I home someone can help. I am rebuilding my front suspension. When I cam accross my drivers lower control arm. Aparently, The bushing was so wasted that the bolt was working its way through the control arm. I need to know what years are interchangable? I would asume pontiac and olds may work. Any info on this topic would be appreciated Tahnks

What year and car? I believe all 70-72 suspensions were the same. I know my 71 GS convert has the same control arms and suspension as my 70 Elky SS 396. I could be wrong but I cant see why GM would have had different parts for different cars since most of them were all the same body style or body family.

68-72 will interchange for sure. "A" Bodies such as cutlass, lemans, monte carlo, skylark, etc.

Thanks 1967 chevelle> Duh! I forgot that.

From "THE Chevelle ONLINE INTERCHANGE MANUAL: CHASSIS SECTION"


CONTROL ARMS (FRONT)
Most of the control arms for the 1964-72 Chevelle interchange, and the lower control arm used for the front suspension had these distinct features.

*One version was produced from 1964-66, and utilised 1.90" (1 5/16") diameter bushings. There are two arms used from 1967-72, and the category includes the LCAs with round bushings (1.625" diameter), commonly found on 1968 (all models) or 1969-72 vehicles like Chevelle SS, Pontiac GTO, Oldsmobile 442, and the Buick GSX. Most of the lower control arms used on the other A-cars had oval bushings.
*The bushings described in the lower arm are located in the rear pivot area (the TRW or MOOG manual calls this the rear control arm bushing) on both sides of the car.
*All oval bushing arms, 1.90", and 1.625" round bushing arms (1 5/8") manufactured used a 1 3/8" (1.375") diameter front bushing.
*The lower arms interchange as an assembly, regardless of the spring diameter that distinguishes 1964-67 and 1968-72 front springs. You can use a later arm on early models (1964-67), but I have not heard of a 1.90" lower arm used on a later A-body.
Note: the lower arms may differ, in case a replacement or factory mismatch are common when locating the correct lower arm for a restoration. The only problem with oval bushings is that the existing bushing cans will have to be reused, and aftermarket companies that use solid or Del-A-Lum (a Global West product) bushings as replacements might require locating a set of round bushing lower arms, either a 1.90" or 1.625".
*Upper control arms for Chevrolet Chevelles and El Caminos use crossshafts that used bolts to secure the cup washer to the bushing. BOP A-Bodies used crossshafts with threaded ends with locknuts. Due to the possibility of frame spread, MOOG or TRW manufactures an offset control arm shaft that allows the camber angles to be corrected via OEM specs.

Thanks for that. I guess if locating from a yard of parts. I will have to match by eye.