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This site is completely free and there are no costs. Please enjoy and provide feedback.For a stock replacement they're fine.
I will call Scat to get more clarity. Thanks for your help on this! At least I’m narrowing down my options.Rod Bolts without nuts are preferred. 4340 is good strength metal but not all fasteners are created equal. ARP 2000 are good bolts. When in doubt, call Scat for information.
No need for 7/16" rods, 3/8" work perfect even at 7K, never seen a GM truck thumb rod ever fail. The ones out of a 454 are bullet proof we use them all the time without a failure.
Can you name a downside to a 7/16th rod bolt?No need for 7/16" rods, 3/8" work perfect even at 7K, never seen a GM truck thumb rod ever fail. The ones out of a 454 are bullet proof we use them all the time without a failure.
Can you name a downside to a 7/16th rod bolt?
I don't particularly agree with your machinist. 7/16 rod bolts are stronger and 7/16 pushrods are less flexible than are 3/8 pushrods. You have to consider spring pressures on a high performance larger cammed engines. 325lbs on the seat is a bit of pressure. What we don't need in a high revving engine are wobbly parts and weaker rod bolts which are subjected to stress at higher rpm's. Sometimes a little weight is a necessary evil if it's providing more strength. Even the old L-88 427's used 7/16 bolts for a reason.