Hey, My car is in storage so I can't just go outside & look to check whether my control arms use round or oval bushings. The car has the original front-end components. It's a '71 Siylark Custom Convertible. Does anyone know which bushings my car would use? Thanks, Jay
All the references and catalogs always say you can have round or oval bushings???????????????? I have never seen oval in any 70-72 Buick.
Oval lower A-arm is most common in Cutlass models for some reason....never could figure out the advantage having an oval instead of a round one.
The oval bushings are in the rear of the lower control arm for a reason. As a hole is hit in the road, the lower arm tries to deflect rearward in a sideways, twisting motion, the smaller round bushings do not deflect as much, so you (the driver) get a jolt. The larger oval shaped bushings provide greater cushioning and therefore comfort.
Have hauled in & parted well over 500 A-bodys & '69-72 GrandPrixs & '70-72 Montes & the oval bushing style is the most prominent style used on '68-72 Chevys, Pontiacs, & Olds. IF Buicks are all supposed to have the big round version, they were not used on the last 4 '68-72 Buick A-bodys I've processed. On all the 70-72 Pontiac A & G bodys I've parted, & have now as project or parts cars, none came with the large round version bushing style lower control arm. Got Posi? :3gears: Roger
I've got a question about this too. When a bushing is referred to as being oval, is it the outer shape of the bushing where it goes into the the control arm that is oval, or is it the interior shape where the sleeve/bolt goes through the bushing? I wouldn't imagine it being the interior, but I've never seen an oval one so who knows. I'm getting ready to order the bushings for my front end and would hate to get the wrong ones and then have to send them back and wait some more.
My GSX has both round on the drivers side and oval on the passenger side, but its been abused during its life and was probably changed.
