steering pull..is this normal?
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,296
Likes: 156
From: Clayton New Jersey
steering pull..is this normal?
I Have a 1977 Corvette 350/4 speed 3.70 rear. I recently had the motor re-build so it now has (estimated between) somewhere between 350 to 400 HP..my question is under heavy acceleration the car will pull to the left..example: driving along at any speed and you punch it with the RPM's up the car immediatly pulls to the left. It did this when the engine was stock with 180 HP but not as bad..going down the highway it tracks perfect until you punch it it goes to the left. Car has new springs, control arm bushings, upper and lower ball joints, KYB Gas-adjust-shocks and tie rod ends inner and outer..the rear has new spring and bushings. Thanks for your help, Bill
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,296
Likes: 156
From: Clayton New Jersey
Originally Posted by stingraysallie
Does it twist right when you decellerate quickly... ??
sal
sal
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,296
Likes: 156
From: Clayton New Jersey
Originally Posted by big_G
Take a close look at the rear trailing arm front bushings and shims. That is most likely the culprit. Any slop in them will cause a toe change on accel/decell. 
Trailing arms were checked when the alignmnet was done. I was advised that they were okay. I did at that time have to replace the two stabalizer bars the bushings were bad.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
is the front of your car also rising when this happens???? the cars steer differently when the suspension is rising then they do when it is flat.....this is why some guys put heavy springs in to stop or dampen the upward rising
Burning Brakes
Joined: Jan 2006
Posts: 876
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From: Same as our leaders Out of my mind
Hi, I experience the same phenomena, I have a 350 crate motor rated at about 390 hp. I have been told that it is "Torque Steer". The frame flexes when you jump on the gas, the front (left) wheel likes to lift up and you have to compensate for all of that twisting on
the frame.
the frame.
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Le Mans Master
Joined: Jul 2005
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From: Austin Texas
Originally Posted by HT1663WB
Trailing arms were checked when the alignmnet was done. I was advised that they were okay. I did at that time have to replace the two stabalizer bars the bushings were bad.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,296
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From: Clayton New Jersey
Originally Posted by bobs77vet
is the front of your car also rising when this happens???? the cars steer differently when the suspension is rising then they do when it is flat.....this is why some guys put heavy springs in to stop or dampen the upward rising
Thread Starter
Melting Slicks
Joined: Nov 2005
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Likes: 156
From: Clayton New Jersey
Originally Posted by big_G
Check them yourself. Use a flashlight and look at the bushings. They should be tight with no rubber squishing out of the sleeve. Alignment techs usually aren't familiar with C-3's.
I'll check them today.
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Melting Slicks
Joined: Nov 2005
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From: Clayton New Jersey
Originally Posted by abs-73
Just overhauled my L-48 been wondering about the H.P. on it. What did you do to yours to gain that much HP?
I pulled the motor and dropped it off to a local builder (Danny Smith) told him what I was looking for HP wise. 2 weeks later I picked the motor up he told me it would produce between 350 to 400 HP I still have to get it on a dyno. Im running the stock exhaust and the stock Quadrajet I don't think it's making that kind of power with that set up but it's making a bunch more then the stock 180 HP. Really puts you in your seat. If you want I can give him a call Monday and get the info for you.
Intermediate
Joined: Nov 2005
Posts: 36
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From: Boonville Missouri
Here is what I did to mine. G.M. high preformance cam, flat top pistons, which changed my compression from 8to1 to 9to1,Z28 valve springs. Also bored it out 30 over. Just wondered how this compared to yours.I still have the Q-Jet, auto trans. Not sure of the rear end yet.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,296
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From: Clayton New Jersey
Originally Posted by abs-73
Here is what I did to mine. G.M. high preformance cam, flat top pistons, which changed my compression from 8to1 to 9to1,Z28 valve springs. Also bored it out 30 over. Just wondered how this compared to yours.I still have the Q-Jet, auto trans. Not sure of the rear end yet.
I know for sure it was bored 30 over and the heads are now 202. I had a lot of options on the cam because of the 4 speed. I just told the builder to put in what he feels will work best. I did put an edelbrock carb on after the rebuild it felt really responsive and would fry the tires from a dead stop. I opted to put the Quadrajet back on because it feels like you get more of a hit. The car is not as responsive with the Quadrajet but I must say it makes some awesome noise when you open those big secondaries up.