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COMP Cams 4851-1 Flat Guide Plates AMC 290-401 Pontiac V8 5/16" Pushrod

(Jeep Cherokee 1974-83, CJ7 1976-81, CJ5 1971-81, Grand Wagoneer 1984-91, J10 1974-88, Wagoneer 1972-83, J20 1974-88, Commando 1972-73 + 46 more models)

Part of: COMP Cams Guide Plate

Other options in this family: COMP Cams 4808-8 COMP Cams 4806-8 COMP Cams 4816-8 COMP Cams 4851-8 COMP Cams 4810-8

Manufacturer

Picture for manufacturer COMP Cams

Part Number

4851-1
6 reviews
Sale Price

$9.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams 4851-1 flat guide plates are precision-engineered components designed to maintain proper pushrod alignment and reduce valvetrain friction in AMC 290-401 cubic inch engines and Pontiac V8 applications. These one-piece steel guide plates ensure consistent rocker arm geometry throughout the valve lift cycle, promoting reliable performance and extended component life.

Key Specifications:

  • Design: Flat, one-piece construction for maximum stability
  • Pushrod diameter: 5/16 inch
  • Rocker stud size: 7/16 inch
  • Compatible with AMC 290, 304, 343, 360, 390, and 401 cubic inch engines
  • Compatible with Pontiac V8 engines using 5/16" pushrods
  • Precision-machined steel construction

Features and Benefits:

  • Maintains precise pushrod-to-rocker arm alignment under all operating conditions
  • Reduces side loading on valve guides and rocker arm studs
  • Helps prevent pushrod deflection at high RPM
  • Essential for performance applications with higher spring pressures
  • Direct replacement design for easy installation

Guide plates are particularly important in performance builds where increased valve spring pressure and higher engine speeds can cause pushrods to flex or wander. By constraining pushrod movement, these guide plates ensure optimal valvetrain geometry and help maximize engine performance while protecting critical valve components.

Products specifications

Fits

Jeep Cherokee 1974-83, CJ7 1976-81, CJ5 1971-81, Grand Wagoneer 1984-91, J10 1974-88, Wagoneer 1972-83, J20 1974-88, Commando 1972-73, CJ6 1971-75, Jeepster 1971-73, J-100 1971-73, J-2500 1970-73, J-4600 1971-73, J-4500 1971-73 + 40 more models

Type

Flat

Engine Family

Pontiac 350-455

Pushrod Diameter

5/16

AMAZON ASIN

B001R98EQ0

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

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?

Yes

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. Exemption Reason

No impact on pollution output of 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.

Adjustable

No

Stud Diameter

7/16

product just as described, received in 3 days

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

fast

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

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