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900 rpm when tested on the Akrapovič dyno against a Porsche 718 Cayman GT4 RS with a standard stock system
450˝ Thread Size 5/16-24 Fastener Style: Bolt
It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants
forms a complete system from the manifold to the tailpipes
8 Nm at 4300 rpm (+8
ARP 135-5402 Main Stud Kit for CHEVROLET Big Block 2-bolt ymm_33 900 rpm when tested onSpecifications Socket Size(s) 3 4 hex, 9 16 12pt, 3 16 Allen Material: 8740 Chromoly Kit Type: Stud Main Bolt Style: 2 Bolt Finish: Black Quantity: Kit Kit Instructions Fits Following Engines: 402 CID Chevy Big Block V8 Fits Following Engines: 427 CID Chevy Big Block V8 Fits Following Engines: 454 CID Chevy Big Block V8 Fits Following Engines: 427 Chevy Big Block V8 (Mark I "Z11") Fits Following Engines: 396 CID Chevy Big Block V8