C4 handling
Thread Starter
2nd Gear
Joined: Jan 2001
Posts: 2
Likes: 0
From: Island Park, NY USA
C4 handling
I own a 94 Coupe and want the car to handle better in and out of turns. Your thoughts on lowering the car with a lowering kit and installing larger sway bars front and rear with polyurethane bushings. :confused:
Burning Brakes
Joined: Feb 2000
Posts: 1,111
Likes: 0
From: Philly burbs PA
Re: C4 handling (RichF)
There are a couple of things you can do. One is to replace the sway bars with bigger ones. The best solution for this is to buy the largest bars that were available on a C4, the Z07 bars, 32/26mm solid, from GMparts direct for about 160 pair shipped. The bars will help eliminate body roll. Second you could revalve your shocks from bilstein for 35 or 40ish a shock, to whatever custom valving your heart desires, but you would either have to down your car or buy temporary cheap shocks. You could lower you center of Gravity by lowering your cars, I would start there at first. Of course there is the autoXer answer of learn how to pick an apex to a curve and heal/toe down shift/accelerate through it, which is a good way starting point if you don't already know. I think your 94 is probably stiffer then my 96, and i am planning on the shocks and swaybar combo for my handling needs. :cheers:
Safety Car
Joined: Jul 2001
Posts: 4,178
Likes: 2
From: Windermere FL
Re: C4 handling (DSTJ99)
http://vette.ohioracing.com/
Check out this link. Pretty comprehensive. I don't know if he covers lowering but supposidy lowering the rear will increase your handling in curves but give you less downforce at over 125+. Depends what you want. :cheers:
92TripleBlack
Check out this link. Pretty comprehensive. I don't know if he covers lowering but supposidy lowering the rear will increase your handling in curves but give you less downforce at over 125+. Depends what you want. :cheers:
92TripleBlack
Team Owner
Joined: Mar 2001
Posts: 30,856
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Re: C4 handling (92TripleBlack)
Glad I read this...
THE KNOCKING NOISE
Gee what's that knocking noise?. The motor blew right at the finish line of an autocross event in the middle of nowhere Michigan. Of course right at the height of race season and one day after I had just spent big bucks on 4.09 gears. I broke my vette and Al Murrel, a fellow competitor, hauled me home. Thanks Al! You have an invitation to co-drive my car! Also, I owe thanks to John & Debbie Fessler, and Paul Wines for hauling my tire trailer home.
A word of warning, 6200 RPM is the Limit for a stock LT1. I set my rev limiter to 6400 RPM against the advice of Justin Vandersall (Superman Vette Mechanic). The motor lasted for maybe 10 revs at that limit. The LT1 rod caps can not take high RPMs. The cap on the number six cylinder stretched. The piston began to slap against the head when down revving. As soon as the engine cooled the bearing spun.
Gee what's that knocking noise?. The motor blew right at the finish line of an autocross event in the middle of nowhere Michigan. Of course right at the height of race season and one day after I had just spent big bucks on 4.09 gears. I broke my vette and Al Murrel, a fellow competitor, hauled me home. Thanks Al! You have an invitation to co-drive my car! Also, I owe thanks to John & Debbie Fessler, and Paul Wines for hauling my tire trailer home.
A word of warning, 6200 RPM is the Limit for a stock LT1. I set my rev limiter to 6400 RPM against the advice of Justin Vandersall (Superman Vette Mechanic). The motor lasted for maybe 10 revs at that limit. The LT1 rod caps can not take high RPMs. The cap on the number six cylinder stretched. The piston began to slap against the head when down revving. As soon as the engine cooled the bearing spun.
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: C4 handling (Coach D)
I did the bigger anti-sway bars and poly bushings. We left the rubber bushings where the anti-sway bars mount to the frame to put in a little more give.
It corners like it's on rails. It used to be a bit frightening going around a rough corner at any speed, now it's just fun.
I didn't go any lower, I scrape the front air dam too much as it is. (And when my wife parks the car, I swear she does this on purpose, basically pulls into a parking space and stops when she hears a crunch :mad .)
It corners like it's on rails. It used to be a bit frightening going around a rough corner at any speed, now it's just fun.
I didn't go any lower, I scrape the front air dam too much as it is. (And when my wife parks the car, I swear she does this on purpose, basically pulls into a parking space and stops when she hears a crunch :mad .)
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: C4 handling (John Row)
I noticed increase handling after I lowered mine... I dropped the rear 2 inches and the front almost 1.75. Sway bars are next in the handling department for me.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: C4 handling (DSTJ99)
There are a couple of things you can do. One is to replace the sway bars with bigger ones. The best solution for this is to buy the largest bars that were available on a C4, the Z07 bars, 32/26mm solid, from GMparts direct for about 160 pair shipped....
Eric
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Burning Brakes
Joined: Feb 2001
Posts: 882
Likes: 0
From: Chicago, IL
Cruise-In II Veteran
Re: C4 handling (silver & red CE)
I have 30 and 26 going in shortly with a 1 inch drop in rear as well as an RD racing Crossbar. I will report back but I am expecting the car to be transformed.