Speedmaster 4340 chromoly steel roller tip rockers have a long slot and are for high lift cams to stand valve spring pressure up to 350lbs. One way to increase power is to increase lift. That's what makesSpeedmaster steel roller tip rocker arms so popular.
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About this product
Product Identifiers
GTIN0840136523260
UPC0840136523260
eBay Product ID (ePID)18035393026
Product Key Features
MaterialSteel
California Prop 65 WarningThis product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Ran these rocker arms without guide plates and they wouldn't stay on the valve. Wish I would have bought self aligning style, these aren't the greatest. They sould recommend guide plates to the customer would have saved me some time and money.