nx264 cam spring question.

[emagdnim]

First here are the specs on this cam
Camshaft Specification Table
Part Number 35-552-8
Engine 1969-1995 Ford
351ci,
Windsor,
8cyl.
Grind Number FW NX264HR-14
Description

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Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.512 0.512
Duration At 0.006 Tappet Lift 264 276

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Valve Timing At 0.006
Open Close
Intake 22 62
Exhaust 76 20

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These Specs Are For The Cam Installed At 110 Intake CL
Intake Exhaust
Duration At 0.05 212 218
Lobe Lift 0.32 0.32
Lobe Separation 114

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Recommended Valve Springs 986-16


, now here is the specs on those valve springs...


Part # Description ID Seat Load Open Load CoilBind Price/Set
986-16 1.430 2-Spring (984-974) .697 132 @ 1.750 280 @ 1.250 1.150 $83


How different are the specs on these springs then from the stock 5.0 heads? Im installing this cam in my ported stock heads but im not sure where im gonna find these springs in canada... I have some old racing springs that have a inner spring what if i just used those inside of new stock springs would that work?

 

[90Notch]

Springs are a very important part of the combo, you shouldn't toss an old set of racing springs that have a inner spring in there without knowing what the rates are.

The 986 spring is different than stock springs but many have complained about them still being too soft for that cam. Most run a spring that has @ 140-145 seat & @ 350ish rate with excellent results.