The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > All 4x4 Tech & Off Roading > 4x4 Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-13-2011, 01:21 AM   #26
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

It's been in the family for years.

I've been playing with a few different boot configurations and didn't find what i was looking for so I've decided to stay with the current set up. The boot and shifter i have will work when i install the twin stick so long as i adjust the rod lengths a bit. I'm wanting to go with a 40-20-40 split bench so i'll recess the jump seat a bit for clearance. It should work out.

Have you sprayed yours yet Larry?
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Old 01-14-2011, 01:55 AM   #27
DirtyLarry
Windy Corner of a Dirty Street
 
DirtyLarry's Avatar
 
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,926
Re: Steve's tinkerings

Quote:
Originally Posted by snj8198 View Post
It's been in the family for years.

I've been playing with a few different boot configurations and didn't find what i was looking for so I've decided to stay with the current set up. The boot and shifter i have will work when i install the twin stick so long as i adjust the rod lengths a bit. I'm wanting to go with a 40-20-40 split bench so i'll recess the jump seat a bit for clearance. It should work out.

Have you sprayed yours yet Larry?
That should work. If anything else, the AA shifter will make a good billyclub to keep under your seat.

Nah, not yet. Got to finish up the floor repair first. The Rhino appointment is loosely scheduled for Friday the 28th.
DirtyLarry is offline   Reply With Quote
Old 01-14-2011, 03:29 AM   #28
MTCK
Registered User
 
MTCK's Avatar
 
Join Date: Dec 2009
Location: Fairbanks, AK
Posts: 1,830
Re: Steve's tinkerings

Very cool truck. Great bumpers - should keep Bambi out of the radiator.
Posted via Mobile Device
__________________
-Marcus

1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's
1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow
2022 Silverado 3500 L8T
Project Daily Driver
Project Heavy Hauler
Project Plow Truck
MTCK is offline   Reply With Quote
Old 01-14-2011, 07:31 AM   #29
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

Quote:
Originally Posted by MTCK View Post
Very cool truck. Great bumpers - should keep Bambi out of the radiator.
Posted via Mobile Device
Thanks, they do pretty good. The front push bar is actually a large L shape of 3/8" that services as the backbone for the whole bumper. I cut the tip of the frame horns off so the L brackets actually engage the frame a full 10 inches. If i hit something big enough to bend the bumper i'm going to have bigger issues somewhere else.
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Old 01-14-2011, 09:04 AM   #30
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

I addressed my worn out rear brakes yesterday.

Off with the old

Name:  disk brake pics 001.jpg
Views: 354
Size:  51.3 KB

On with the new

Name:  disk brake pics 005.jpg
Views: 354
Size:  56.1 KB

The conversion was fairly painless. First i pulled the drum and backing plate off. From the front of the drum i used an air hammer and drove the studs out freeing the hub. Bearings and seals looked good. The rotors used in the conversion are 1973-1987 3/4 ton fronts found on Dana 44's and Corp 10 bolts. I lined up the new rotors to the hubs and rattled the wheel studs back in replacing any that looked ruff.

Next I bolted the DIY4x caliper brackets to the backing plate brackets on the 14 bolt positioning them 45* to the rear. Then i installed the new disk/hub assembly and torqued the spindle nuts.

Calipers used are also from 73-87 3/4 ton fronts. I used non ebrake calipers which there are two to choose from. The difference is the banjo bolts used for the hoses. From what i found 73-78's use SAE banjos and 79-87's use metric. I used 7/16" SAE here. Load the pads in the caliper and bolt them on the brackets using the supplied hardware.

I had one slight hiccup in the process here. One of the DIY brackets was bent too shallow by about 1/16" which ended up being enough to not allow the caliper to clear the mounting tabs and slide over the rotor. I made sure the piston was pressed all the way into the caliper but it still wouldn't fit. So I made a quick trip to the local alignment shop for shims. A 1/16" alignment shim behind the caliper bracket bolts brought the bracket into position for the caliper to properly fit over the rotor.

