1969-70 Pontiac Grand
Prix Differences The 1970 Grand Prix is often mistaken for a 1969 model. Other
times it is lumped together with the 71-72 Grand Prix. As a result,
the 70 GP suffers from an identity crisis. Many people prefer the
body style of the 69 over the 71-72 GP and when they cannot find a 69 GP,
they settle for some other body style not realizing that the 70 GP is 98%
the same as the highly sought after 69 model. Manual transmissions were
still available in 70 and actually continued on to 71. Below I have
listed some of the obvious differences between a 69 GP and a 70 GP.
These differences do not apply to the 71-72, because with these almost
nothing is interchangeable. You 71-72 GP owners, please don't take
offense. The 71-72s are beautiful cars. I just don't know as
much about them.
Grill - (orientation of and number of slats only)
Parking Lamps - (70 has side reflector, 69 does not)
Tail Lenses - (on 70, perimeter is painted grey, 69 is not) and they carry
a different part #
In 69, the rear side markers are reflectors only. In 70 they are illuminated
with lamps.
Inside Door Releases
Console lids are slightly different - 70-72 have push to open tabs...69
does not and key locks are in different locations
Lettering or Louver on lower portion of front fender
Lettering or Louver on sail panel
Optional engine in the 69 was the 428 cu.in./ or the 428 cu.in. HO/390hp
The 70 offered the high compression 455 cu.in./370hp (only year for high comp. 455)
Seat upholstery patterns
1/4 window mounting design with power windows is unique for early 69. Late
69-72 are alike.
1970 GP had the "J" or "SJ" designation on the trunk lid, 1969 did not.
1969 GP uses a vacuum powered door locking option, 1970 GP was electric.
Engine mounts - 69 engines had two mounting holes per side, 70 & up
had five.
