You can try the Comp Cams Roller tips.. Full on rollers will require atleast a .600 or .700 spacer under the factory covers. You can put the 1.6 roller tips on the exhaust and the intakes the wake up the cam some. Its about a .030 to .035 lift increase when you up the tips to 1.6. Can your springs handle the extra lift?
Dave
67 Nova Boy
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