Front brake conv. ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kaycee · 01-13-2021, 05:20 PM

OK looked at the FAQ section and never noticed any ?? on using any of the brake parts from the vans or is it a total different suspension.My neck of the woods its hard to find 2 wd stuff ,but I know where a van is sitting

Keith Seymore · 01-13-2021, 06:24 PM

Just be careful.

The van parts are a little lighter duty than the 2wd pickup parts.

That is: a G10 van is like a super light C10; a G20 more closely resembles a C10 squarebody.

K

kaycee · 01-13-2021, 10:20 PM

OK Thanks

**Captainfab** · 01-13-2021, 10:51 PM

I would suggest a G20 van for a disc brake upgrade. The few that I have seen have a different LCA shaft than a C10 Squarebody. Be aware that the G series van steering boxes will not work for a power steering conversion if the box is mounted almost vertical with the pitman arm to the rear and pointing down. Those boxes turn the opposite of a pickup box.

kaycee · 01-13-2021, 11:02 PM

Yeah thats what I was wondering so are the K10/20 steering boxes a good choice ?

**Chevy Fleetside** · 01-14-2021, 11:16 AM

Just get some later model spindles and ball joints. You can find them on RockAuto.com if you like. Here I used 75 model spindles on my truck. Shows parts also. http://www.67-72chevytrucks.com/vboa...isc+brake+swap

kaycee · 01-14-2021, 08:51 PM

You guys are awesome , Chevy Fleetside I read your post last night and thought Hell Yeah wasn't looking toward the engine removal for a complete crossmember swap at all maybe I can score some of these parts on my budget. Did you go with the same year 75 for the booster?

**Captainfab** · 01-14-2021, 10:33 PM

NO. You can not use a K series steering box and pitman arm on a C series truck. The box casting is the same but the sector shaft is different.

Quote:

Originally Posted by kaycee

Yeah thats what I was wondering so are the K10/20 steering boxes a good choice ?

Just call me Sean · 01-15-2021, 12:36 AM

I thought the G20 spindles are pretty much the same as the C10. I was looking at how to lower my G20 and people use the C10 drop spindles.

**Chevy Fleetside** · 01-15-2021, 12:49 AM

Quote:

Originally Posted by kaycee

You guys are awesome , Chevy Fleetside I read your post last night and thought Hell Yeah wasn't looking toward the engine removal for a complete crossmember swap at all maybe I can score some of these parts on my budget. Did you go with the same year 75 for the booster?

Capt fab has a bracket so you can use a later model booster. Using the mid 70's booster is kind of a pita to set up.

**Captainfab** · 01-15-2021, 11:14 PM

Thank you. There are many,many,many boosters that are compatible with all of my booster brackets. Just not the squarebody boosters. Those have the factory mounting brackets riveted to them

Quote:

Originally Posted by Chevy Fleetside

Capt fab has a bracket so you can use a later model booster. Using the mid 70's booster is kind of a pita to set up.

**MikeB** · 01-16-2021, 12:02 AM

Back in the day, I used 86 C10 spindles, rotors, and calipers on my 69 C10. But I also had to use a 73-87 C10 center link and tie rod ends.

Bought used spindles and center link for a song at a junkyard. Also found a used master cylinder, prop valve, booster, and mounting bracket from a 71-72 pickup.

That was around 25 years ago, when junkyard parts for our trucks were plentiful.

MPBrakes makes a complete kit for your 69 C10, but they are not cheap.

kaycee · 01-16-2021, 11:59 AM

What booster would be a good candidate for this ?

**MikeB** · 01-16-2021, 12:38 PM

Quote:

Originally Posted by kaycee

What booster would be a good candidate for this ?

The factory used a single 11" booster, but an aftermarket dual 8" will work.

A stock one would have looked like this but was spaced out from the firewall with a bracket. Master cylinder bore diameter was 1-1/8" with power. Manual was probably 15/16" or 1".

Here's a dual 8" setup from MP Brakes. They also make a dual 9". These guys make their own brackets using an actual firewall and pedal assembly in the process. Their pre- and post-sales support is second to none.
https://www.mpbrakes.com/booster-mas...m-booster.asp?

**MikeB** · 01-16-2021, 12:41 PM

Keep in mind that your engine will need to make at least 16" vacuum at idle for use with a vacuum booster. MP Brakes might even say 18" minimum for best performance.

kaycee · 01-16-2021, 02:08 PM

Awesome ,got the ol gal fired up yesterday it has a 350 in it,now I need to move on to brakes and trying to decide what to do .The master cly. is toast so may just jump over to the power disc setup . OK 1 more ? if I do the spindle swap to newer wont that make my front a little wider than the rear?

**MikeB** · 01-16-2021, 03:43 PM

Quote:

Originally Posted by kaycee

f I do the spindle swap to newer wont that make my front a little wider than the rear?

