ARP 130-2101 12-pt. Hardened Black Oxide Intake Bolts Kit for GM Gen III LS 4.8L 5.3L 5.7L 6.0LThread Size: 6mm x 1. 0 Washer Included: Yes Head Style: 12 point Fastener Style: Bolt Fastener Finish: Black oxide Fastener Material: Chromoly Quantity: Sold as a set of 10. Notes: These bolts have a 4. 480 in. under head length. Fits engines: 4. 8L RL4, 5. 3L LM7, 6. 0L LQ4 ARP's rugged, black oxide coated chromoly intake manifold bolts are rated at 170,000 psi. They're precision machined for optimum thread engagement and have a wide area flange for

Duration at 050 inch Lift: 215 int

030" bore)

If you're a serious racer

and triple-spring applications

Computer-Controlled Compatible: No

Excellent cam for trucks

rod journals

while promoting more consistent torque loading

Number of Springs Per Valve:Dual

As requested by previous LSX customers

3- bolt throttle body

and camshaft bearings