Join Date: Apr 2000
Location: Columbus, OH, USA
the tranny in my '78 was rebuilt earlier this year with a shift kit installed. now under medium accelleration it really slams it into gear, and under hard acceleration it smokes the tires. I have a really high rear end ratio (2.41 posi) so this makes it even harder on the car. after some hard use now when I floor it going into second at 40-50mph, upon shifting, the car squirms really hard, it seems as if the left of the car is forced to the right a little bit. Instead of a crisp jolt forward on shift, it is really mushy, & I feel uneven body sway and it makes the body roll to the right. At first I thought I had broken the main leaf spring where it bolts in to the diffential. I looked to see if there were marks on the spring of movement ft. to rr. and no sign there except for on one of the secondary springs, looked like it may have been moving a half inch or so. now I'm thinking I may have sheered off the locator pin that goes through the center of the springs up and down where they bolt in.
I'll probably try with a new set of leaf springs first, but I just want to make sure it's nothing structural or serious. is this a possible symptom of a broken rear tranny mount? I broke one once before, this was prior to the shift kit.