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BLOCKS HEADS MANIFOLDS   STYLED      BLOCKS   HEADS   MANIFOLDS
UNSTYLED BLOCKS   HEADS   MANIFOLDS

JOHN DEERE PONY RODS

Click Here to see Pony Rods


JOHN DEERE G PARTS

Connecting Rod pictured included in 9.5 inch Stroke Rotating Assembly

John Deere “G” blocks:

12.560” overall length

 

    • NOTES! Crankcase modification required for installation!!!!

 

  • JD-G 7.500” bore block (Includes:  pistons, pins and piston rings)            $4,400.00

  • JD-G 7.750” bore block (Includes:  pistons, pins and piston rings)            $4,800.00

Cylinder Sleeve notch for Cam Gear


 

G Head (Manifold Side)crop.jpg (164946 bytes)

G Head (Top View)(2)crop.jpg (342479 bytes)

G Head (SN Closeup).JPG (544956 bytes)

G Head (Valve Closeup).JPG (724604 bytes)

John Deere “G” head:

 

  • Valve sizes:  Intake 2.850” Exhaust 2.650”
  • 5” thickness, same as F485R unstyled head.
    • NOTES! Requires shorter head studs and pushrods when using in styled tractors (when replacing cyclone style head)
  • JD-G Head, with valves and springs (DOES NOT include: valve locks, or spring retainers)              $1,750.00

Stock Replacement John Deere "G" Valve Springs - ALL

80#@3.200, 135#@2.700, 155#@2.500, 175#@2.300, CB@1.950

#MF53R - $50.00 a set

 

 

Stock Replacement John Deere "G" Valve Guides

Fits serial 13000 up (will fit below #'s by shortening guide 1/2")

#MF727R - $50.00 set

 

*NEW* Head Gasket 6.55 Bore x .064 Thick *NEW*

works for G and 70 all fuel applications

 


 

 

G Manifold (Front View)crop.jpg (224478 bytes)

John Deere “G” Manifolds:

"G" Manifold has been redesigned for water pipe clearance, October 09.

  • Three styles available: 
    • Large runner to fit Murphy’s heads
    • Small runner to fit John Deere heads. 
    • Duplex manifolds to use two-barrel carburetors from JD 50-730 tractors

 

Manifolds include 2 gaskets and grade 8 fasteners..

  • JD-G Manifold-Large    (To fit Murphy’s Head)   $280.00

  • JD-G Manifold-Small     (To fit John Deere head) $280.00

  • JD-G Manifold-Duplex                                         $450.00

Duplex (Front View)crop.jpg (218057 bytes)


 

JOHN DEERE STYLED A PARTS

“Styled A” Parts (Fit tractors SN: 488000 and UP, unless noted): 

John Deere Styled "A" Blocks:

 

NOTES! Crankcase modification required for installation!!!!

 

ALL A blocks are 11.82" overall length

  • #1  6.500” bore block, fits SN: 410000-583999 (Includes:  pistons, pins and piston rings)(Will fit in unstyled tractors, but must use styled head)                            $4,400.00

  • #2  6.500” bore block, fits SN: 584000-647999 (Includes:  pistons, pins and piston rings)    $4,400.00

  • #3  6.500 block, fits SN: 648000 and up (Includes:  pistons, pins and piston rings)                  $4,400.00

  • #4  6.750 block, fits SN: 648000 and up (Includes:  pistons, pins and piston rings)                  $4,700.00


 

John Deere Styled "A" Heads:

"New improved design" 

Dyno tested 14-15 HP more than an original "Jerry's" head on a 538ci engine.

6-7 HP more than a ported, big valve Heisler head on the same engine.

  • Valve sizes: Intake 2.500"  Exhaust 2.0"

  • 5.42" Cylinder head thickness

 

*NEW* Performance Replacement John Deere "A" Valve Springs - ALL *NEW*

48#@2.750, 77#@2.250, 93@2.00, 100@1.900, CB@1.550

#MA356RP - $50.00 a set

 

JD-Styled A Head, with valves & valve springs (DOES NOT include valve locks, or spring retainers) $1,850.00


 

John Deere Styled "A" Manifolds:

 

 

 

"A" Manifold has been redesigned for water pipe clearance, October 09.

  • Fits tractor serial numbers 488000-584000
  • Fits tractor serial number 584000 & up by changing
  • Exhaust pipe. NOTE mounting flange difference.

 

Manifolds include 2 gaskets and grade 8 fasteners

  • JD-SA Manifold-Large (To fit Murphy’s Head)  $280.00
  • JD-SA Manifold-Small (To fit John Deere head) $280.00
  • JD-SA Manifold-Duplex                                     $450.00

 


 

JOHN DEERE UNSTYLED "A" PARTS

“Unstyled A” Parts (Fit tractors SN: 410000 to 487999, unless noted)  

Unstyled "A" Blocks:

  • #1 6.500” bore block, fits SN: 410000-583999 (Includes:  pistons, pins and piston rings)(MUST USE STYLED HEAD!!)                                  $4,400.00

 


 

Unstyled "A" Heads:

 

  • JD-Unstyled A Head, with valves (DOES NOT include: valve locks, valve springs or spring retainers) Call for Pricing: 

573-696-3655

 


 

Unstyled "A" Manifolds:

"NEW"

Small Port version to match Stock Head

  • JD-USA Manifold                               $250.00



 

MURPHY'S MOTOR SERVICE

311 B Hwy 00

Hallsville, MO 65255

 

Call: 573-696-3655

 

E-mail: jeff@murphysmotorservice.com