What did stock 197 HO heads flow?
Just curious what the 197 HO heads flowed stock. Also while we're at it, Ram Air IV too. How did these stack up against the D-ports like 670's, 13's or 6X? When I got ready to do my 455 street motor, I had the 197's, 13's and 6X to choose from. I chose the 197's just so my 69 GTO would resemble a Ram Air IV with the H-O intake and round ports.
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1965 TriPower GTO, 1967 GTO, 1969 GTO, 1969 Judge, 1972 GTO, 1977 Smokey and the Bandit, 1989 TA ProStreet, 1968 Firebird NHRA 10.90 racecar, 1963 Tempest S/Gas
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