CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
Pure Chevy Sex
- Thread starter cyclic
- Start date
Alright, ordered the brackets today and I've sourced a set of h3 rims. I'll collect the calipers and rotors as we go.
Might need spacers all around to run the H3 rims. People are telling me they have a huge off-set. The best I've found are the Blackrock 937 rims. But anything with a close to zero off set that also fit the H3 will work.
I looked it up, stock H3 rims have a 1.5 inch (38mm) off set.
So, couple thoughts....................... if your going with a 99-up Silverado rear axle, they will work fine, actually giving you a 1/2 wider than the stock square body axle. And about 1 inch narrower on the front. This is compared with a zero offset rim. If your not axle swapping the rear, look into a better rim choice than stock or be prepared to run 2" spacers front and rear. But you could probably run the stock H3 rims until you can get better ones, as they are only 7.5 inches wide.
So, couple thoughts....................... if your going with a 99-up Silverado rear axle, they will work fine, actually giving you a 1/2 wider than the stock square body axle. And about 1 inch narrower on the front. This is compared with a zero offset rim. If your not axle swapping the rear, look into a better rim choice than stock or be prepared to run 2" spacers front and rear. But you could probably run the stock H3 rims until you can get better ones, as they are only 7.5 inches wide.
Thanks! I forgot about the offset...
Hey Cyclic
what rim is this...? It's from post 19.
what rim is this...? It's from post 19.
Not really sure, picked them up used. They are 17x8 and appear to be a zero offset rim. They are sooooo close to fitting, but the pressed in holes just contact the caliper, requiring a 1/4 spacer to clear.
The Blackrock 937 rims with the 13mm offset, should fit perfectly.
The Blackrock 937 rims with the 13mm offset, should fit perfectly.
Thanks again dude. You rawk! It is so cool of you to share this, if we ever meet I'll buy you a beer!
I e-mailed Christian over the holiday. He said some 40% of his customers are now square body guys doing this swap. He also turned me on to a sweet rotor/brake pad deal and a set of calipers. I already have one caliper on the way, so I'll buy another next payday.
I e-mailed Christian over the holiday. He said some 40% of his customers are now square body guys doing this swap. He also turned me on to a sweet rotor/brake pad deal and a set of calipers. I already have one caliper on the way, so I'll buy another next payday.
Last edited:
y5mgisi
1 ton status
We need to find a way to make this work on the 8 lug trucks.
We need someone with the equipment to fab up a new adapter bracket...
If your serious about getting a 8 lug version, you'll have to spend some time and money. End of subject.
First step is getting this bracket set from Thor. Then you need to find a rotor that fits over the hub, look at late model straight axle fords, they should be close. Then you need to figure out which caliper will work and how to adapt it to the Thor bracket.
Now go do work!!!
First step is getting this bracket set from Thor. Then you need to find a rotor that fits over the hub, look at late model straight axle fords, they should be close. Then you need to figure out which caliper will work and how to adapt it to the Thor bracket.
Now go do work!!!
Alright, did a little leg work for you. I'm betting 90% likely to be a perfect starting point, BUT you will need to change to 17 in rims with this also. Remember this is about improving brakes and using modern components.
Get the Thor brackets. Then get a used set up (rotors, calipers, caliper mounts) from a 03+ Dodge 3/4 4x4. You will have to make adapters for the mounting them to the Thor bracket and get the spacing right. But this appears to be the way to go with eight lugs. I'd just mock it all up and see how close it is. I'm betting some flat plate and spacers, and your done.
Get the Thor brackets. Then get a used set up (rotors, calipers, caliper mounts) from a 03+ Dodge 3/4 4x4. You will have to make adapters for the mounting them to the Thor bracket and get the spacing right. But this appears to be the way to go with eight lugs. I'd just mock it all up and see how close it is. I'm betting some flat plate and spacers, and your done.
For all you guys rocking Dana 60 axles, found basically a similar conversion done on the 60.
http://67-72chevytrucks.com/vboard/showthread.php?t=463042
The basic idea is the same on the 8 lug 3/4 front. With the 10 bolt front the dodge rotors will probably be too deep, might need to go with the chevy rotors, and adjust your spacing accordingly.
http://67-72chevytrucks.com/vboard/showthread.php?t=463042
The basic idea is the same on the 8 lug 3/4 front. With the 10 bolt front the dodge rotors will probably be too deep, might need to go with the chevy rotors, and adjust your spacing accordingly.
