General Motors in year 1970 brought in the 454 cubic inch (7.4L) engine on the basis of its earlier 396 and 427ci big block platforms. 454 engine was utilized in both trucks and cars for heavy-duty performance and work applications. After numerous years of earlier production, in 1970 Chevrolet raised the displacement of its big block engine by enlargement of the 427ci engine’s stroke from 3.76 to 4 inches. No changes were made to bore. Keeping it 4.25 inches alike earlier versions. The 454 engine produced 680 N.m (500 lb·ft ) and 390 hp (291 kW). The LS6 engine was power rated up to 340 kW. Also, it was suggested that the LS6 was considerably underrated. It was capable to produce well more than 370 kW.

With the similar fundamental cylinder block design as earlier ones, the crankshaft was the vital. The smaller displacement big block parts in most of the earlier from small block Chevrolet engine family were interchanged with the latest 454ci engine. At first, 454ci engine was a performance-oriented engine. It was made available in Chevelle SS and Corvettes models. However, it was a very good option in GM truck lines and larger cars. For accommodating the amplified stroke and dimensions of the crankshaft, it was not possible to balance the crankshaft internally. GM engineers used external weight adaptations on the flywheels/flexplates as well as harmonic balancer. Some changes were incorporated in the cylinder heads as well; however, the fundamental configuration was the one and same.

The output of 454ci engine was rated up to 450 hp. In the year 1970, it was one of the leading and most powerful engines ever developed. The more interesting thing is that the engine was able to produce more than 750 hp in modified racing applications. The 454 engines produced 680 N.m (500 lb·ft ) and 390 hp (291 kW). The LS6 engine was power rated up to 340 kW. Also, it was suggested that the LS6 was considerably underrated. It was capable to produce well more than 370 kW. A 490 lb·ft (660 N·m) and 465 hp (347 kW) version of the 454, known as LS7 was also designed. However, it never went for production, but some Chevy dealers produced a few of LS7 intake manifolds and put on the market as performance parts. After this GM offered LS7 as a crate engine. It was advertised at 370 kW (500 hp).

However, after 1976, 454ci engines were not used in cars. They were utilized in GM trucks up to year 2000, when the 8.1L (496ci) engine took its place in production vehicles. The 454ci engine gained popularity as aftermarket and marine engine. If you are interested in knowing more about this or intend to go for 454 engine then various resources are available online. You can go through all available options and choose the perfect one for you. You can also get right kind of auto parts, used 454 engine, cheap 454 engine, 454 engine parts and 454 engine kits at www.automotix.net.

FIND AUTO PARTS.FAST.CHEAP.
1-800-378-7566
Over 30 million Auto Parts online...
Shop online for auto or truck parts and save up to 75%...
Access LIVE Inventory Of All Major Salvage Yards In The US
Make : Model : Year :