) will this break my motor or am i good?

 

125 shot is a big shot

You will need fuel upgrades

 

I got a double pump holley an a 12 psi fuel pump