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Pontiac Trans Am vs. Ford Mustang vs. Dodge Challenger - Pony Express!

Three Very Different Ponycars From The '70s Gallop Into The Future With One Thing In Common: They All Kick It On The Street.
By Stephen Kim
Photography by Robert McGaffin
Trans Am Vs Mustang Vs Challenger Muscle Cars
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 2
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am
Like a water injection system,... 
   
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Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am
Like a water injection system, methanol is administered only when boost hits a preset level. Likewise, the nitrous is jetted at 175 hp, and only called upon to cool the air/fuel mixture and beef up low-end and midrange performance. The blower is set at 10 psi, and a Hydroboost master cylinder assists with braking.
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 3 Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 4
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 5
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 6
With two nitrous bottles,... 
   
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Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 6
With two nitrous bottles, a six-gallon methanol cell, and an intercooler water tank, the Trans Am's trunk is crowded to say the least. Even with all the street time the car sees, the methanol supply lasts several weeks between fill-ups.
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 7
The suspension has been fully... 
   
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Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 7
The suspension has been fully modernized with tubular Global West control arms, Koni coilovers, and a Hellwig 17/16-inch sway bar up front. Out back are Global West leaf springs, a custom panhard bar, Koni shocks, and Calvert Racing traction bars. The metallic orange paint is off of a Lamborghini.
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 8 Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 9
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 10
Centerline built custom one-off... 
   
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Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 10
Centerline built custom one-off 18-inch wheels for the Trans Am. Peering out from between the spokes are Aerospace brakes with billet four-piston calipers.
Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 11 Trans Am Vs Mustang Vs Challenger 1978 Pontiac Trans Am 12
BY THE NUMBERS
'78 PONTIAC TRANS AM
Tony Panterra, 42 * Encino, CA
ENGINE
Type: Oldsmobile 498ci big-block
Block: factory Olds, bored to 4.200 inches
Rotating assembly: Eagle steel crank
offset-ground to 4.500 inches,
Mondello aluminum rods,
Speed-Pro 12.5:1 pistons
Cylinder heads: ported Batten aluminum castings
Camshaft: custom Mondello
292/292-at-0.050 solid roller,
0.778/0.776-inch lift, 108-degree LSA
Induction: Batten single-plane intake manifold,
Carb Shop 950-cfm blow-through carb
Power adder: Vortech YSi-trim centrifugal
supercharger, NOS nitrous system jetted at 175 hp
Exhaust: custom 2¼-inch long-tube headers,
dual 3-inch Flowmaster mufflers

DRIVETRAIN
Transmission: FB Performance Ford AOD auto and
3,500-stall converter; B&M shifter
Rear axle: Chassisworks 9-inch rearend, 35-spline axles,
3.00:1 gears, limited-slip differential

WHEELS & TIRES
Wheels: custom one-off Centerline 18x8, front; 18x9, rear
Tires: BFGoodrich 255/40R18, front; 285/40R18, rear


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