1973 Pontiac Firebird Formula 455-SD

[Paul Ceasrine]

Jeff Lee,

You are correct.

The 1973 Formula SD-455, came though with 'Standard' 3.08 Gears
if the car was equipped with Air Conditioning.

You could order the Code #G92 'Performance Axle' {3.42 Gears} as an
option on the A/C equipped Formula SD-455.

Just how my sister's car got the Code #CG {3.73 Gears} was baffling,
because it was not on the Pontiac 'available option list'.

Not that it was a big deal at the time, as we never dug into the
"Who and How' it got that set of 3.73 Gears.

Later we were told that Lockwood Motors Pontiac, who were also
Pontiac Racers, performed a Dealer Installed 'option'.

Maybe the 3.73 Gears were placed 'in the trunk' from the Factory.

Though I'm a Mopar Guy, that Formula SD-455 was a sharp looking car,
and easy to drive.

Tuned up, and with the A/C and P/S belts removed, I'm positive
that car with 3.73 Gears could run 'Nuts On' 13.00's.