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#1
09-23-2020, 07:58 AM
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Valve spring choice
For guys with higher lift cam profiles and lift range around 800 net, what brand valve springs are best. PAC, Comp,??. I had a set of PSI springs that didn't last. 25 passes and they lost 60lbs on the seat. No coil bind issues. Cam profile was not too crazy. Duration 276in 284ex. At the cost of springs these days,I would like your input on a Quality Valve spring. We put in PAC Triples recently. See how these work.
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#2
09-23-2020, 10:08 AM
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Manley 221424 set up at 1.950
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#3
09-23-2020, 12:14 PM
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Wonder if you got a bad batch? I ran PSI triples with slightly more duration and lift set up at 2.0 with no issues. Pac is good stuff as is Manley like Paul suggested
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Dave Polichena |
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#4
09-23-2020, 12:27 PM
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I be looking into Manley springs also as suggested above!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#5
09-23-2020, 05:43 PM
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I've had no troubles with PACs
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1978 Pontiac Grand LeMans.......out next year Previous - 2001 Jerry Haas-built P/S Grand Am - former WJ car, Hoffman Racing 535" IA2, Tiger Heads/Intake, Single Dominator, PG Best ET: 7.776 @ 175.94, 1.096 60', 2375 lbs. |
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#6
09-23-2020, 06:22 PM
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Manley Nextek Springs
Unless I'M mistaken, PAC makes the Manley Nextek Springs. I've used both with good results.
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---------- http://www.pas4performance.com Proud to Say, "Made in the USA"  ---------- |
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#7
09-26-2020, 08:17 PM
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I have had really good results with PAC, Ferrea, and Erson springs in the tripple, high seat pressure applications. 350-450 lb. seat pressures. I have a few sets, both new and used available in those pressure ranges if interested. 1.677 OD. PM me if interested.
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#8
09-28-2020, 07:18 PM
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I use a 1.645" diameter spring. See how these PAC's hold up. Thanks for the Input Guys. Should be able to get 125-150 passes out of these.
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#9
09-29-2020, 06:20 AM
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Have you ever sent a set out to be cryogenic treated before using them, as it can't hurt in terms of life expectancy.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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