1973 Firebird SD455 vs Land Yacht | STOCK DRAG RACE



1973 Pontiac Firebird SD455 drag racing 1961 Pontiac Catalina Super Duty 421. Pure Stock Muscle Car Drag Race. Factory Stock Drag Race.
First car is a 1973 Pontiac Firebird with a Super Duty 455 V8 (SD455). The other a 1961 Pontiac Catalina with a Super Duty 421. The SD455 in the Firebird was rated 310 NET horsepower, and the Super Duty 421 in the Catalina was rated 373 GROSS horsepower. Both cars have 4-speed manual transmissions. Rear gearing in the Firebird is 3.73, while the Catalina has 4.10. The Firebird weighs 3894 pounds, which includes the driver. The Catalina has a curb weight of around 3800 pounds.
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:
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 – compression ratio 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.

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.

39 Comments

  1. Most exciting drag racing series IMHO. I'd rather watch the Pure Stock Series than any of the NHRA Pro classes (Top Fuel, Funny Car, Pro Stock). Thanks for another great matchup my friend, Semper Fidelis!

  2. You got it Pontiac ! The Catalina could've run 3.73 s and had the venerable 455 for lunch . That being said I just saved some money on Niagra !! Thanx .

  3. Goodday C & Z,

    I think I went to Poncho heaven.
    I will take one of each.

    Your number 1 Fan in Australia
    Louis Kats from Melbourne Australia ☺ 👍 ❤

  4. I bought new the 73 455SD 4 speed red with the white interior I ordered it with the old style wheels as I didn't like the honeycomb wheels and crank windows My Girlfriend had a 72 and the bird decal didn't last in the Arizona sun so when I ordered it I told them no bird and they just put the 455 on it without the SD.
    I still have the cigarette lighter after blowing two engines . It was 1 of the 10

  5. The C8 Corvette is nearly that heavy. I wouldn't consider that Catalina to be a land yacht. Same model a decade later, yes.

  6. Thanks!!! oddly: we heard about the 421SD IN 1961 PONCHOS ….. around our SERVICE STATION hang Outs , and from Dragstrips( Northern Indiana……) ..The ***SD455 in 1970s , efc: got me Hooked PONTIAC, to order in OCT 1976, a 1977 HURST Hatch/ SE 6.6 L/ auto/cruise, etc. TRANS Am( BEFORE SMOKEy Bandit)……that is when we finally got the monies.. Anyways, needed work::used NUNZI, HO PRODUCTS,,KONI, etcp to improve A LOT.

  7. 12.71? That's faster than a Hemi,
    Mach, or LS6!!!! Go Poncho Go!!!!
    My mother had a 1971 Formula 400.
    What a machine!! When she floored
    the gas pedal, you'd lose your breath! What a car, what a time!!
    Thanks for the post!!!!

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