Monday - Thursday  8:00 AM to 5:00 PM 


Note! ***We are in Central Time Zone*** Note!

311 B East Hwy. 00

Hallsville, MO 65255

Phone: 573-696-3655     Fax: 573-696-7287






In regards to some failures using the Murphys/ARP2000 3/8 x 1 inch 12 point rod bolt. 

We have used over 1000 of these bolts. There has been 3 failures in JD applications in the last year or so. 

I still believe this bolt is up to the task, however I am altering the recommended torque spec. 

The new spec. is 600 inch pounds using specifically (CMD Extreme Pressure Lubricant) on the bolt. 

SEE for more information.



Best contact is by e-mail or by phone.



Effective 3-1-2018

All returns will be subject to a 10% restocking fee!

Congratulations to Ron Kolweier owner/driver and Jim Matzenbacher builder

on their win of the "National Toughest John Deere G" competition

using a Murphy's block and head, plus multiple other parts.

July 29, 2017 Greenville ILL.






Allis Chalmers D14 Rockers

Allis Chalmers D19 Rockers




John Deere G




DT 360-466 Rocker Shaft Support

Farmall M thru 450 Performance Valve Spring, Retainer and Lock Set 


JD Locks and Retainers


John Deere 70 Main Bearing Housing




John Deere A Main Bearing Housing

G John Deere Main Bearing Housings

G John Deere Crankshaft Lip Seal Adapter


Billet Steel John Deere G Crankshafts



SPIN ON OIL FILTER BASE for H thru 450 Farmall

JD Unstyled A Head Gasket 5.780 Bore x .063 compressed thickness

IH RD501 Head Gasket 4.660 bore x .063 compressed Thickness




MURPHY'S MOTOR SERVICE is a complete Performance Machine Shop specializing in pulling tractor parts offering a line of 

High Ratio Roller Rockers  *  Custom Billet Rods





and various other billet parts and accessories.

We also can do custom rockers and accessories for any automotive or tractor applications to fit your needs. 

Owner: Jeff Asbury is a well respected custom engine builder and machinist with over 30 years experience. Shop staff consists of two well seasoned men specializing in Cad/Cam design, CNC Machine operation, and engine building. Our custom billet services consists of parts from small trinkets, brackets and adaptors to complete billet heads. If you have any part you are needing made, give us a call and we will design and build to your particular specification or liking.

Please take time to look at some of our in stock billet parts we are currently offering and give us a call if you don't see what you need.


Our Web-Site is constantly changing, so please visit us again soon!   

Call: 573-696-3655




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