1970 Buick GSX Stage 1 vs 1969 Mercury Cougar 428 Cobra Jet PURE STOCK DRAG RACE - no commentary

1969 Mercury Cougar Eliminator Cobra Jet drag racing 1970 Buick GSX
First car is a 1970 Buick GSX. The other a 1969 Mercury Cougar Eliminator. The Buick GSX has a 455 Stage 1 V8 rated 360 horsepower. The Mercury Cougar Eliminator has a 428 Cobra Jet rated 335 horsepower. The GSX has a TH400 3-speed automatic transmission that was specially calibrated for the Stage 1 455. The Cougar Eliminator Cobra Jet has a Select Shift 3-speed automatic (a Ford C6). Rear gearing on the Buick GSX is 3.64. The Mercury Cougar Eliminator has a set of 3.50 rear gears. Both cars are somewhat heavy with the GSX Stage 1 weighing 3998 pounds including the driver. The Cougar Cobra Jet is 3820 pounds with driver. Buick only produced 280 GSX Stage 1 cars with the automatic transmission. Mercury only produced 162 Cougar Eliminators with the 428 Cobra Jet, Ram Air, and automatic transmission. In 1970 Motor Trend tested The Buick Stage 1 and it ran 0-60 in 5.5 seconds and the 1/4 mile in 13.38 seconds @ 105.5 mph. There was no original testing for the Mercury Cougar 428, but Car and Driver tested a 1969 Mustang Cobra Jet (automatic transmission, 3.91 rear gear, around 250 pounds lighter than a Cougar) and it did the 1/4 mile in 14.3 seconds @ 100 mph and 0-60 in 5.7 seconds.
Pure Stock Muscle Car Drag Race (PSMCDR). FAST Factory Appearing Stock Tire factory stock. Super Car Drag Race.
Remember, both cars participate in the Pure Stock Muscle Car Drag Race series, so please check out their website: https://www.psmcdr.com
Also make sure you find them out on Facebook.

The rules for PSMCDR are listed below:

For 1955 to 1979 musclecars built in United States and Canadian assembly plants with a minimum warranty of 12 months and 12,000 miles.
Any car running faster than 11.50 will be disqualified and will not have a qualifying time recorded.
Any convertible running faster than 13.50 will be disqualified and will not have a qualifying time recorded.
Casting numbers must be correct for the year and horsepower claimed including intake manifold, heads, and exhaust manifolds. Blocks do not have to be "numbers matching," but they must be the correct displacement. Overbores up to .070" are allowed. Stock cranks only.
All Engines – 1.5 extra points allowed over advertised.
The camshaft must be correct for the year, model, and horsepower claimed for the type of lifter (hydraulic or solid). Roller cams NOT allowed.
The valve train must be factory stock for the year, make, and horsepower claimed.
The ignition system must be stock, including the distributor, cap, coil, and wires. Points may be replaced with any electronic conversion that fits under the stock distributor cap.
The carburetor must be correct for the year, make, and horsepower claimed. Jetting and metering changes are permitted. THE CHOKE ASSEMBLY MUST BE IN PLACE AND FUNCTIONAL!
Cast-iron exhaust manifolds are mandatory and must be correct for the year, model, and horsepower claimed. Internal modifications to the exhaust manifolds are NOT allowed. Under no circumstances will headers be allowed, including those cars that came with headers delivered in the trunk. Pipes must be routed as they were originally for the year, make, model, and engine combination. Mufflers must be stock looking in design, that is, oval in shape. No glasspacks or straight pipes allowed unless installed as original equipment. Maximum muffler inlet and outlet size is 2.5 inches. X & H pipes allowed.
The radiator must be correct for the year, make, model, and horsepower claimed. No lightweight, aluminum radiators allowed.
The camshaft must be correct for the year, model, and horsepower claimed for the type of lifter (hydraulic or solid). Roller cams NOT allowed. Duration at .050" lobe lift must be within 1% of factory specs. Lift at the valve must be within 2% of factory specs. Maximum stall limited to 2200 rpm.
The transmission must be correct for year, make, model and engine of the car. 3-speed manuals may be upgraded to the correct 4-speed if originally available.
The rear axle must be of the same manufacturer as the car. Any gear ratio is allowed.
Reproduction tires or radial tires only.You are allowed to run tires one size over stock.
Factory wheels only.


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