Quote:
Originally Posted by Formulajones
On driveline angles, and maybe you already know this....
Typically on a street driven car you want the trans pointing 2-3 degrees downward, and the rearend pointing the opposite at 2-3 degrees upward.
If drag racing there are other things to consider on rearend angles but I won't get into that here.
Generally on an A-body 4 link you won't be able to change driveline angles unless you have adjustable control arms. Easier on a leaf spring car with angle shims at various degrees. On yours, if it's never been messed with back there you'll probably find the rearend is already pointing upward a degree or two at ride height.
I've also found on many overdrive swaps such as the TKO's when using aftermarket cross members and/or aftermarket poly trans mounts the driveline angle changes quite a bit from where it would have been and some modifications are necessary to reacquire the angle you're looking for.
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The TKO 600 takes up just about all the space in the tunnel so getting the tail up some took some shimming of the factory x-member. And I installed adjustable BMR upper control arms. When I checked the angle I had front tires resting on ramps and the rear on jack-stands at the axles. Not sure if that's enough to simulate it on the ground but the car was level.
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Will Rivera
'69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears
'69 LeMans Vert, 350, #47 heads: work in progress
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