Is the Oldsmobile 425 a big block?
425. The 425 cu in (7.0 L) big-block was the first tall-deck “big block,” produced from 1965 through 1967. It is arguably the best engine Olds made in the muscle car era, although it never made it into a “muscle car”. It used a 4.126 in (104.8 mm) bore and 3.975 in (101.0 mm) stroke.
How much horsepower does a 425 Oldsmobile have?
| Engine manufacturer: | GM Oldsmobile V-8 425 |
|---|---|
| Horsepower gross: | 223.5 kW / 304 PS / 300 hp (SAE gross) |
| / 4400 | |
| Torque gross: | 583 Nm / 430 ft-lb |
| / 2400 |
How much horsepower can a Pontiac 400 make?
They found that the engine provided massive amounts of low-end torque and rock steady high RPM power output. The 389 posted numbers in the 330 horsepower range with a single spread-bore, four-barrel carburetor. The 400 pushed this number up to 360 horsepower, with the same Quadrajet single four-barrel.
What was oldsmobiles fastest car?
The 442 was Oldsmobile’s fastest offering, darting from 0-60 mph in just 5.8 seconds. This muscle car can give as much as 390 hp, making it one of the leading in the industry during its time.
Did the GTO come with a 455?
The result was the 1970 Pontiac GTO 455, which was stuffed with a beefy 455 HO V8 long-stroke engine. Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
Did Pontiac make a 400 big block?
In 1967, Pontiac took the basic recipe of the 389 and added a bit to its bore, creating the 400. With a 4.12-inch bore and a 3.75-inch stroke, Pontiac’s 400 had similar bore and stroke to Chevy’s big-block 396 (even when the Chevy actually displaced 402 cubic inches).
Why did they discontinue Oldsmobiles?
“Oldsmobile became associated with old stodgy vehicles because GM didn’t have the money to invest in really good new product lines, contemporary product lines, for all of the brands it had.” On April 29, 2004, that dark cherry Alero left the line with Lansing Car Assembly’s two most senior employees behind the wheel.
What are the Chevrolet big block head casting numbers?
Chevrolet Big Block Head Casting Numbers Casting No. Year Engine Size Port Type Intake Valve 330864 70-81 366/427/454 Oval 2.06 330865 70-84 366/427/454 Oval 2.06 330866 68-78 366/427 330867 68-73 427
When did the Chevy big block engine come out?
GM Production of the Chevy Big Block engine began in 1958 with the Mark I W Series and ended with the Gen VII in 2009. However, in the aftermarket production of heads, blocks or complete engines continue till this day. Over the years depending on the application Chevrolet used different head configurations for the Big Blocks.
What kind of intake port does a Chevy big block have?
All Chevy Big Block Heads came in 3 different intake port configurations. The Large Oval Port, the rectangular port, or the Small Oval Port aka Peanut Port. Early engines used either the large oval port or the rectangular ports heads. The oval port heads were used for the standard output engines in cars, trucks, and boats.
What are peanut heads on a big block?
The Peanut Port heads were introduced on the Gen V big blocks and were designed for truck applications. The ports are 1.56” tall and 1.44” wide. The smaller runner was designed to increased flow at lower rpm to help increase low rpm power and torque. These heads are not recommended for high revving performance applications.