DRR Top Comp
| only one reply because its dead on. With flat tappet cam you need to run very close to manufacture suggestions,add zinc additive to oil if it does not have it and most don't now days. Flat tappets work fine when used as designed with loads used during design. Look at specified springs and go from there.50 lbs open does not sound like much but its about 14% increase over your normal spring.
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| Posts: 4528 | Location: Greensboro NC | Registered: May 24, 2011 |
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DRR Pro
| its been long enough my memory is failing me,but here is a thought i tink we ran 425 on ours,but,i also remember wiping lobes on startup.lol not a good thing.we would leave the inner springs out use the best lube we could get and breakin on low pressure and then put inners back in.you didnt list cam specs but less pressure may be safer.can shims be removed?
honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224
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DRR Pro
| The real question is, what did the cam manufacturer recommend for spring pressure. They know the cam material and what it will take.
Fellow racer and servant of the Lord of Lords John 14:6 "Creekside Racing Ministry" MFI system, ProCharger Non-intercooled [6.02 @ 229 or 3.91/660' soft tune and killing power above 6K rpm] Ron Clevenger
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| Posts: 1006 | Location: Visalia, Calif. 93292 | Registered: November 23, 2000 |
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