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Topic Review (Newest First)
09-20-2019 01:30 PM
u2slow
Quote:
Originally Posted by PROJECTJUNKIE View Post
I guess the question is, was the "heavy" arm the same d350 piece in 1988
Essentially yes - I have the 'heavy' suspension on my '75 D300 crewcab also. 92-93 there's a doubler plate in the upper arm. They certainly didn't re-invent the suspension for the cummins. It's not even as sturdy as the 73-87 C20 suspension IMHO.

Agreed on 94+... they basically adopted a more 'GM style' short/long arm setup.
09-20-2019 12:55 PM
PROJECTJUNKIE I guess the question is, was the "heavy" arm the same d350 piece in 1988 when gas trucks lived short relatively easy lives before the motor blew. Maybe they beefed them up for the diesel, but regardless, they did improve them for 94+, LCAs are a non issue, plenty of 400k trucks chugging along
09-20-2019 12:05 PM
u2slow
Quote:
Originally Posted by PROJECTJUNKIE View Post
Not really a stretch, they had a control arm that was built for a 360 that might last 100k, then they put it under a MDT engine and peeps start using these trucks, 200k hard miles later something isn't right
2 different suspensions... the 'light' 3000/3300# suspension in the D150 and most D250s. The 'heavy" 3830/4000# suspension used on D350 and cummins D250. Has a stronger and deeper lower arm, taller coil spring & shock, bigger balljoints, and bigger TREs.

But essentially the same strut rod setup with rubber bushings throughout.
09-20-2019 11:49 AM
PROJECTJUNKIE
Quote:
Originally Posted by u2slow View Post
It's possible. Its not a rugged suspension. I put fresh coils in and still have a lean.

Be a fluke if they both bent the same amount eh?
Not really a stretch, they had a control arm that was built for a 360 that might last 100k, then they put it under a MDT engine and peeps start using these trucks, 200k hard miles later something isn't right
09-20-2019 11:12 AM
u2slow
Quote:
Originally Posted by PROJECTJUNKIE View Post
I know this is probably a dead thread, but weren't these known for bending LCAs? That'd cause front end sag
It's possible. Its not a rugged suspension. I put fresh coils in and still have a lean.

Be a fluke if they both bent the same amount eh?
09-20-2019 10:52 AM
PROJECTJUNKIE I know this is probably a dead thread, but weren't these known for bending LCAs? That'd cause front end sag
08-23-2019 08:11 PM
K9Kodi
Quote:
Originally Posted by Frodo2222 View Post
Have a 93 with the 5.9 and the front is sagging pretty much! without going toa lift kit but replacing the front sagging springs i've heard it raises the front about 2 inches I found that there is a spring spacer..anybody ever put this as well with new spring to get to 3-4 inches..and if so is there any modifications that need to be done to the front end to make it drive ok..mine is a 2 wheel drive

If you did this, did it work well. AND are they easy to put on?
I don’t know what your budget is. To get back to stock height you should address the worn out coil. If you want to add 1-2 inches run a spacer on top of a stock coil. Or just bite the bullet and buy a 1-2” lift coil for a 2wd.
08-03-2019 11:22 AM
u2slow Might be tough without a compressor. YMMV.

I was just barely able to close up the suspension using only a floor jack when I swapped in the 7226S coils on their own.
08-03-2019 09:58 AM
Frodo2222
Quote:
Originally Posted by u2slow View Post
As with just about any SLA suspension, too much lift ends in camber problems you can't adjust out.

I put the Moog 7226S coils in my '90 D250... gained some height, ride is fine. Should have been the stock coil, IMO.

EDIT: I don't consider the Dodge suspension especially robust, so I'd be cautious how far I'd push it. I'd rather use square-body chevy IFS, or any beam style axle for a beefy 2wd solution.
So ended up getting the 1906 specialty 1 inch spacers for a 2.5-3 inch lift..anyone put these on just by compressing the springs or is it absolutely necessary to take apart the whole suspension just to get this spacers in? they are 3/4 circle so they should go around the stuff in the way like shock shaft etc
11-27-2018 11:59 AM
u2slow As with just about any SLA suspension, too much lift ends in camber problems you can't adjust out.

I put the Moog 7226S coils in my '90 D250... gained some height, ride is fine. Should have been the stock coil, IMO.

EDIT: I don't consider the Dodge suspension especially robust, so I'd be cautious how far I'd push it. I'd rather use square-body chevy IFS, or any beam style axle for a beefy 2wd solution.
11-23-2018 01:43 AM
total newb I put spavers in my 2wd 99 to lift the front up to fit some 225/19.5. My truck was super heavy with a winch/bu.per and utility body. Now that i have the body off its not to bad but it was noticably stiffer when i originaly did it
11-22-2018 11:35 PM
Frodo2222
Front coil or spacers or BOTH?

Have a 93 with the 5.9 and the front is sagging pretty much! without going toa lift kit but replacing the front sagging springs i've heard it raises the front about 2 inches I found that there is a spring spacer..anybody ever put this as well with new spring to get to 3-4 inches..and if so is there any modifications that need to be done to the front end to make it drive ok..mine is a 2 wheel drive

If you did this, did it work well. AND are they easy to put on?

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