Best 273 and 318 builds (NO 360's please)

mopardude318 said

rumble, thats a very good point you have....I wonder why edelbrock recommends 1.5 ratio with the rpm cam? I think with that cam which is 488/510 is plenty for my 318...how much more would it be with 1.6 rocker arms? do you think that would be too much lift altogether for my 318, with those heads/springs?

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My bad, the eyes mis-read and I thought you said "Performer cam" to be used. You can figure out the lift changes by taking the current lift @ 1.5 and dividing it and then taking the answer and multipling it by 1.6 to get your answer.

I think the extra ratio is to much for un-modified J heads. Edelbrock recomends a 1.5 becasue it is stock.