Engine

 
13 - 24 of 31 items
Complete Valve Spring Kit for 36-47 Knucklehead Valve Keys for 36-47 Knucklehead
Complete Valve Spring Kit for 36-47 KnuckleheadValve Keys for 36-47 Knucklehead
Designed for maximum performance Features interference-wound, double-chrome silicone springs; heat-treated steel base washers .415" lift Includes steel retainers Made in the U.S.A.Made of a special chromoly material Hardened and coated with black oxide for durability and longer wear Made in the U.S.A. NOTE: Not for use with thin-stem valves.

$151.95

$31.95

Tappet Adjusting Screws for 36-47 Knucklehead Tappet Adjuster Locknuts for 38-47 Knucklehead
Tappet Adjusting Screws for 36-47 KnuckleheadTappet Adjuster Locknuts for 38-47 Knucklehead
  • Sold each
  • 9/32"-32 threads
  • Made in the U.S.A.
Split locknuts with 9/32"-32 thread Sold in four-pack Made in the U.S.A.

$6.95

$8.95

Tappet Roller Kit for 29-47 Knucklehead/Flathead Upper Pushrod Tube Cover Kit for 40-47 Knucklehead
Tappet Roller Kit for 29-47 Knucklehead/FlatheadUpper Pushrod Tube Cover Kit for 40-47 Knucklehead
Made from 52100 bearing material Includes 4340 chromoly axle Sold each Made in the U.S.A.Upper cover kit contains chrome clips, chrome cups, springs, rubber seals and steel washers for four pushrod tubes Made in the U.S.A.

$30.95

$48.95

"N" Grind Cam for 37-47 Knucklehead Engines "S" Grind Cam for 37-47 Knucklehead Engines
"N" Grind Cam for 37-47 Knucklehead Engines"S" Grind Cam for 37-47 Knucklehead Engines

Stock Knuckle replacement cam For stock motors and restoring an older classic engine, this is the cam to use Made in the U.S.A. Intake: Open: 13 degrees /Close: 44 degrees /Duration @.053: 234 degrees /Valve Lift: .348 Exhaust Open: 47 degrees...

"S" GRIND CAM Bolt-in performance cam Smooth idle, strong pull to 6000 rpm This cam is the Knuckle equivalent of a "B" cam in a Pan/Shovel motor Made in the U.S.A. Intake: Open: 27 degrees /Close: 55 degrees /Duration @.053: 262 degrees /Valve...

$176.95

$176.95

Cam Cover Bushing for 36-47 Knucklehead Cam Bushing Kit for 36-47 Knucklehead
Cam Cover Bushing for 36-47 KnuckleheadCam Bushing Kit for 36-47 Knucklehead

Bushing is made from solid bronze bar stock Machined in one operation with a tolerance of .0002" Feature a lead-in for ease of installation Sold each Made in the U.S.A.

Kit includes cam and gear shaft bushings/bearings, along with lock pins and thrust plate, OEM #s 275, 25551-36, 35581-36, 25582-36, 25597-36, 25785-30A Made in the U.S.A.

$24.95

$78.95

Idler Gear and Circuit Breaker Bushings/Studs Circuit Breaker Shaft Kit for 36-47 Knucklehead
Idler Gear and Circuit Breaker Bushings/StudsCircuit Breaker Shaft Kit for 36-47 Knucklehead
Idler gear bushings for37-73 45" Flathead, 37-48 74" Flathead, 37-41 80" Flathead; idler gear bushings and circuit breaker bushings for 36-47 Knucklehead Made in the U.S.A
  • Circuit breaker shaft kit consists of a shaft and two replacement bushings
  • Made in the U.S.A.

$18.95

$40.95

13 - 24 of 31 items