Quote:

IIRC,i thought I read to use the 3100 GM spring with the 2.2 retainers also

IIRC I talked to patrick about that when he sugested the comp 901-16 spring for my pre-mag roller set up

and the GM 3100 for a mag head





the 901's are good for an LA head where you don't have the rocker ratio, and more installed height than a mag head.

the 2.2L retainers allow you to use any single spring in the 1.4-1.45" OD range.

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