Rear springs for pulling

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Rear springs for pulling

Postby BHD » Mon Sep 13, 2010 2:53 pm

I am finally getting my '78 W200 put together for pulling. I had to find a good frame and lucked acrossed a 1990 W250 CTD that was being parted out. I bought the frame and both axles for a really good price. The only problem is that it has a Skyjacker 6" lift kit on it. I plan on pulling the front springs out and replacing them with stockers, but what about the rears??? I would like to ditch the factory block and run a big spring pack but I thought I would ask you guys first. Any suggestions?
1990 W250, 185K, 727 to G360 conversion, 3.07's to 4.10's, straight piped, BHAF, 2.5" Skyjacker springs, Autometer gauges, 285 Cooper STT's,
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Re: Rear springs for pulling

Postby pulltilbroke » Mon Sep 13, 2010 7:07 pm

If your gonna be blocking the rear suspension you can get away with fewer leaves but this is what I run.

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90 W250 reg cab, Modified knuder valve, reversed reciprocting dinglearm adjusted, High volume flux capacitor,upgraded whirlygig, A clutch and a hitch
93 W350 ext cab dually, getrag and a few adjustments
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Re: Rear springs for pulling

Postby BHD » Mon Sep 13, 2010 7:38 pm

I plan on running street class or big block showroom, so no suspension blocks or ladder bars. I was thinking of buying two sets of 1 ton spring packs and combining them.
1990 W250, 185K, 727 to G360 conversion, 3.07's to 4.10's, straight piped, BHAF, 2.5" Skyjacker springs, Autometer gauges, 285 Cooper STT's,
BHD
fuel pin?
 
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Location: BFE, PA
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Re: Rear springs for pulling

Postby pulltilbroke » Mon Sep 13, 2010 7:51 pm

Is this gonna be strictly a puller, if so use as many full length leaves as possible and clamp them.
90 W250 reg cab, Modified knuder valve, reversed reciprocting dinglearm adjusted, High volume flux capacitor,upgraded whirlygig, A clutch and a hitch
93 W350 ext cab dually, getrag and a few adjustments
pulltilbroke
14mm rotor
 
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Re: Rear springs for pulling

Postby ahale2772 » Wed Sep 15, 2010 5:17 am

ive got 2 one ton sets in the rear of my truck ...or atleast 1.75 ton its surprisingly good
84 CCLB W350 project
94' W350 Dually, Diesel, Auto 1080HP/1980FTlbs
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Re: Rear springs for pulling

Postby BHD » Wed Sep 15, 2010 7:51 pm

yeah, that's my plan. I figure on building a BIG spring pack and doing away with the blocks. And yes I plan to clamp them, and I am running a 33" tire.
1990 W250, 185K, 727 to G360 conversion, 3.07's to 4.10's, straight piped, BHAF, 2.5" Skyjacker springs, Autometer gauges, 285 Cooper STT's,
BHD
fuel pin?
 
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Joined: Tue May 22, 2007 11:23 am
Location: BFE, PA
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Re: Rear springs for pulling

Postby stax25 » Mon Jan 03, 2011 2:55 pm

i have a pulling truck and the rear is blocked and it hops no matter what i try. Could the blocking be the cause. and if so should i just go with the the stacked leaf spring and do away with the blocking.
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Re: Rear springs for pulling

Postby KTA » Mon Jan 03, 2011 7:23 pm

Don't tell anybody but at one time I helped build a gas chevy pulling truck for the street class. They didn't allow traction bars or blocked suspension. I welded bracing to the rear spring perches off the frame and we took a cum along and pulled the springs down into the perches with the hangers removed. It pretty much made the truck solid suspension in the back as it had to bend the frame to compress the springs with the rear pivot gone. It hopped prior to that even running blocks, but never did it again after that! :-) Since it preloaded the hell out of the springs it also prevented axle wrap so it fixed the driveshaft angle as well.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
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Re: Rear springs for pulling

Postby stax25 » Mon Jan 03, 2011 8:25 pm

I think I will try it with out the blocks and clamp the leaf paks and see how it goes. before i turned it into a pulling truck i hauled 4 1/2 tons of pea grave in it and all it did was level the truck out.
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