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Reply to "Dyno of Edelbrock Heads"

74 LQQKR,
Crane will want you to use #52631-16 pushrods(heat treated because of guide plates), they are 7.781. Crane seems to gloss over the fact that there is an approx .090 difference between adjustable rocker (boss) and non-adjustable bolt down pushrods. I personally would not sweat the difference. In my opinion .090 , once adjusted for, is not enough to affect the function of your valve train geometry. If you call Crane they will tell you to use a pushrod checker. I've never known them to put their necks on the line when non stock components are used.

regards...Mark
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