Quote:
Originally Posted by Steve C.
Skip, It is my understanding on the Edelbrock head the center-to-center valve spacing increased from stock 1.98" to 2.030" (.050").
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100% correct. The exhaust valves were moved .050 over. That is why e-heads come with 1.66 exhaust valves because a 1.77 valve would hit the valve pockets on most pistons that were made in the 90s when they were released.