Lastly I installed my brake lines, bolted in the axles, bleed the brakes, and slapped the wheels back on.

Currently i am running a 1 ton brake booster/master cylinder combo and an aftermarket proportioning valve that is designed for both disk/drum and disk/disk combos. I may have some questions about this later today as there might be proportioning bugs to work out. I'll monitor the braking action as im running errands. I'll address that as i experience it and seek advise. All around though i hope the conversion performs as well as it looks.
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Old 01-14-2011, 12:54 PM   #31
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Steve's tinkerings

The one thing stopping me asside from having the spare cash is the proportioning valve and plumbing it. My luck it would become a headach!
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
swamp rat is offline   Reply With Quote
Old 01-14-2011, 02:00 PM   #32
propanemudtruck
Local Redneck Authority
 
propanemudtruck's Avatar
 
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 584
Re: Steve's tinkerings

Nice work, would you mind, how much did the swap cost total?
__________________
-Kevin

four on the floor feel the beat in your soul
movin to the rhythym pumpin til ya cant take no more
dance if you want to do what you came to
you cant ignore the feeling of that four on the floor
propanemudtruck is offline   Reply With Quote
Old 01-14-2011, 02:26 PM   #33
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

Quote:
Originally Posted by propanemudtruck View Post
Nice work, would you mind, how much did the swap cost total?
$90/rotor x 2
$45/loaded caliper x 2
$65 DIY4x brackets
$50 hoses and misc

= umm.. carry the two.... about $385. Forgot shipping on the brackets so closer to $400.

This would not have been an economical swap if but for two reasons:

1: Both the shoes and drums were completely shot and needed replacing. A quick guess on price for New Napa Premium Drums, shoes, and adjuster hardware kit would be roughly $275-300 for both sides.

2: There was no proportioning valve in the truck when i bought it years ago so i put in the disk/drum disk/disk prop valve in anticipation of replacing the rear drums with disks when they wore out.
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Old 01-15-2011, 06:54 PM   #34
Chevymaniac
Registered User
 
Join Date: Feb 2010
Location: Kitimat, British Columbia, Canada
Posts: 234
Re: Steve's tinkerings

Really nice job on the truck, i like how you made the truck even better than stock and yet it is still a capable dialy driver without going extreme.

Where did you mount your proportiong valve and how difficult was the mod?
Chevymaniac is offline   Reply With Quote
Old 01-16-2011, 10:04 AM   #35
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

Quote:
Originally Posted by Chevymaniac View Post
Really nice job on the truck, i like how you made the truck even better than stock and yet it is still a capable dialy driver without going extreme.

Where did you mount your proportiong valve and how difficult was the mod?
Thanks for the compliments.

The proportioning block is in the stock location. It looks almost stock but it had a provision to remove a small spring loaded valve when the user wanted to switch to 4 wheel disks. Are you thinking this was an adjustable proportioning valve for adjusting bias on the rear brakes? I may still need to do that, just don't know yet. Need to drive more.
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Old 01-18-2011, 12:37 AM   #36
Chevymaniac
Registered User
 
Join Date: Feb 2010
Location: Kitimat, British Columbia, Canada
Posts: 234
Re: Steve's tinkerings

Are you thinking this was an adjustable proportioning valve for adjusting bias on the rear brakes? I may still need to do that, just don't know yet. Need to drive more.[/QUOTE]

Yes, i thought you had an adjustable one installed. Did you get your current one at the parts store?
Chevymaniac is offline   Reply With Quote
Old 01-18-2011, 06:25 PM   #37
snj8198
Registered User
 
snj8198's Avatar
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
Re: Steve's tinkerings

no i ordered away for it. It's been so long and i don't have the receipt but regardless it looks just like this critter:

http://www.classicperform.com/Store/...ods/PVKU-4.htm

IIRC there is a valve and spring under the black boot that a guy can remove or tinker with that switches this prop valve from disk/drum to disk/disk capable. But I gota do my homework yet before i go monkeying with mine since i lost that receipt and there is not a part number on mine.
__________________
Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
snj8198 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:18 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com