early 80's style front brake compatability? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hotrod70C10 · 01-25-2003, 07:44 PM

I was wondering if any of you had any info on what I will need to convert my truck to 5 lug discs. I've got a truck I can pull everything off of for free at my buddy's grandfather's salvage.
Thanks guys!

Dean23 · 01-25-2003, 07:49 PM

If you dont have the engine in your truck take the whole front cradle. I usesd on from a 79 and it fit right in I just drilled a hole on each side and had to oblong another one on each side. It took no longer than 1 hour

Hotrod70C10 · 01-25-2003, 07:52 PM

Thanks dean! I'm not going to have my motor out until later on in the spring but I can wait until then if it will be easier on me.

Dean23 · 01-25-2003, 08:03 PM

It took us longer to get buddies 79 on the auto transport then it did to swap the two front ends in and out. Now I just have to figure out where I can buy a 5 lug rear end.

Hotrod70C10 · 01-25-2003, 08:09 PM

another ? dean, what exactly comes off when you drop the cradle?

Dean23 · 01-25-2003, 08:16 PM

Undo the bolts from the frame i think there are 4 per side, then take the linkage off the pitman arm. When you do it this way you get upper and lower cont arms linkage spindles rotors hoses etc. If you dont have a swaybar take that as well.

Hotrod70C10 · 01-25-2003, 08:19 PM

sounds good did you have to get another proportioning valve for the front brakes?

Dean23 · 01-25-2003, 08:21 PM

yes the prop valve as well, you will also need a disc drum master cylinder as well.I am also going to modify the new style mototr mounts to fit as well. The new style towers are about 1.5" to tall so I need to modify them to use the newer stronger motor mounts.

Hotrod70C10 · 01-25-2003, 08:29 PM

alright, I just went out and looked at my truck. I only see 2 bolts per side just above the springs right next to the motormounts. Am I looking at the right bolts? If so where are the other two per side

crazy longhorn · 01-25-2003, 08:38 PM

There should be 3 bolts through the bottom side of the frame rail on ea side, & I think 2 per side through the side of the rails. Then the eng mount stand bolts, idler arm(2), sway bar (4), & 1 big nut on the pitmanarm........Im runnin on memory tho.....

crazyL

Hotrod70C10 · 01-25-2003, 08:44 PM

I'll have to look at my truck again in the light. Thanks dean thanks crazyL! I'll get back to you guys if I have any other questions if that's ok with you guys. Thanks again

01-25-2003, 07:44 PM	#1
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	early 80's style front brake compatability? I was wondering if any of you had any info on what I will need to convert my truck to 5 lug discs. I've got a truck I can pull everything off of for free at my buddy's grandfather's salvage. Thanks guys! __________________ 70' C-10 LWB Fleetside 4.5/6 drop

01-25-2003, 07:49 PM	#2
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	If you dont have the engine in your truck take the whole front cradle. I usesd on from a 79 and it fit right in I just drilled a hole on each side and had to oblong another one on each side. It took no longer than 1 hour __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

01-25-2003, 07:52 PM	#3
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	Thanks dean! I'm not going to have my motor out until later on in the spring but I can wait until then if it will be easier on me. __________________ 70' C-10 LWB Fleetside 4.5/6 drop

01-25-2003, 08:03 PM	#4
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	It took us longer to get buddies 79 on the auto transport then it did to swap the two front ends in and out. Now I just have to figure out where I can buy a 5 lug rear end. __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

01-25-2003, 08:09 PM	#5
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	another ? dean, what exactly comes off when you drop the cradle? __________________ 70' C-10 LWB Fleetside 4.5/6 drop

01-25-2003, 08:16 PM	#6
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	Undo the bolts from the frame i think there are 4 per side, then take the linkage off the pitman arm. When you do it this way you get upper and lower cont arms linkage spindles rotors hoses etc. If you dont have a swaybar take that as well. __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

01-25-2003, 08:19 PM	#7
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	sounds good did you have to get another proportioning valve for the front brakes? __________________ 70' C-10 LWB Fleetside 4.5/6 drop

01-25-2003, 08:21 PM	#8
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	yes the prop valve as well, you will also need a disc drum master cylinder as well.I am also going to modify the new style mototr mounts to fit as well. The new style towers are about 1.5" to tall so I need to modify them to use the newer stronger motor mounts. __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

01-25-2003, 08:29 PM	#9
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	alright, I just went out and looked at my truck. I only see 2 bolts per side just above the springs right next to the motormounts. Am I looking at the right bolts? If so where are the other two per side __________________ 70' C-10 LWB Fleetside 4.5/6 drop

01-25-2003, 08:38 PM	#10
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	There should be 3 bolts through the bottom side of the frame rail on ea side, & I think 2 per side through the side of the rails. Then the eng mount stand bolts, idler arm(2), sway bar (4), & 1 big nut on the pitmanarm........Im runnin on memory tho..... crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

01-25-2003, 08:44 PM	#11
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	I'll have to look at my truck again in the light. Thanks dean thanks crazyL! I'll get back to you guys if I have any other questions if that's ok with you guys. Thanks again __________________ 70' C-10 LWB Fleetside 4.5/6 drop

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