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Author Topic:   ride heighths and %
hoosier transplant
Dirt Maniac

Total posts: 104
posted May 10, 2005 06:27 PM  
I've finally got my car together and was scaling it out. I started to jack the springs to get cross and left at a desirable %(at least for what I've got to work with). I got 52% LEFT AND 47.8% CROSS WITH 47.8% rear. That's the best % I've ever been able to get with this car.(84 Monte) My concern is that my ride heighths are not very good. 6 1/8 RF, 8 1/4 RR, 6 3/4 LR, and only 4 1/2 LF. I ran out of time when scaling or I would have tried this while on scales, but if I put equal number of turns in both LR and LF will my % stay the same? Or is the left side being that much lower than right not a problem? I don't have much choice right now because I'm out of town until late afternoon Friday. So other than getting home and hauling to the track is about all the time I'll have. If I can help it by jacking left side, I can always do that at track. I know I should know all this but my mind is kind of frazzled with all the trashing I've been doing getting car ready. Thanks for all the help. Have fun and be safe.

Dirt Forum Racer

Total posts: 94
posted May 10, 2005 08:45 PM  
My point of reference is the holes in the bottom of the frame at each corner. I asked the same type question a couple of weeks ago and here is what I was told and it worked well for me. The left front should be no lower than 7". I have the right front 1/4" higher with the left rear at 7" and the right rear at 7 1/4". I have the rear higher than the front but could not get the rear percentage. Dropping the rear moves that weight to the back. The rear lower trailing arms are level.

Left should be around 52%
Rear should be around 52%
Cross should be between 50 - 52%

Hope this helps

Steve Dupree
Dirt Freak

Total posts: 316
posted May 11, 2005 05:42 AM  
Hey there Donavan with all the checking we have don that left rear is to low and you need to up that cross weight to atleast 50. That rear % is not good at all for all the motor you have add some weight to the very back even if guessing add 50 lbs as far back and a little left you could use a little more left side anyways. You will change that cross when you raise that left rear and when doing that you will need to raise that right front because of the left rear raising.Shout for something like 7 lf 7 1/2 lr 7 1/2 rf 8 rr or something close could be a inch lower on all but you will get more roll over with those settings but fix that left rear. So glad you got the car together and see ya at the track saturday if you race EP friday good luck

Dirt Maniac

Total posts: 195
posted May 11, 2005 02:09 PM  
The only thing you can change with jack bolts is crossweight. The left, right, front, rear percentages stay the same unless you physically add or move weight around in the car. That would be done by adding ballast or moving battery further to rear etc. The scales may show a slight change in rear and left (when you make a wedge adjustment) but this would be due to suspension bind (friction) but it won't move very much. Make sure your shocks are unhooked too

Dirt Full Roller

Total posts: 53
posted May 13, 2005 03:50 AM  
With 11" springs and LF has a 215-70-15 & RF 225-70-15 My front heights are now RF 6" & LF 6 1/4 To me that seem low is this right or do I need to change something?

Dirt Forum Champ
Total posts: 968
posted May 13, 2005 04:17 AM  
lf 7 rf 7 1/2
You are too low and backwards on yur ride heights.


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