Can you convert 72 K10 front brakes to K20? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fishmunger · 01-12-2020, 02:51 PM

Without swapping complete axles? I would like to get the bigger front discs/calipers? Will the k20 parts fit on the k10 d44? Could i keep it six lug or would i have to go to 8 lug?

Thanks

**kwmech** · 01-12-2020, 02:58 PM

The K20 brakes are not all the much larger than the 10s. Are you having a braking problem or just want more stopping power.

And yes you wold have to go to 8 lug

**Richard** · 01-12-2020, 03:08 PM

What kwmech said. 1/2t 3/4t are the same knuckle to knuckle. Have to change spindles, hubs rotors, calipers and I think the outer axle stub shafts. Have seen talk about some D44's that have thicker axle tubes.

**DeadheadNM** · 01-12-2020, 03:40 PM

You could install the 3/4 t booster for added braking power. Seems like guys that have gone this route have been pleased. Might be a useful first step.

fishmunger · 01-12-2020, 04:33 PM

Thanks guys. The reason I ask is I have been looking for a k20 for a couple years. Finally came across a clean k10 that I like a lot. I want to use the truck for work and need to be able to regularly tow a heavy 22’ boat (approx 6-7k lbs). I’m wondering if the k10 will be able to stop it.

**Ol Blue K20** · 01-12-2020, 05:19 PM

Does the boat trailer have brakes?

**kwmech** · 01-12-2020, 05:57 PM

Quote:

Originally Posted by fishmunger

Thanks guys. The reason I ask is I have been looking for a k20 for a couple years. Finally came across a clean k10 that I like a lot. I want to use the truck for work and need to be able to regularly tow a heavy 22’ boat (approx 6-7k lbs). I’m wondering if the k10 will be able to stop it.

Convert the truck to 3/4 then, use a 14b in the rear and convert the front to 8 lug. You can still use the 1/2 ton calipers on the 8 lug rotors. Rear conversion will give you a 13'' drum. Then use the 3/4 ton booster and MC

I do not own anything 1/2 ton. Years ago I had an incident with a C clip breaking and an axle shaft walking out the side of the truck. Never again--always a full float for a truck.

fishmunger · 01-12-2020, 07:01 PM

Ok so youre saying leave the front axle but convert it to 3/4 stuff, and find a full float 14 bolt from a 80s chevy? The eaton axle that comes stock in most 72k20s is ff as well?

I could put brakes on the trailer if i had to. But thats annoying cuz it sees constant saltwater use and the brakes never hold up.

01-12-2020, 02:51 PM	#1
fishmunger Registered User Join Date: Jan 2005 Location: CA Posts: 411	Can you convert 72 K10 front brakes to K20? Without swapping complete axles? I would like to get the bigger front discs/calipers? Will the k20 parts fit on the k10 d44? Could i keep it six lug or would i have to go to 8 lug? Thanks

01-12-2020, 02:58 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,595	Re: Can you convert 72 K10 front brakes to K20? The K20 brakes are not all the much larger than the 10s. Are you having a braking problem or just want more stopping power. And yes you wold have to go to 8 lug

01-12-2020, 03:08 PM	#3
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,854	Re: Can you convert 72 K10 front brakes to K20? What kwmech said. 1/2t 3/4t are the same knuckle to knuckle. Have to change spindles, hubs rotors, calipers and I think the outer axle stub shafts. Have seen talk about some D44's that have thicker axle tubes. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

01-12-2020, 03:40 PM	#4
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Can you convert 72 K10 front brakes to K20? You could install the 3/4 t booster for added braking power. Seems like guys that have gone this route have been pleased. Might be a useful first step. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

01-12-2020, 04:33 PM	#5
fishmunger Registered User Join Date: Jan 2005 Location: CA Posts: 411	Re: Can you convert 72 K10 front brakes to K20? Thanks guys. The reason I ask is I have been looking for a k20 for a couple years. Finally came across a clean k10 that I like a lot. I want to use the truck for work and need to be able to regularly tow a heavy 22’ boat (approx 6-7k lbs). I’m wondering if the k10 will be able to stop it.

01-12-2020, 05:19 PM	#6
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 16,242	Re: Can you convert 72 K10 front brakes to K20? Does the boat trailer have brakes? __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul

01-12-2020, 07:01 PM	#8
fishmunger Registered User Join Date: Jan 2005 Location: CA Posts: 411	Re: Can you convert 72 K10 front brakes to K20? Ok so youre saying leave the front axle but convert it to 3/4 stuff, and find a full float 14 bolt from a 80s chevy? The eaton axle that comes stock in most 72k20s is ff as well? I could put brakes on the trailer if i had to. But thats annoying cuz it sees constant saltwater use and the brakes never hold up.

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