1976 Pontiac Trans Am loss of driving control/steering/susp

1976 PONTIAC TRANS AM
Avatar
JG3931
  • MEMBER
  • 1 POST
Steering problem
1976 Pontiac Trans Am V8 Two Wheel Drive Automatic 80k miles

The normal rear ratio stock is 2.9 I had increased to 3.3(roughly) also stock motor is 400 I had rebuilt to 455 and the transmission upgraded from 350 to turbo 400 now when I accelerated quickly and let off the gas the car swerves drastically. A momentary loss of steering control. Like all the power pushes the car forward and then when I decelerate the whole car swerves the opposite of the movement the engine pushes(like engine mounting,loose, but affecting steering) Why could this be?
Jul 5, 2010 at 1:53 PM
Advertisement
Avatar
MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
With upgrades like these, you may need to install frame rails, these connect the front sub frame to the rear, your body is probably twisting upon acceleration.
Jul 6, 2010 at 9:52 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.