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COMP Cams 1607-8 Ultra Pro Magnum Rocker Arms 1.52 Ratio SBC Twisted Wedge

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-95, C1500 1979-95, K2500 1979-95, Jimmy 1970-91, C3500 1979-95, K2500 Suburban 1979-95 + 158 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

1607-8
4 reviews
Sale Price

$263.95

3 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The COMP Cams 1607-8 Ultra Pro Magnum rocker arm set is engineered specifically for small block Chevy engines equipped with Twisted Wedge cylinder heads. Featuring a 1.52:1 rocker ratio, this set provides increased valve lift for improved airflow and engine performance compared to stock 1.5:1 rockers.

Key Features:

  • 1.52:1 rocker ratio for enhanced valve lift and performance
  • Ultra Pro Magnum series construction with needle bearing fulcrum design
  • Precision CNC-machined aluminum bodies for strength and light weight
  • Self-aligning needle bearing roller trunnion reduces friction and wear
  • Needle bearing fulcrum provides smooth, consistent operation
  • Application-specific geometry for SBC Twisted Wedge heads
  • Complete set includes all rockers needed for V8 installation

These rocker arms are designed to handle high-lift camshaft profiles and elevated spring pressures while maintaining precise valve control. The roller trunnion design minimizes friction at the pushrod contact point, and the needle bearing fulcrum ensures long service life even in high-RPM applications. Direct replacement for stock rockers with proper geometry for Twisted Wedge head valve angles.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-95, C1500 1979-95, K2500 1979-95, Jimmy 1970-91, C3500 1979-95, K2500 Suburban 1979-95, K3500 1979-95, C15/C1500 Pickup 1967-74, 1979-83, C2500 1979-95, K1500 Suburban 1979-95 + 154 more models

Maximum Valve Spring Open Pressure

850

AMAZON ASIN

B005H89RCW

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

Rocker Stud Diameter

3/8

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Rocker Arm Material

8650 Chromemoly Steel

Rocker Arm Ratio

1.52

Rocker Arm Series

Ultra Pro Magnum

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) w/ Twisted Wedge Head, Intake Valve

This was my first purchase from Autoplicity, I bought a HyperTech tuner for my truck, they had absolutely the lowest price of anywhere I looked by far. Only thing I could fault them on is that it took 3 days for the product to ship, a little bit long I feel for something that was in stock, but Ill overlook it since it was such a great price.

Autoplicity was quick, and fast! the shipping was standard but arrived in five days! I would definetly recommend them!

great store

I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.

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