Choosing right springs
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Joined: Feb 2001
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From: Keller, TX
Car: 06 Toyota Tundra SR5
Choosing right springs
ok with my cam, what kind of springs would I need? What numbers do I need to look for on "Valve lift up to: ?" the diameters, and open coild bind, etc. My cam is 477/510 lift 208/220 duration.
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Joined: Dec 2001
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From: Binghamton, NY
Check out : http://goautocenter.com/super_deals.htm
ZZ4 springs, shims, retainers (set of 16) $50
For a hyd. roller cam you want a spring with 120 - 140 lbs. closed and 325-340 lbs. open.
If you have the current issue of GM High Tech Performance, check out the article of their project car "ThunderChicken". They show specs on the springs they changed the worn out ones for.
They're basically a solid lifter spring - slightly lighter.
A flat tappet hyd. cam would have 100-110 lbs. closed and 280-290 lbs. open for comparison.
Hope that helps,
Scott
ZZ4 springs, shims, retainers (set of 16) $50
For a hyd. roller cam you want a spring with 120 - 140 lbs. closed and 325-340 lbs. open.
If you have the current issue of GM High Tech Performance, check out the article of their project car "ThunderChicken". They show specs on the springs they changed the worn out ones for.
They're basically a solid lifter spring - slightly lighter.
A flat tappet hyd. cam would have 100-110 lbs. closed and 280-290 lbs. open for comparison.
Hope that helps,
Scott
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