1975 Vega GT Project PART 1 [No Music]
The documentation of my 1975 Vega GT being transformed from a 4cyl
automatic, 4 lug car to a 350 sbc , muncie 4 speed, ford 9" 3.50 gear, long
tube header/dual Exhaust.
This is only the first half of the project.
To avoid copyright infringement there is no music
Barn find vega big block 1st run at the drags
barn find vega 1st run at St Thomas raceway park Shifter wasn't working
very well last run got 3 gear and run 11.99, then fixed the tach was 2000
rpm fast was shifting @7000 the tach read. but was only at 5000 just
starting to work oh well next year .
Ranger Drag truck ET 10.25.mpg
St Thomas Raceway Park test and tune and slow hot day long weekend . got
lots of runs best was 10.25 good day Jay has the track hooking good . Now
if i can get that bounse thing fixed ANY body know why it doing that ???
Chevrolet Vega Drag Racing Racelegal.com 12-16-2011
check out this 1972 chevrolet vega on the 1/8 mile at racelegal.com making
a tuneup pass
.The Chevrolet Vega is a subcompact automobile produced by the Chevrolet
division of General Motors from 1970 to 1977. Named after the star Vega,
GM's first U.S. mini-car was produced in two-door hatchback, notchback,
wagon, and panel delivery body styles all featuring an inline four-cylinder
engine with a lightweight, aluminum alloy cylinder block.
Initially well-received by buyers and the motoring press, the car sold well
against the AMC Gremlin and Ford Pinto subcompacts and imports including
Toyota, Datsun and Volkswagen. By 1974 it was among the top ten
best-selling American cars.
The Cosworth Vega, a short-lived limited-production performance model with
a reduced-displacement but more powerful all-aluminum inline four-cylinder
engine, was introduced in March 1975.
In early Vegas, engine problems and fender corrosion harmed GM's reputation
for build quality. The faults were remedied by recalls and design
upgrades. A three-year sales decline led to the car's cancellation at the
end of the 1977 model year
The Vega was conceived in 1968 to utilize newly developed all-aluminum
die-cast engine block technology -- the first sand-cast aluminum blocks had
preceded the decision to build the car by two years. A relatively large
displacement engine with good low- speed torque was decided on. gear ratios for low engine rpm
would achieve economy. Engine testing totalled 6,000,000 miles. The
pre-test version was installed in a Fiat 124 sedan for development of the
aluminum block, while several 1968 Opel sedans were used for drive train
Chevrolet instituted a new management program, the car line management
technique, which made it possible to produce the all-new car in two years.
The chief vehicle engineer had overall charge of the program. 50 engineers,
dedicated to the design of the entire car, were divided into groups: body,
power train, chassis design, product assurance, and pleasability. The
latter would check continuously on the vehicles on the assembly line, with
computers in another program monitoring quality control of every vehicle
built. Fisher Body engineers and draftsmen moved in with the Vega
In October 1968, there was one body style (the "11" style notchback sedan),
one engine, one transmission (MB1 Torque-Drive manually shifted two-speed
automatic), one base trim level, a bench seat, molded rubber floor
covering, no glove box or headliner and no air-conditioning (ventilation
was through the upper dash from the wiper plenum). As the program went into
development, the market changed, as did the product.
December 1968: Hatchback, wagon, and panel delivery styles added; also
floor-level ventilation, and an optional performance engine ("L-11"
two-barrel) which, predicted as 20% of production, accounted for 75%.
Bucket seats were standard. Hatchback and station wagon received carpeting
and headliners. Optional Air conditioning, predicted as 10% of production,
rose to 45%.
February 1969: Opel three- and four-speed transmissions (three-speed
standard, others optional); Powerglide also added (now four transmissions);
mechanical fuel pump replaced by in-tank electric pump; power steering
option; base "11" style Notchback trim upgraded to match Hatchback and
Wagon carpet and headliner.
April 1969: Gauge-pack cluster, HD suspension, wide tires; adjustable seat
back (45% of production); bumpers restyled, lower valance panels added;
swing-out quarter window option (10% of production).
July 1969: Electrically heated backlite option (10% of production); "GT"
package, $325.00 extra (35% of production); bright window-frame and roof
drip moldings added to Hatchback and Wagon.
This is essentially how the car launched as a 1971 model. Production began
on June 26, 1970. After the National GM strike (September to November 1970)
ended, bright roof drip moldings were added to base "11" notchback, with
moldings sent to dealers to update units already in the field.
Cars magazine said in 1974: "Chevrolet paid a price for its rush to
introduce the car with other 1971 models. Tests which should have been at
the proving grounds were performed by customers, necessitating numerous
piecemeal "fixes" by dealers. Chevrolet's "bright star", received an
enduring black eye despite a continuing development program which
eventually alleviated most of these initial shortcomings