I'm thinking about lowering my car with a set of lowering springs,I don't want to much of a drop (1 1/2 to 2 inches all around),And i was wondering if this would change the way the car leaves the line when it's drag raced.Will lowering springs help my take-off or hurt it?

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82 firebird with 305H.O.,Block bored .30 over,Keith black hyperutectic flat top pistons for 10 to 1 compression,Turned crank,Magnafluxed connecting rods,Melling H.V. oil pump,and double roller timeing chain,Ported and shaved heads w/3angle valve job,Z-28springs,Summit push rods and comp cams magnum roller rockers,Ported Edelbrock performer r.p.m.intake,Carter 625 afbcarb,Accell spark plugs,wires,and H.E.I.super coil,Heavy duty cap and rotor,Clevite performance cam with 450-460 inches of lift,Comp cams lifters,700r-4 tranny rebuilt with trans-go rebuild kit,corvette servo,New torQue converter,Flowtech headers,Flowmaster muffler,3.73limited slip rear end,Energy suspension bushings from front to rear,Energy suspension tranny mount,New center link,ball joints,trans-am steering box,Hopeing to run good times when i FINEALLY do get to the track!!

 

I'm not 100% sure, but I think that the lowering of the car will have its performance enhancements mostly in the cornering (it will also look better, of course). However, new springs whether they lower the car or not, should help your launch on the strip.

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'86 IROC-Z
305 LG-4, T-5
T-Tops
50k Original Miles
K&N Air Filter
Stage I Chip
KYB Shocks/Struts
Centerforce Dual Friction

 

If you lower it far enough, you can screw-up the rear suspension geometry. After I lowered mine, my 82 developed a severe wheel hop problem. LCA relocation brackets fixed the wheel hop.

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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro

 

Here is my brief technical explanation

Strait line acceleration will suffer if you lower your car. Lowering the car affects more than just the geometry of the suspension. Lowering the car also effects its center of gravity, which is going to effect weight transfer. When cornering, ideally it is best to minimize weight transfer to keep the load on each tire as close as possible. But when drag racing in a rear wheel drive car, you want as much weight transfer as possible to put the maximum amount of weight on the rear tires.

Look at how a serious drag car's front end rises off the ground. The center of gravity is being raised, more weight is being transferred to the rear wheels, and the car gets more traction and therfore accelerates faster.


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87 IROC 350, 3:42 Torsen, pocket ported 083 heads, complete Edelbrock exhaust, Most free mods, Most little mods, aluminum d/s. Edelbrock STB, SSM sfc's, boxed rear suspension pieces, urethane bushings everywhere.
Stock cam, chip, runners, base, and trans
13.94@103mph, 2.25 60'
In the works: ported SLP runners, ported base, Xtreme Cam, homemade suspension pieces, and 27x10 Hoosiers.
Goal: 12.999