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Old 05-09-2013, 05:20 AM
454C10 454C10 is offline
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I would use a 750 vacuum secondary Holley 3310 with the regular rpm intake (not air gap, not spread bore).

get the compcam 911-16 springs.

make sure to measure installed height now. some 781's had less than 1.900 installed height which will make too much seat force.

I try to run the least amount of spring possible. I feel the 911-16 are a little too strong. I try to set the seat pressure at 100lbs and around 275lbs at max lift with a cam that size. You need to have some tools and take some measurements to get it right.
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