All right... just picked up the opposite caliper...the word must be out, the prices have been steadily climbing...
Nice! I’m glad I got my calipers last year then because I think I only paid around $90/pair from a low mileage wrecked H3. Were you still planning on trying to figure out how to make them work with the 8 lug axle?
I just picked up a spare front axle so I can take my time freshening it up and doing this brake upgrade. Figure it’d be a lot easier to do with this axle by itself on some stands in my garage than working on the axle that’s already sitting under my K5.
In case anyone is interested, I found another option for the rear brakes as well. You can use the rear disc setup from a NBS truck (like the rear axle Cyclic used) and bolt it up to a 14 bolt semi-floater with either a spacer for the brake flange or just welding on a new brake flange a little further out (since the drum brake setup sits further in on the axle tube). Apparently those axles share the same mounting flanges and everything will swap right over once you get the brake flange in the right position. If your truck isn’t lifted and has stockish HP this might not be worth it but I’m doing an LS swap soon and plan on eventually running 35’s so I wanted to use something a little stronger than a 10 bolt. Here’s a good thread on the swap with several links to other swaps in case anyone is interested: http://www.performancetrucks.net/fo.../official-14-bolt-9-5-sf-truck-thread-467473/
I was really thinking about going to disk brake rear when I do the H3 front upgrade. My '12 Silverado has the 9.5 rear with disks so I have a functioning template to get my measurements off of. The brakes in that truck are phenomenal, I only hope that I can come close to them with this swap.
No, I'm sticking with the 6 lugs. This is a proven set up (thanks cyclic) now and I'm not messing with it. I also have a spare axle, I'm doing the swap on it along with a gear change, so it'll be ready when I swap in. Heck, I may even hold out for a crossover setup at the same time.
Out back, I'm hunting for a 9.5" 14bsf new style axle. I have a 9.5 in my '90 2500 and am more than confident it will be fine with what my plans are for my rig.
When I was researching the 14bsf in the NBS trucks I could only find them in the 1500HD and 2500LD trucks and they were all 8 lugs. The Silverado SS and Vortec Max trucks had a 6 lug version but they had drums not discs. The only newer ones that had 6 lugs with discs (that I could find anyways) were from the Express 2500's with the lighter 7300# GVWR but I could never confirm what their width was. Some sites said they were the same 67-68" WMS as the truck axles and other places said they were in the 70-72" range but I could never find one in person to confirm which was correct. I wound up finding a 6 lug 14bsf from a '92 OBS 4x4 with matching 3.73's pretty cheap on CL so I snatched it up. I already have the rear disc brake setup from my LS donor Yukon so I stopped researching other options as soon as I found that axle on CL.
Edit: Just went to car-part.com to check what the NNBS 1500's came with and sure enough the 6 lug 14bsf was an option but holy crap the yards are wanting $1000-1800 for those puppies. Makes me feel way better about my donor brakes and CL axle lol.
Last edited:
NNBS trucks only had the disk brake 6 lug 14bsf in 6.2L trucks including Denalis and Escalades. Though all the SUVs use a 5 link rear suspension and truck use leafs. Although I suppose that doesn't really matter because you'll be cutting and welding on new perches anyway.
I know I've been slacking (not really, just on truck work), so here's a little update......................
Brake conversion is still working well. Strongest brakes I've ever felt on a old truck, almost not even real they are so good. Got five Black ROCK 937 rims ready to go, waiting on money for tires. Also got some new 6 lug hubs for my trailer, so that when the new shoes go on the old ones can go on the trailer. 17 inch and six lugs for everything!
As far as the carport, all my recent efforts went to finishing it. Came out as well as I hoped! Next year is add some more driveway to connect it to the main drive.
And an inside shot showing the 72" outdoor fan and the multi color LED mood lights.
A place to work in the shade in Texas, PRICELESS!
Brake conversion is still working well. Strongest brakes I've ever felt on a old truck, almost not even real they are so good. Got five Black ROCK 937 rims ready to go, waiting on money for tires. Also got some new 6 lug hubs for my trailer, so that when the new shoes go on the old ones can go on the trailer. 17 inch and six lugs for everything!
As far as the carport, all my recent efforts went to finishing it. Came out as well as I hoped! Next year is add some more driveway to connect it to the main drive.
And an inside shot showing the 72" outdoor fan and the multi color LED mood lights.
A place to work in the shade in Texas, PRICELESS!
Last edited:
