This is topic GT40 valve springs?? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 510Notch (Member # 9353) on :
 
i picked up a nice set of GT40 heads (non P) awhile back for a good price.

im finally getting around to cleaning them up. my plans are nothing radical, no porting or anything like that. i just want to clean them up and run new valve springs.

but where can i get stock replacements or better quality valve springs. if anybody knows part numbers or dimensions on these that would be great. thanks
 
Posted by copcar (Member # 10113) on :
 
Gt40 Iron production spring - M-6514-A50. Call FMS. 1-800-ford788. Look them up - www.fordracingparts.com

[ September 09, 2010, 03:54 PM: Message edited by: copcar ]
 
Posted by JohnB (Member # 969) on :
 
Summit part number FMS-M-6513-A50. 1.460 outside diameter, 1.006 inside diameter. Installed Height 1.820 in. Seat Pressure at Installed Height 110 lbs. Open Height 1.400 in. Open Pressure 240 lbs. Good to about .520 lift.

$75, in stock.
 




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