1971 AMC Javelin 401 vs 1972 Buick GSX | STOCK DRAG RACE



1971 AMC Javelin drag racing 1972 Buick GSX. Pure Stock Muscle Car Drag Race. Factory Stock Drag Race.
First car is a 1972 Buick GSX. The other a 1971 AMC Javelin. The Javelin has a 401 V8, and the Buick has a 455 Stage 1 V8. The Stage 1 455 was rated 270 net horsepower, while the 401 was rated 330 gross horsepower. Both have automatic transmissions, the AMC being a Shift Command 3-speed from Borg-Warner, and the Buick having a TH400 3-speed automatic. Rear gearing in the GSX is 3.90, and 3.73 for the AMC Javelin. The Javelin weighs 3566 pounds including the driver, and the GSX is quite heavy at 4254 pounds. Sports Car Graphic tested a 1971 AMC Javelin with a 401 and automatic transmission. It ran 0-60 in 6.5 seconds and the quarter mile in 14.3 seconds @ 98.8 mph. There were only 44 GSX cars produced in 1972, and only 22 of those were Stage 1 cars with the automatic transmission.
Remember, both cars participate in Factory Stock class through F.A.S.T drag racing. Make sure you visit their website.

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.

Disclaimer: The Cars And Zebras YouTube channel is a news channel bringing results/news of drag racing with added history of automobiles. All footage/pictures used were either captured by the Cars And Zebras channel, or used for critique purposes under Fair Use.

44 Comments

  1. GSX wins on looks alone! Lol. Nothing more sexy than a GS OR a GSX. If it would've been the higher compression 455, 70s, it would've spanked that AMC and asked to see the red marks. Lol.

  2. Both cars are awesome cars, but both are actually really rare cars too. The amc’s are very overlooked cars, they had some really cool cars. Great video though loving the content.

  3. Two the best. Huge Buick GS fan, but also pulling for the underdog Javelin. Bond never driving a Buick is payback enough, I guess.

  4. Oh man, what a pair. AMC turned out some great cars on a tight budget – the AMX being one of them. And the GSX – oh yeah – going fast with class. Couldn’t go wrong with either of these, and a great race. Thanks as always for your time putting these together! 🌮 🌮

  5. Back in the mid 70s a buddy bought an AMC Javelin… I honestly do not remember which V8 it had but it had that same cool grill. It had a limited slip diff and he promptly spun it and crunch the grill… found a replacement but it was a different design and not as cool. Great seeing this car run and NICE with a one of 22 Buick GSX Stage 1… yeah baby!

  6. Thanks brother! I’ve been street racing (when I was younger) for many years and I never gave credit to the Stage 1 or the 340 molar until now. Thanks for opening my eyes🎉

  7. I can't understand how the GSX was so fast having less power and being much heavier than the javelin, I thought the javelin would destroy the GSX.

  8. Couple rare ones today. Both nice looking cars too. I think if they left evenly the Javelin would have nosed the Buick out. It made a good run at it as it was. Thanks again for the vid! 👍

  9. Both awesome cars. Wonder what the results would be with the 401 with 10 or 11 to one compression. I love the GSX dash, just beautiful. The Javelin looks so good with doggies on👍

  10. Gorgeous pairing of cars! As a Mopar guy I even had a hard time picking a favorite here but it does happen to be the underdog, Javelin. Really cool cars from a quirky little car company from Kenosha.

  11. Where in the world are you getting the weights for these cars? Auto Catalog Data shows 1971 GS 455 auto to be 3721 lbs curb weight, ok may not include a tank of gas, but holy cow over 4254 with driver? No way, unless the guy is 300 + ! Other GM A bodies like GTO Judge same around 3850 lbs. You should reference CURB weight from a single database to be consistent.

  12. I have a magazine with that javelin in it . It was a pristine low mileage 6 cylinder car when the guy bought it , he transplanted the 401 and driveline into it .

  13. "In the right lane a "68 Superbee…"
    Did the anouncer look out the Window?! It's Super Cool seeing that '72 GSX! A 'Real' one sitting next to the obviously 'fake' one, as they never made 'Post Coupe' GSX's. But whatever… you can run what you can build… I wonder if that GSX (or the Javelin) still have their original Compression Ratio's)? I would assume that as to the Rarety of both cars. I'm sure most '401' Javelin's were AMX's. Great Race! Would have loved to have seen a Couple more rounds… 😊

  14. Would be nice if you say what milage the race is somewhere. At a 1/4 of a mile the AMC is still winding up, plenty left on the top end with those 3.73s

  15. You think maybe you were off on your HP figures? How could the Buick have 100 less HP, weigh 600lbs more and be 2 tenths faster?

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