The 1966 427 Chevy had two versions with different horsepower ratings. One version had a low-compression (10.25:1 compression ratio) four-barrel carburetor generating 390 horsepower and 470 pound-feet of torque, while the other version featured a four-barrel carburetor and an 11:1 compression ratio, producing 425 horsepower and 460 pound-feet of torque. These two versions of the 427 engine provided different power outputs to suit various needs and preferences.
It’s worth noting that the 427 cubic-inch big-block engine was available exclusively in the sports car (Corvette) and full-sized (Impala, Bel Air, Biscayne) lines in 1966, and it played a significant role in the performance world during that era.
Contents
- What was the most powerful 427 Chevy?
- What was the highest horsepower factory 327?
- Is a 427 a good engine?
- How much horsepower can you get out of a Chevy 427?
- How much HP does a stock 427 make?
- What was the most powerful 327 engine?
- How much horsepower does a 1966 Corvette 327 engine have?
- How much horsepower does a 1969 Chevy 427 engine have?
- How much horsepower does a 1966 427 have?
- What is the difference between a 427 and 454?
What was the most powerful 427 Chevy?
This bumped power up to 435, and on paper, it was the most powerful 427. Exclusive to the Corvette, the L88 had an even higher 12.5:1 compression ratio, a race-spec cam, higher flowing aluminum heads, and an aluminum intake manifold, along with some competition-grade components.
What was the highest horsepower factory 327?
375 horsepower
Those early 375 horsepower models were the fastest factory 327’s ever produced and by 1966 the engine dropped to 325 and 350 horsepower models that came with an 11-to-1 compression ratio.
Is a 427 a good engine?
The engine won instant fans, because the powerplant offered versatility and piles of horsepower. The 427 powered vehicles across the spectrum of Bowtie offerings—from family wagons to Corvettes.
How much horsepower can you get out of a Chevy 427?
For non-street use, the 427 ZL1 was built with aluminum blocks and cylinder heads. That engine, properly tuned, spit out more than 500 horsepower and was used in a variety of racing applications.
How much HP does a stock 427 make?
Ford’s 427 SOHC was rated at 616 hp with a single 4V carburetor, and 657 hp with dual quads. Chevrolet had a variety of 427s, also with various horsepower ratings of 390 hp, 400 hp, 425 hp, 430 hp, and 435 hp.
What was the most powerful 327 engine?
L84
Despite being down on inches to the 350, the 327 Chevy still lays claim to the most powerful production conventional small-block ever produced, the L84. Rated at 375 hp, the fuel-injected 327 was a high-winding screamer, as satisfying to drive as any big-block.
How much horsepower does a 1966 Corvette 327 engine have?
300 hp
Under the more familiar Corvette hood is one of two 327-cubic-inch V8s – with 300 hp or 350 hp – certainly not pallid. First off, the 300-hp engine is now standard equipment … with 327-cu.in. displacement, a healthy 4-barrel carburetor, big intake-valve cylinder heads and 2 ½” diameter dual exhaust system.
How much horsepower does a 1969 Chevy 427 engine have?
The 1969 Corvette 427 was offered with a choice of a 390-, 400-, or 435-horsepower engine. Not too many folks got to enjoy the explosive power of the hottest 427 unfortunately, though the faint-hearted might disagree.
How much horsepower does a 1966 427 have?
425 hp
The L72 was a 427 cu in (7.0 L) 90° overhead valve V8 big-block engine produced by Chevrolet between 1966 and 1969. Initially rated at 450 horsepower, the rating dropped to 425 hp (317 kW) shortly after its release (although there was no change in power).
What is the difference between a 427 and 454?
The 454 had a longer stroke 4.00 and a 4.251 bore vs the 427’s 4.25bore and 3.76 stroke. Yes. If you stay with a BB prior to 1990, I think that was the changeover year, everything should work.
