Post all of your Modified Tech Questions here!

Good afternoon,

I'm new to modified racing, but not new to racing as i've spent the last couple of years in the Street Stock and Sportsman division in Virginia.

I {purposely} bought a swing arm car because #1) the tracks that I race are rough and stay rough/tacky throughout the evening, #2) for ease of adjustability in both pre-race set up and finesse adjustments in the pits, and #3) overall value for the price. My power plant is a SBC 377 that's dyno-ed at 625 hp, a Bert transmission (not the ball spline), and a floating Ford 9" rear end. I also run 26.5 / 27.5 x 8 x 15 Hoosier with a soft compound with about three inches of stagger right to left.

I've got a coil over slider bar on the left with a 250# spring married to a 9" Integra 94 shock. The right side is my swing arm and I've got a 175# spring with the same Integra 94 shock.

The previous owner of the car insisted that the car handled better when the left side coil over slider bar was mounted with the spring on the top of the slider bar while the right side coil over slider bar had the spring on the bottom. So, when there's tension on the right side spring the recoil is going to pull the right rear tire up. When there's tension on the left spring the recoil is going to push the left rear tire down. It does seem that this set up may promote more axle articulation because of the continuous push and pull on the axle. What's the advantages and disadvantages to inverting the spring location? What's the advantages/disadvantages to inverting the shocks? What do you recommend running with respect to the spring locations -- both up; both down; one up and one down?

Next, I've got two sets of shock and coil spring slider mounts. The inner set is located on the inside of the chassis and when mounted the shocks and coil slider bar point inward, basically at the ten and two o'clock positions. The outer set of mounts tend to true the shocks and coil over slider bars and they point toward 12 o'clock position relative to the chassis. What are advantages/disadvantages to angle mounted shocks/slider bars versus straight up and down mounted shock/slider bars?