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Ordinary roller valve springs will quickly succumb to resonant vibration
Proper cylinder wall notching must be checked to ensure exhaust valve to cylinder clearance
2-1/16 in Diameter
Recommend using an accusump because of the lower capacity
Milodon Crankshaft Scraper - SB Chevy 1DK19338411SFI Ordinary roller valve springs willAdditional "free" horsepower can be found by the installation of a crankshaft scraper. a scraper will remove any excess oil left on the crank & rods that the windage tray does not remove. Scraper requires fitting to individual crank and rod profile, as well as to engine stroke. Wiper should be fitted to within . 045" from rods and . 035" from crank counterweights. When installed, scraper is sandwiched between pan rail and block. For 50 years since its
