[Paul Ceasrine]

Peach,

The Barracuda 383 Formula 'S' came first.
The 1967 Plymouth Barracuda Service Manual,
printed on November 25, 1966 lists
all general information on the 383.

The 1967 Dodge Dart Sales Brochure from January 1967
states that the Dart GTS 383 will be available in February 1967.

Nr. Norm's Grand Spaulding Dodge was the first to install (drop)
a 383 in the Dart GT.
But he was not the first to install a 383 in an A-Body.

The Chrysler-Plymouth Engineers did it 2 1/2 months before Mr. Norm's
performed the conversion.

Added information;
The size of the dual exhaust piping was 2 1/4" at the exhaust manifold.
From November 1966 thru April 1967.
Some cars experienced excessive exhaust heat, which affected the brake fluid
within the master cylinder.
Also, a higher ratio of cars developed fouling of the spark plugs, due to the inadequate
exhaust distribution.

Later in the 1967 production year (May and June), the pipe was expanded 3/16"
(approximately 10%), to 2 7/16" for improved exhaust flow.
The result was improved exhaust flow, and less heat build-up within the exhaust manifold.
Though the 383/280HP horsepower remained the same (in print), the later production
model year cars had a +15 horsepower gain.

All Dart GTS 383's were assembled at Hamtramck, not at Mr. Norm's.

In total, '457' Dart 383 big-blocks were built for the 1967 Dart GTS 383.
Automatics; 228
Manual 4-speed; 229

Of the '457' 1967 Dart GTS 383's built, only '30' (6.8%) were convertible.
Automatics; 17
Manual 4-speed; 13

All cars came equipped with 3.23 Sure-Grip posi-rears.
All engines came equipped with chrome valve covers.