I set this display
up (see below) so you can see the difference between the two styles of
lower control arms. They fit 1970 thru 1981 GM F-Body cars.
The information listed
below is based on my "Hollander Interchange 43rd Edition" and "Hollander
Interchange 43rd Edition"
The first style lower
control arm (the one on the left) also had round bushings on
the front and rear of the control arm. The front bushing measured 1.42
inches, the rear measured 1.67 inches and the bolt hole in the bushing
had a thin walled metal sleeve with a bolt hole that measures .520 inches.
They are correct for :
Camaro 1970 thru 1976,
Firebird 1970 thru 1976,
Apollo 1975,
Century 1973 thru 1976,
Chevelle 1973 thru 1976,
Cutlass 1973 thru 1976,
Grand Prix 1973 thru 1976,
LeMans 1973 thru 1976,
Monte Carlo 1973 thru 1976,
Nova 1975 thru 1976,
Omega 1975 thru 1976,
Regal 1973 thru 1976,
Seville 1976,
Skylark 1975 thru 1976,
Sprint (GMC) 1973 thru 1976,
Ventura II 1975 thru 1976
The second style lower
control arm (the one on the right) had round bushings on the
front and rear of the control arm. The front bushing measured 1.68 inches,
the rear measured 1.92 inches and the bolt hole in the bushing had a thick
walled metal sleeve with a bolt hole that measures .590 inches.
They are correct for :
Camaro 1977 thru 1981,
Firebird 1977 thru 1981,
Cadillac DeVille & Fleetwood Brougham 1977 thru 1984,
Century 1977,
Chevelle 1977,
Cutlass 1977,
Grand Prix 1977,
LeMans 1977,
Monte Carlo 1977,
Nova 1977 thru 1979,
Omega 1975 thru 1976,
Olds 1977,
Omega 1977 thur 1979,
Phoenix 1977 thru 1979,
Regal 1977,
Seville 1977 thru 1979,
Skylark 1977 thru 1979,
Sprint (GMC) 1977,
Ventura II 1977
Although the arms appear to have the same configuration I would have to
believe they are not interchangeable with out modifications as the bolt hole
sizes are different in the bushings.
If you click the
pictures below they will enlarge
 |
 |
 |
 |
 |
In addition to the differences
listed above. There is a slight difference in the way the arms are
formed. There is a slightly raised portion on the rear of the "late"
arm that is not on the early arm. You can click on these pictures to get
an enlarged picture that this difference might be easier to see in a
larger picture. |
Additional pictures of arms
and their bushings
