4RCEPWRD

iTrader: (5)

Just got my Spohn SFC's installed and am looking for other upgrades and suggestions about ways to reduce squatting on my launches any suggestions??

AlkyIROC

Moving the suspension so that the instant center is above the anti-squat line (not possible with a factory suspension)

Installing adjustable rear shocks on a stiffer setting.

Installing LCA relocation brackets and move the LCA so that it's level with the ground.

4RCEPWRD

iTrader: (5)

can you use the relocation brackets if you dont lower the car? I was wanting to get some new springs and shocks but really didnt want the car to be lowered in the process.

Stevo

iTrader: (45)

Of course you could, many people drag racing highly suggest it.

Im guessing most of the squatting is due to poor old shocks and prolly a combination with the springs. You can replace both without lowering your car.

4RCEPWRD

iTrader: (5)

your probably right theyre just some old monroes and the springs i have no idea how old they are, i was going to go with some bilsteins but have no clue on which springs to get?

Stevo

iTrader: (45)

moog springs, im not sure how to find the correct ones you want, maybe someone else can chime in and give ya some part #s. Id suggest real stiff Iroc/Z28 springs.

Sonix

iTrader: (1)

stock rear springs are moog
cc635 (cargo coils)
or 5665's I think. 5665's are straight ratio. I don't think there's a very stiff rear spring available as a factory piece. Not sure what other vehicle springs would fit on the axle perch and in the pocket right...?

I have the cc635's and they're good.
a set of the 635's, and KYB gas-a-justs would work well. I wouldn't think bilstein is a drag racing type of shock, more of a corner carver, don't think it's really what you want... :shrug:

LCA relocation brackets, and stiffer LCA's i'd suggest. You can get both from spohn for a pretty good deal, as far as bang/$$$.

4RCEPWRD

iTrader: (5)

thanks for the input on the bilsteins i hadnt heard that before, i guess i need to research some others, by the way do you have the part number for the KYB gas-a-justs?

Stevo

iTrader: (45)

just type them in anywere you will find them for sale. I think they are like almost $80 for the pair and are a great deal. I put a set on my gf's car and man are they stiff! Great cheap shocks. Your local auto parts store prolly sells them. If not summit does and a few of our sponsors off to the side.

4RCEPWRD

iTrader: (5)

any suggestions for the struts?

askulte

More anti-squat will raise the back of the car on launch. That's how lowering the rear of the LCA's affect things. A shorter torque arm will also increase the anti-squat. Keep in mind too much anti-squat will cause brake hop if you autox/road race.

4RCEPWRD

iTrader: (5)

thanks I was kinda wondering about the torque arm and if that would reduce it also guess that answered my question though, but it should be good the Z's not gonna see any autox or anything like that bout the closest thing to that is gonna be a few of these winding Arkansas roads but thats it, just mostly strip

intex1982

iTrader: (2)

will rear air shocks work for stiffing?

AlkyIROC

No because they act like a stiffer spring not a stiffer shock.

cajunnola

I heard of some drag racers puting a air bag in the right rear and just airing it up at the track. Don't know how well it works.

cajunnola

??

xpndbl3

iTrader: (5)

yes the air bag helps with chassis twist, but an anti-roll bar setup is a better choice for 100% drag car.

Shagwell

As xpndbl3 said, the use of an air-bag is to counter body roll on acceleration. And, yes, as he said, a properly sized/adjusted anti-roll bar is the better/proper way to correct this problem.

The easiest way to lessen/eliminate squat is with lca relocation brackets, but with cheapy shocks and springs, it's band-aid. Always start by replacing old/worn items first, then address geometry.

91_5.7_TPI

iTrader: (2)

Are you wanting the car to handle and launch, or are you just after drag times?
The bad thing about the KYB, at least from what I've heard, is that they wear out pretty fast.

antman89iroc

I installed LCARB's on my Iroc and it's at the stock height. I have them so the front bolt is about 1 inch higher than the rear. It doesn't have a lot of squat on launch and, at least at the strip, has no wheel spin even with street tires! I am not sure to what degree they help but they sure haven't hurt. BTW I added sub frame connectors and boxed the stock control arms when I added the LCARB's. I would recommend all the above to anyone with a third gen. I don't have any of the problems a lot of members report like wheel hop, ill handling or traction problems. Last time out it went 8.74 1/8mi with a basically stock 350. (well stock ++)