First time swapping edelbrock aluminum for 915 cast iron heads.

roccodart440 said

Not if they outflow the iron heads. I went from 906's to eddy heads that were blueprinted and mildly ported. 88cc chambers on both.

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Lifters have to go back in the same hole, why pull them to change heads tho?. PUSHRODS DO NOT AS LONG AS THEIR STRAIGHT AND IN GOOD SHAPE. I would almost bet u will need longer pushrods w/ alum. heads too.