About 2 years ago I rebuilt my entire front suspension with OEM bushings and stock 6 cylinder springs in front. I have an aluminum head 383 in the car now and believe it or not the car sits about 1" higher than I like in front.
I also would like to get better weight transfer when drag racing - when the track gets a little slick the car is impossible to hook up.

I run CE adjustable drag shocks in front (which I might change as well) and fairly stiff 5 leaf springs with SSM lift bars in back. Ride height is stock in back. I race with 27x11.5x15 Hoosier Quick Time Pros.

The entire car weighs 3120 lbs with fluids toppped off, don't know how much of this is over the front wheels.

I am currently looking at QA1 springs and 12 way adjustable shocks or possibly Moroso "trick" front springs. Any ideas on which ones?

Thanks for any recommendations.

eric, I cut the front springs on my camaro because it sat to high ,when I did mine I measured to see how much to high it was and then cut them that much but it screwed them up.It seems if you take off the exact amount on the spring or 1 inch like I did after I reinstalled them and they settled with the weight of the car they were to short. so take off about half of what you want if you do this ,or if your car is 1 inch to tall only take off 1/2 inch and reinstall and they should be about right. Well just a story that something that happened to me

You can always take the car to a moving company and have them weight it for you, a nominal fee of $5 is charged. Do both axles total weight, then each axle itself.

Moroso has three spring rates and they catalog them as to what changes have been done to the car, i.e., battery relocation, fiberglas hood, f/g front end, etc. This would be the cheapest route, the springs are only $75/pr thru Summit, I think. Moroso even suggests in the instruction sheet to "trim" the height for the weight transfer. I use them, p/n 47140, and they work well on my 11.90 car.

General ride of thumb: You cut a spring, it stiffens up. One coil out roughly equals 1 inch in height reduction.

Thanks guys. I might go try to weigh it front-back tonight at the local trucking company.

I wanted to avoid cutting springs for the exact reason you mention Everett - I think they do stiffen up and that's not what I want to do. I THINK stiffer springs would hurt weight transfer but am not sure.

Yes, one wants the momentum of the transfer.

But, all of this motion is power lost in forward motion. Look at a 4-link car, instant movement.

Eric
I am in the process of building an aluminum head small block 68. Last fall, I got a pair of the Moroso trick springs (47140). I cut off one coil and installed them. One side was VERY stiff, and the other side was somewhat stiff. I let the car sit all winter with an engine in it. The side that was not quite as stiff initially, seems to have settled a little bit. The side that was VERY stiff has not settled at all. It is still hard against the top rubber bumper. Even standing on the front of the car dosen't compress it too much. Now, I may have gotten a mis-matched pair of springs, I have no way of knowing. I am presently pulling these springs out, and installing a pair of Moog #6308's. I got this number off of David Pozzi's site. It is apparently the replacement for the Z/28 spring. At this point, I just want a functional set of springs, I'm tired of changing them (this is the third set). I can't tell you how well they will work on the drag strip yet. Hopefully soon though.

Thanks John. I hate changing springs too, sounds like you got a mismatched set. I might "leave well enough alone" for a bit and see how the car hooks once the track has been prepped. Its not really THAT high in front. It sits at 27" front, 28" rear with a 25" tire front and a 26" tire rear. That is measured from the highest point of the fender opening to the ground.

Please let me know how yours sits once you get your new springs installed. If you could measure from the ground to bottom of the fender lip that would give me a good general idea where the Moog springs would wind up on my car.

Thanks

Well, I got the Moog #6308 springs in earlier this evening. The fender height is around 28". This is with a 205-15 tire and no alignment. Also no hood or front bumper. I expect that they will settle down some eventually, so they will probably end up about where yours is now at 27" or so.

Thanks, BTW my fronts are 215-60-R15. I bet yours will settle an inch maybe more, mine settled about that after I went for a ride and hit some of those Michigan potholes. they will make anyone's car "settle". LOL

Eric,

I went with Eibach pro-kit springs through Summit. They lowered my car about 1-2". They went in without a spring compressor. This spring is a progressive rate spring. They cost about $130.00. I don't know how they will perform, the car is still in a million pieces.

I also used the Z28 replacements and am at 28" through the centerline of the wheel <25"tall tire>


I want to cut them and have been to busy with the "Hunny Do List"