Thread: big block chevy HP question

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thanks pat McCarthy how much nitrous do you think I cn spray on it?

Originally Posted by ratmotorrookie

thanks pat McCarthy how much nitrous do you think I cn spray on it?

you have the 4 ring stock cast 427 pistons in this ? you running a fepro steel fire ring gaskets like a 1017 or 1037. what is the ring gap all play in to much you can spray . with them heavy cast pistons in that engine and 4 5/64 rings will kill you for any hp i would never build it the way you have it or even spray it... But i would think if the bottom end has clearance right tune 125hp i would lose the pistons use a small dome 2618 aluminum piston use a longer rod if your low buck if not then build it to a 525 or 540 last one i built made over 650 hp at the wheels