1972 Chevrolet Chevelle drag racing 1963 Studebaker Lark FACTORY STOCK DRAG RACE

Описание: 1972 Chevy Chevelle Heavy Chevy drag racing 1963 Studebaker Lark R2 F.A.S.T. FACTORY STOCK drag race
First car is a 1972 Chevrolet Chevelle Heavy Chevy. The other is a 1963 Studebaker Lark R2. The Chevelle has a 402 V8, while the Studebaker has a 289 V8 with a factory Paxton SN60 supercharger. The Chevelle Heavy Chevy 402 was rated 240 net horsepower (300 gross), and the Studebaker R2 was rated 289 horsepower (gross). The Lark features a Borg Warner T10 4-speed manual transmission, and the Chevelle houses a TH400 3-speed automatic. The Super Lark R2 is light; with driver only 3436 pounds. The Chevelle was slightly heavier at 3864 pounds. Rear gearing in the Chevelle is 4.56, and the Lark has a similar 4.55. They only made 53 Super Lark R2 cars in 1963. There were 9503 Heavy Chevy Chevelles produced in 1972.

Remember, both cars participate in Factory Stock class through F.A.S.T drag racing. Make sure you visit their website. https://www.fastdrags.com

Here are the Factory Stock rules:

Rules
For 1955 to 1979 muscle cars built in United States and Canadian assembly plants with a minimum warranty of 12 months and 12,000 miles.

Drivetrain: 
Automatic Transmissions: The transmission and torque converter must be correct for the year, make, and horsepower claimed. Shift improver kits are allowed. After-market shifters are not allowed. No manual valve bodies. No lightweight internal components allowed. 
Manual Transmissions: The transmission must be correct for the year, make, and horsepower claimed. 3-speeds may be upgraded to the correct 4-speed if originally available.

Rear Axles: 
The rear axle must be of the same manufacturer as the car. Any gear ratio is allowed. Driveshaft safety loops are mandatory on all cars 13.99 and faster! 

Engine:
Must be factory correct for the year, model, and horsepower claimed. Dealer installed engines and dealer performed engine modifications are not allowed. Casting numbers must be correct for the year and horsepower claimed including intake manifold, heads, and exhaust manifolds. Modifications are prohibited. Blocks do not have to be "numbers-matching," but they must be the correct displacement. Overbores up to .070" are allowed. Stock cranks only. NO strokers! Random P&G checks are possible. Compression may be increased to the greater of NHRA allowable stock blue print or 1.5 over advertised compression. NHRA

Electrical System:
The battery must be retained in the original location and securely fastened down with the original style hold down. The charging system must be fully operational at all times.

Fuel System and Carburetor: 
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!

Valve Train:
The complete valve train must be factory stock for the year, make, and horsepower claimed. Rocker arm ratio must be correct for the year and horsepower claimed. Roller tip rockers allowed as long as correct ratio is used.

Camshaft: 
The camshaft must be correct for the model, year, and horsepower claimed for duration, lift, and type of lifter (hydraulic or solid). No roller cams allowed.

Exhaust: 
Cast iron exhaust manifolds are mandatory and must be correct for the year, model, and horsepower claimed. NO internal modifications to the exhaust manifolds are allowed. Under no circumstances will headers be allowed, including those cars that came with headers delivered in the trunk. The exhaust system may be upgraded to a maximum of 2.5-inch head and tail pipes.

Ignition System:
 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.

Suspension:
Front Suspension: Stock springs and shocks must be retained. Drag springs and shocks that allow excessive lift during launches are NOT allowed.
Rear Suspension: Traction devices are limited to hop-stop bars for the upper control arms on coil-spring cars. Pinion snubbers and clamping of springs are allowed on leaf-spring cars.

Tires & Wheels: 
Reproduction tires or radial tires only. No soft compound tires of any kind allowed. Retread tires are not allowed. Use of traction compounds or rubber-softening chemicals on tires are strictly prohibited.



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