Anyone use different spring rates up front?

[N/A 4V]

Right now I have 14" 175 coilovers up front. The car leaves straight but I get a slight twist as the drivers front tire is always 2 inches higher than the passenger tire. I'm swapping over to 14" 150's but I was wondering to offset the twist could I use a the 175 on the drivers side and the 150 on the passenger side? Its a street car so no cage but does have sub frames. Or just put the 150's in both? Thanks. -Mark

[gilsbachracecraft]

Just put the 150's in .When your on the brakes one side would dive more than the other applying more weight to that corner and pulling weight off the opposite corner.Could make for a scary ride.

[N/A 4V]

Just put the 150's in .When your on the brakes one side would dive more than the other applying more weight to that corner and pulling weight off the opposite corner.Could make for a scary ride.

Eww, Never even thought of that. That would be kinda scary. Thanks I'll put both of them in.

What about ride height? Should I keep the heights the same? I was think to put the passenger side 3/4" higher to try and offset for the twist? Would that work or not? -Mark

[gilsbachracecraft]

Staggering ride height and or spring rates would just be a bandaid for your problem.As you make more power the rearend is driven in the direction of the rotation of the torque applied.All cars have torque rotation,some more than others depending on power/swaybar/weight distribution/and chassis.Since the drive shaft applies that power to the housing it will rotate in the same direction up into the car.You may want to look into a high quality anti-roll bar.I am a true believer in bigger is better and the mounting points being well supported by the chassis.If you have one already you may want to look for a stronger one.A small amount of rotation is acceptable.

[N/A 4V]

Ok will do. I'll look for one. Thanks again. -Mark

[Rob G.]

Ok will do. I'll look for one. Thanks again. -Mark

Is the back end dipping on the passenger side? How is suspension on the rear? Anti roll bars work really good.

Off the topic, just wondering if you are running a stock 4v and what tranny? What is your best e.t. and at what weight?

Thanks

[N/A 4V]

Is the back end dipping on the passenger side? How is suspension on the rear? Anti roll bars work really good.

Off the topic, just wondering if you are running a stock 4v and what tranny? What is your best e.t. and at what weight?

Thanks

The rear setup is

box style upper and lower control arms polyurethane bushings non adjustable
stock rear sway bar
Eibach drag springs w/ airbag in right rear (~15psi)
Lakewood 50/50's

The rear doesn't dip. It used to lift hard and fast then fall on its face with the stock front end. Once I went tubular it would lift a little slower but the nose would carry much farther.

Yes still running the N/A stock longblock. Valve covers have never been off and still using stock T45 tranny. Best ET to date is 11.7@115mph. Race weight w/ driver was 3170. Just made a shortrunner intake for it and shooting for mid 11's. Not bad for a lil 281c.i. motor.

-Mark

[N/A 4V]

Well got the 150's in and new 26x10's put on and hit the strip last Sat. My 60fts Were worse that with my 175's and 3yr old slicks. I think since the 150's are softer my ride height was lower in the front and it I lost time trying to get the nose to lift to transfer the load to the rear.

My question is if I raise my ride height by compressing the coilovers more wouldn't that increase the stored energy thus once I hit the tires the springs "should" make the front lift faster and heigher? Thanks. -Mark