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The biggest problem i've seen is some of the quick changes have a 4:11 ring and pinion so this requires a 40 point adjustment,6.50 in a 9 inch 6.90 in a quick change with a 4.11 ring and pinion,now...

Here is what we ran on a late model back in the late seventies,the R.R. was a 1/2 leaf (back half cut off with a chop saw) it also had a coilover mount on the backside of the leaf,we used a 225 if i...

Drop a plum bob (string) outside the L.R. frame, measure to the rotor we used 61/4 clamped 61/2 spring behind

If its hoosier UMP a straight bar to the outside of 2x2 bracket may be just what you need.

Yes they are.

I agree with everything that Demon88 said except the length,on UMP tires we can't get shorter than 36 out because we lose to much drive thats what works for us anyway the thing people sometimes...

Thanks to both of you,i'm comparing a late model 5th coil to a modified 5th coil which we have working real well.What I'M looking for in paticular is why we can't get shorter than 36 out,car is good...

I need a measurement from the motor plate back to the center of the axel tube at ride height,
thank you in advance

erm is correct we are 150 to 175 pds of LR,with the driver,this could be a great post if guys and gals would spit out some good info,I can tell you just about every thing that we wern't able to get...

If you can't get to 36 '' out from the center of the quickchange to the 5th coil spring, don't waste your time they may run them shorter 5th arms with the usmts stuff The UMP tires takes a longer...

JustAddDirt gives some of the best advice I see on here,I just wanna add to me alot of people have ended up with the 411 Ring and pinion in there quick change.If so you need to add 40 points to the...

I have heard a rumor,that K schrader has the new shaw with the lift arm and they call it a venom,like I said Its just a rumor as far as I know.

Some rules require the spring and shock be seperated on the LR,I think the dummy in front takes drive out but thats just my opinion.Something that may help is gas pressure in the LR shock 150 to 225...

The 2 comp and 14 rebound on the RF is on a lot of cars in the slick,we haven't much luck trying to run it on hooked up or bumpy tracks,The LR although there are plenty running the numbers you...

We have won the nationals with a 543 feature gear.

It should be in the 120 to 140 pds heavier on the LF for the clamped up cars,25 pounds bolted on the LF will help it early in the night.30 to 50 pounds of LR works for most on ump tires.

Is the LF wheel about 140 pounds heavier than the RF wheel ?

Make sure you know what the ring and pinion is,486 or 411 it will make a BIG difference on what gear you need.If you have a 9'' with a 650 to be the same with a quickchange with a 411Ring and Pinion...

More -J-Bar angle will make it tighter,moving the rearend to the left will make it tighter,and fliping your rear springs will help it on entry,brake floater on the right side is something you don't...

If you need drive but need it to turn from the middle off,first the 40/40 needs to go, an 8c 2r shock is what alot of people run,and I don't know your front stub or springs are but generally we have...

There is an easy way to do it,in the late 70's and earlier 80's Howe racing enterprisis made a weight jacker for the RF which was c-ock pit adjustable. I can't remember for sure if it was used with...

Call franklin we wasted a couple of nights not knowing there is a difference,and I can't remember all of what they told us but we started using the right gears the problem goes away,and u also have...

if you have a 486 ring and pinion you will be close with the gear recomended if you have a 411 ring and pinion go up on that gear 40 to 50 points 680 or so.

The 600 to 1200 pd spring has won many races on the clamped up Pierce car.And they don't last forever,changing them every 6th nite or so will get rid of forward bite problems if the problem is the...

I just noticed your RBB is 14 and the RRT is 17,if nothing you try helps put a 16 inch bar on the bottom on the RR that will loosen entry and sometimes center also.