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Re: Front Shocks, Springs upgrade - '74 B200 Campervan
Sparkynm #736840 May 31st 2018 4:16 pm
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Well then it's the local spring shop (Westshore Spring & 4X4 here in Victoria). Also need to get a wheel alignment done. And yes, a steering dampener wouldn't hurt either.

Re: Front Shocks, Springs upgrade - '74 B200 Campervan
wrcsixeight #736929 June 03rd 2018 10:42 am
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Originally Posted by wrcsixeight
Some 7 years ago or so i replced he coil spring in m 89 b250 with Moog 7272 from the existing 7270 spring thickness(thinner). I was thinking it might ride too stiff.

It does not.

I have KYB gas-a-Just shocks which are known to be a stiff shock.

I think My van handles quite well now.

I thought the pre 78's used a different length coil spring as they had a different suspension geometry, but could certainly be wrong



Last month I did exactly this upgrade on my 91 B250, and replaced the factory sway bar bushings with Moog poly bushings, and installed a moog steering damper. I haven't done the control arm bushings yet but it already rides and handles worlds better! It was quick and easy too, only took about 2 or 3 hours on a Sunday morning.

Also for the orginal poster. If you don't have a good local spring shop to rebuild your rear leaf springs, a air bag set up is pretty quick and easy. I installed an Air Lift spring set on the back of my B250, with 10psi in the back empty and 20+ with people it really made a big difference. No more rear end sag and bounce! I'd still like to get a rear sway bar, but that's going to be a down the line/if at all thing at this point. I should replace the leaf spring shackle bushings though.

- Rich


1991 Dodge B250 Zephyr Conversion. "Bi-frost" 89,000-ish original miles and counting.
- 318TBI; has headwork and other bolt on upgrades. Runs strong and smooth!
- Powertrax locker
- 3" aluminum radiator.
- Rear air springs, rebuilt suspension, steering stabilizer.
Re: Front Shocks, Springs upgrade - '74 B200 Campervan
SFP #737316 June 15th 2018 5:06 am
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I went with air bags on the back as well - very pleased.

Just going back to the original post, in case anyone runs into this question again. SFP said:

"Shock wise I'm thinking the Bilstien 4600 (not sure if I want the upto GVW 8400, or the over 9000).
Bilstein 4600 GVW 9000lbs SKU 24-014014 -- (this might be overkill)
Bilstein 4600 GVW 4000 to 8300lbs SKU 24-184632 -- (this I suspect is the standard replacement)"

I don't think those shocks are interchangeable - the first one is for the 4,000lbs front axle which I think is a longer shock; the second one is for front axle up to 3,800lbs. I guess the first one probably is a heavier duty shock than the second but the second one is not "standard replacement" (ie. not like OEM).

Just in case that helps anyone :-)

Re: Front Shocks, Springs upgrade - '74 B200 Campervan
wrcsixeight #737353 June 17th 2018 1:07 am
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Originally Posted by wrcsixeight

I thought the pre 78's used a different length coil spring as they had a different suspension geometry, but could certainly be wrong


You're right. pre-78 had a different lower control arm design and used shorter springs w/o isolators.--> 1978 front end rebuild
Using Moog 7270 or 7272 (instead of 7170 / 7172) and isolators will give some lift over stock height. Then, getting the rear springs re-arched and/or adding a leaf to level out the van sounds like the way to go.





Last edited by nomade; June 17th 2018 1:08 am.

"Hey, I like that paint job you got. What they call that-sorta a cross between Piss Yellow and Puke Green, ain't it?" - Bob Falfa
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