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Author
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Topic: E303 and valve spring question??
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Howdy
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Member # 3099
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posted
 
 
What valve springs are people running with their E cam? Stock springs? I bought some ported E7's and had them checked out and the aftermarket Manley springs that were on there are close to 400lb's per inch. Probably too much for this cam. Since I have to get new springs what is everyone else running with this cam? Thanks
Posts: 36 | From: Folsom, Ca | Registered: Jul 2003
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section525
Sponsored by Corona®
Member # 2819
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posted
I'm using FMS Valve Springs FMS-M-6513-A50 ![[Cool]](cool.gif)
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1996 5.0L K&N Intake, E-303 Cam, 1.6 Roller Rockers, TM Headers, Magnaflow, on 35s!
Posts: 207 | From: Chico, CA | Registered: May 2003
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Howdy
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Member # 3099
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posted
Thanks for the heads up. I was looking at those springs and thinking of going that direction of more of a stock replacement. Are you running the GT-40 heads or the E7's?
[ August 17, 2004, 06:47 PM: Message edited by: Howdy ]
Posts: 36 | From: Folsom, Ca | Registered: Jul 2003
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section525
Sponsored by Corona®
Member # 2819
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posted
GT40-Ps.
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1996 5.0L K&N Intake, E-303 Cam, 1.6 Roller Rockers, TM Headers, Magnaflow, on 35s!
Posts: 207 | From: Chico, CA | Registered: May 2003
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Cobra P51
New Member
Member # 3987
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posted
I am running HD Manley springs with my E303 cam & 1.7 Cobra rockers. FWIW, I have heavily ported/polished/decked GT-40Y alum heads.
125# closed (seat) pressure
375# open pressure
My engine revs cleanly to 6K RPM with the above setup.
Personally, I wouldn't run the stock GT40Y springs with the E303 & the 1.7s...not enough spring pressure.
Regards,
Sean L.
[ August 18, 2004, 03:31 PM: Message edited by: Cobra P51 ]
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Sean L
'94 Cobra w/ Griggs GR-40
Posts: 5 | From: East Bay | Registered: Jan 2004
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