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What is the the max safe RPM without changing valve springs to heavier ones?
It is generally accepted that you can run these engines as far up as 3300-3400 MAX without the need to go to the heavier 60lb valve springs.
You must however, make sure that you have a good, accurate valve set at that level.
BOB.
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Pastor Bob
93.5 W250 4X4/CC,POD's,DTT 91%TC/VB/TRANNY,4" exhaust, Detroit Locker, new PDR R&D turbo w/flux capacitor, 373RWHP on #2 fuel, Stage 2 water/meth,AFC@100% custom cone, StarWheel topped, Valet switch,
Timed@16*,K&N,Isspro-Pyro/Tach/
TransTemp,AutometerBoost,Borgeson RS-9000's. Thanks 2 PDR & DTT.
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Linear Mode
