Scroll notes
Type firstDescription
combined with approximately 40% weight reduction
backfiring and accelerating
Fits Following Engines: 460 CID Ford Big Block V8
the system integrates dual valves—one per side of the main silencer—to modulate gas flow and deliver the unmistakable Akrapovič tone
Firebird 1977-1992
ARP 745-4250 SAE Bolt Kit 1/2-20 x 4.250 hex SS bolts ymm_10 combined with approximately 40% weightSpecifications Socket Size(s) 9 16 hex UHL 4. 250 Thread Length 1. 250 Grip Length 3. 000 Thread Diameter Pitch 1 2 20 Grip Diameter 1 2 Wrenching 9 16 Head Height 0. 450 Collar Diameter 0. 850
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