Tech Tip: To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs such as the RC12YC (P/N 192-49776). They are 0.230'' shorter than a conventional spark plug and have a 5/8'' hex for easier access.
Valve LiftIntakeExhaust.100''7471.200''143128.300''207153.400''250178.500''284200.600''309218.700''N/AN/AFlow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O