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heavy duty

1990 Single Cab K1500 - Upgrade to F44 (Heavy Duty) front end?

I have a 1990 K1500 single cab without the F44 brake package. The RPO code for my brakes is JB3 (from looking online, this translates to "power brakes, front discs and rear drums, 4600 lbs."). I'd like to upgrade to the heavy duty chassis (stock ride height). I have been sitting on this Power...
- Bushoku
- Thread
- Jan 26, 2026
- 1990 bearing brake brake pads brake rotors caliper f44 heavy duty k1500 spindle
- Replies: 58
- Forum: Axles + Brakes
Lower ball joint size identification on '96 k3500 4x4

I need to order new lower ball joints for my 1996 4x4 k3500 and see that there are 2 diferent sizes, and for forged, welded, or stamped control arms. How do I tell what size I need and for what control arm? Pardon me I didn't know there were these variations for our trucks. I see 46.13mm and...
- Angelo
- Thread
- Jun 30, 2023
- alignment ball joint ball joints front end heavy duty
- Replies: 5
- Forum: Stock Suspension + Bolt On Kits
Heavy Duty Bronze Door Bushings

Sick and tired of your doors sagging? Having to slam the door 45 times then breaking the interior handle off. We have the fix for you. Introducing our heavy duty bronze door bushings. Made from a solid bronze none of that cast stuff. The tolerances are so much tighter. A better tighter fit in...
- Cunningham Machine
- Thread
- Apr 15, 2022
- bronze cunningham machine door bushings door sagging heavy duty
- Replies: 14
- Forum: Cunningham Machine