AFR heads + what springs

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08-01-2013, 04:56 AM

GT350son

2nd Gear Member

Thread Starter

Join Date: Oct 2008

Location: NY

Posts: 200

AFR heads + what springs

I have a 351W going into a fox body (I know there is a 351w portion but doesn't have a lot of traffic and this can go for the 302s as well.) Anyways I would like to know if I need any different springs or retainers with the heads..
http://www.summitracing.com/parts/afr-1451. My cam is solid lifter and pretty close to .700 lift on intake and exhaust (spec sheet attached). Thank you.

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AFR heads + what springs-408w-cam-specs.jpg

Last edited by GT350son; 08-01-2013 at 04:59 AM.

08-01-2013, 07:07 AM

mjr46

D.R. THE PATHETIC DORK

Join Date: Jun 2007

Location: West Virginia

Posts: 30,863

I never use the junk springs that come on heads, get what your cam requires, solid lifter cams need seat pressure

08-01-2013, 10:50 PM

tinman

5th Gear Member

Join Date: Aug 2004

Location: Arizona

Posts: 4,103

If that cam is a solid roller type you need at least 200# on the seat as a minimum.
Call whoever made the cam and find out for sure what springs to use.
I always check spring pressure before I install them, BTW.