What engine came in a 1963 Pontiac Bonneville?
389-cid V-8
Power was provided with Pontiac’s 389-cid V-8, and a 4-barrel carburetor that boosted horsepower to 235—20 more than other Pontiacs. Bonnevilles with the Hydramatic automatic transmission received the same basic engine rated at 303 horsepower.
What years did Pontiac offer the 421 engine?
Responding to Ford, Chevy, and Chrysler each topping the 400-cubic-inch mark with their own competition engines, Pontiac introduced the 421 Super Duty for 1962, though a few engines went to select drag racers late in the 1961 season.
What years did Pontiac use the 421 engine?
The 421 SD became factory installed in 1962 and in 1963 a street version became available from the factory with a dual four-barrel or three two-barrel Tri-Power carburetion. Modified versions of this engine were extensively used in NASCAR stock car racing and drag racing competition.
How fast is a Bonneville GXP?
| Top speed: | |
|---|---|
| (theor. without speed governor) | 252 km/h / 157 mph |
What is a Pontiac 421?
The mighty Pontiac 421 was a star on the drag strip and a super nova on the Nascar tracks of the first half of the 60s. Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094″ and a stroke of 4.00″.
Is the Pontiac 421 a big block?
Now factory-installed for 1962, the 421 used a four-bolt 3.25-inch main block, featuring a larger 4.09-inch bore, a 4-inch-stroke forged steel crank, forged-steel rods, and forged-aluminum pistons, and more.
What year did the Pontiac make the GXP?
Discontinuation. The Pontiac Solstice GXP was only produced from the 2007 to 2010 model years, and its death came during GM’s bankruptcy, which saw the end of Hummer, Saturn, and Pontiac brands altogether.
What happened to the 1963 Pontiac Super Duty 421?
Unfortunately, that’s what happened with the 1963 Pontiac Super Duty 421. Super Duty 421s were back, tougher than ever. Compression jumped from 11.0:1 to 12.0:1, while other tweaks increased maximum shift points by 500 rpm, to a screaming 6400 rpm.
How many 1963 Grand Prix cars had a 4-speed transmission?
According to conceptcarz, there were only 5,157 Grand Prix cars with a four-speed made in 1963. Fewer yet of these models were ordered with the 421 engine!
How much horsepower does a Pontiac 421 Super Duty have?
Most of the Super Duty 421 engines, including this rare405-bhp version, went into Catalinas. For those unwilling to take the Super Duty plunge, Pontiac introduced two new 421s that were more streetable. These High Output 421s had 10.75:1 compression and 353 hp with a four-barrel or 370 hp with three two-barrels.