If there is any difference, I've never noticed it. 255-70x15 tires on 8"wheels. I'm talking about 73-87 spindles, center link, and tie rod ends.

gmc684x4 · 01-17-2021, 04:58 AM

I picked up a g20 last sumer I was thinking about using it for disc brake conversion cross reference spindles and a arms on rock auto listed them as the same
G20s also use the 1 1/4 hd brake rotor

Another member on here posted 73 77 elcamino inner tie rods with 73 87 outer tie rods will fit the 67 70 center link

I ended up with a complete 72 running gear for my build

**cwcarpenter98** · 01-17-2021, 05:56 PM

Quote:

Originally Posted by kaycee

OK 1 more ? if I do the spindle swap to newer wont that make my front a little wider than the rear?

Adding discs will push the track width out 1/4" on each side. That's just how the spindles are made. The later model trucks that came factory with discs also have a slightly wider axle to match up with the front discs.

The 1/4" extra on each side doesn't bother me at all. If it did, I would just add a 1/4" spacer to the stock rear end

01-13-2021, 05:20 PM	#1
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Front brake conv. ?? OK looked at the FAQ section and never noticed any ?? on using any of the brake parts from the vans or is it a total different suspension.My neck of the woods its hard to find 2 wd stuff ,but I know where a van is sitting __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

01-13-2021, 06:24 PM	#2
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,145	Re: Front brake conv. ?? Just be careful. The van parts are a little lighter duty than the 2wd pickup parts. That is: a G10 van is like a super light C10; a G20 more closely resembles a C10 squarebody. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

01-13-2021, 10:20 PM	#3
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: Front brake conv. ?? OK Thanks __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

01-13-2021, 10:51 PM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Front brake conv. ?? I would suggest a G20 van for a disc brake upgrade. The few that I have seen have a different LCA shaft than a C10 Squarebody. Be aware that the G series van steering boxes will not work for a power steering conversion if the box is mounted almost vertical with the pitman arm to the rear and pointing down. Those boxes turn the opposite of a pickup box. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

01-13-2021, 11:02 PM	#5
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: Front brake conv. ?? Yeah thats what I was wondering so are the K10/20 steering boxes a good choice ? __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 Last edited by kaycee; 01-13-2021 at 11:02 PM. Reason: Brain tumor

01-14-2021, 11:16 AM	#6
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,775	Re: Front brake conv. ?? Just get some later model spindles and ball joints. You can find them on RockAuto.com if you like. Here I used 75 model spindles on my truck. Shows parts also. http://www.67-72chevytrucks.com/vboa...isc+brake+swap __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

01-14-2021, 08:51 PM	#7
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: Front brake conv. ?? You guys are awesome , Chevy Fleetside I read your post last night and thought Hell Yeah wasn't looking toward the engine removal for a complete crossmember swap at all maybe I can score some of these parts on my budget. Did you go with the same year 75 for the booster? __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

01-16-2021, 12:02 AM	#12
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,420	Re: Front brake conv. ?? Back in the day, I used 86 C10 spindles, rotors, and calipers on my 69 C10. But I also had to use a 73-87 C10 center link and tie rod ends. Bought used spindles and center link for a song at a junkyard. Also found a used master cylinder, prop valve, booster, and mounting bracket from a 71-72 pickup. That was around 25 years ago, when junkyard parts for our trucks were plentiful. MPBrakes makes a complete kit for your 69 C10, but they are not cheap. __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

01-16-2021, 11:59 AM	#13
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: Front brake conv. ?? What booster would be a good candidate for this ? __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

01-16-2021, 12:41 PM	#15
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,420	Re: Front brake conv. ?? Keep in mind that your engine will need to make at least 16" vacuum at idle for use with a vacuum booster. MP Brakes might even say 18" minimum for best performance. __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

01-16-2021, 02:08 PM	#16
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: Front brake conv. ?? Awesome ,got the ol gal fired up yesterday it has a 350 in it,now I need to move on to brakes and trying to decide what to do .The master cly. is toast so may just jump over to the power disc setup . OK 1 more ? if I do the spindle swap to newer wont that make my front a little wider than the rear? __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 Last edited by kaycee; 01-16-2021 at 02:14 PM.

01-17-2021, 04:58 AM	#18
gmc684x4 Registered User Join Date: Jul 2012 Location: Whitehorse yukon Posts: 1,218	Re: Front brake conv. ?? I picked up a g20 last sumer I was thinking about using it for disc brake conversion cross reference spindles and a arms on rock auto listed them as the same G20s also use the 1 1/4 hd brake rotor Another member on here posted 73 77 elcamino inner tie rods with 73 87 outer tie rods will fit the 67 70 center link I ended up with a complete 72 running gear for my build



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