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Mustang II for 1.5 ton truck?
#1289324 Fri Nov 30 2018 03:23 AM
Joined: Nov 2018
Posts: 5
B
New Guy
I've been reading the Disc brakes for 1.5 and 2 ton trucks thread for a while and thought I would join in. I'm looking for the same solution as everyone else for my 1947 1.5 ton. Has anyone considered using the Mustang II IFS? I spoke with street rod engineering and they said they can build an IFS based on the mustang II for the big trucks. The only down side appears to be that it will lower the front end about 3 inches and you would have to find a hub/rotor compatible with 10 lug wheels.

I have called at least 15 custom chassis and suspension fabricators and so far street rod engineering is the only one that offers anything close to a "bolt on kit". I haven't had any luck finding a p30 at a reasonable price. I'm thinking I could have something custom built close to the same price of finding a suitable donor vehicle.

Last edited by Grigg; Fri Nov 30 2018 02:06 PM. Reason: Make a new thread

1947 Chevy 1.5 ton
Re: Mustang II for 1.5 ton truck?
BrandonB #1289464 Sat Dec 01 2018 03:01 AM
Joined: Nov 2010
Posts: 608
R
Shop Shark
Brandon,

A little bit of a long read. I'd be happy to speak to you about this kit. My number is listed below.

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=708681


Randy Domeck
Indianapolis Fabrications
rdomeck@me.com
Indianapolis, In. 46254
317-258-0039

Re: Mustang II for 1.5 ton truck?
BrandonB #1289478 Sat Dec 01 2018 04:24 AM
Joined: Nov 2018
Posts: 5
B
New Guy
Thanks Randy. It was a long read, but well worth it. I'm interested and will give you a call next week.


1947 Chevy 1.5 ton
Re: Mustang II for 1.5 ton truck?
BrandonB #1289524 Sat Dec 01 2018 03:29 PM
Joined: Jun 2011
Posts: 3,536
E
Shop Shark
There have been several articles here on putting disc brakes on the front, using modern P-30, etc. spindles; look through past articles.

Look at the Gross Weight of the systems one is considering using, to get an idea of what would work well, safely together.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Mustang II for 1.5 ton truck?
BrandonB #1289743 Mon Dec 03 2018 02:03 PM
Joined: Mar 2008
Posts: 1,982
W
Shop Shark
Brandon

FatMan makes an IFS setup based on GM 3500 components. I don't know what you're working on or you're goals.

The modern "MII" kits are way better than what they used to be, but I wouldn't put one under a Big truck. 1/2 or 3/4 ton they're good for, but that's it.


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket
Re: Mustang II for 1.5 ton truck?
BrandonB #1289798 Tue Dec 04 2018 01:31 AM
Joined: Nov 2018
Posts: 5
B
New Guy
Thanks Whitedog,

I'm working on a 1947 Chevy 1.5 ton. I want to keep the same look, but I would like to upgrade to disk brakes for better braking and simpler maintenance in the long run. I have just been wondering if an IFS would be worth considering. I don't really think the mustang II will get the job done for the big trucks, but I do like the idea of it. I think if an IFS can be done right, the drivability would be much better. I also like the idea of a "bolt on" kit because time is my least available resource right now. I'm just trying to decide which option will be the easiest and yield the best results for what I want. What I want...I want to drive the heck out of it.

I briefly looked at FatMan's site, but I didn't notice anything for the 1947 big trucks.

The truck's been in the family since new and in the barn for the last 45 years...It's time to get her back on the road! I appreciate any advice I get.


1947 Chevy 1.5 ton
Re: Mustang II for 1.5 ton truck?
BrandonB #1289810 Tue Dec 04 2018 02:55 AM
Joined: Jun 2011
Posts: 3,536
E
Shop Shark
Read Grigg's notes on putting disc brakes/P-30 spindles on old axles.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Mustang II for 1.5 ton truck?
BrandonB #1289822 Tue Dec 04 2018 06:15 AM
Joined: Mar 2004
Posts: 4,546
M
Shop Shark
Welcome to the Stovebolt wave

Don't do anything until you get it running and driving on the road. Adding all that fancy stuff the 1/2 ton truck get will most likely be a waste of time and money on your 1-1/2 ton, it will never handle like a sports car.

I've put over 30k miles on my 2-1/2 ton Fire Engine on stock suspension and my wife rides with me all the time, so it can't be that bad!

Mike B smile

Re: Mustang II for 1.5 ton truck?
BrandonB #1289852 Tue Dec 04 2018 03:12 PM
Joined: Mar 2008
Posts: 1,982
W
Shop Shark
If you look here on page 20-21 in the Fatman catalog, you'll see they call it the, "Extreme IFS," it's based on the 70's/80's GM truck suspension. Fatman.

I'll agree with what some others have stated. It may be worthwhile to get the truck running and driving before jumping into things. I didn't see what series you have, but it may be possible to swap components from other trucks get the ride and look you're after. The 4100 trucks share much of the same architecture with the 3800's, So swapping out front leaf spring packs, and or other suspension components may be possible. On the rear, you may be able to just take a few leaves out to get what you want.

The "Big Bolts" have wider front sheet metal than the 3100-3800 trucks. So, swapping out a complete chassis with a late model one is always a possibility. You see this done with early cab-over trucks and wreckers all the time.

Anyhow, it's you're truck, your decision. I hope we helped.

Chris


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket
Re: Mustang II for 1.5 ton truck?
BrandonB #1289974 Wed Dec 05 2018 05:50 PM
Joined: Nov 2018
Posts: 5
B
New Guy
I spoke with Fatman and they said they can build an IFS for this truck. However, they said the IFS would not be appropriate if I want to keep the truck as a 1.5 ton. They said their designs are geared more towards street rods. I'm not really wanting a street rod, I want to be able to use the truck as a truck so I'm probably going to eliminate the IFS as an option.

I have read Grigg's notes on the P30 axles a few times. I think the P30 would be a good option or possibly one of Randy Domeck's kits.


1947 Chevy 1.5 ton
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