How Much Horsepower Does A 1973 Chevy 454 Have?

Finally, in 1973, GM introduced the 454ci LS4 as an available engine option for the Corvette. Rated at 270 HP, the LS4 was a far cry from the L88 of less than a decade prior, yet impressive nonetheless, when compared to other manufacturer’s offerings of the era.

How much horsepower does a 1973 454 have?

A 1973 truck 454 was typically factory-rated 240 hp at 4,000 rpm and 355 lb-ft of torque at 2,800 rpm.

What year 454 had the most HP?

1970
The 1970 versions of the Chevrolet 454 were the most powerful, with the LS5 putting out around 360 horsepower and the LS6 delivering about 450 horses.

How much HP does a Chevy 454 make?

454ci/L29: Rated at 290 hp, The Vortec 7400 is the last generation 454, with the same 4.5×4-inch bore and stroke as before. Like the Gen V, all engines feature four-bolt mains.

How much HP did 1970 454 have?

The 1970 LS6 454, factory rated at 450 hp, was exclusive to the Chevelle and the El Camino. It not only gave Chevrolet intermediates more power than the Corvette that year, it was the most powerful engine those cars would ever have.

How much HP does a carbureted 454 have?

Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big surprise. But like any stock engine, there was tons of power left to be squeezed out.

How much horsepower did a 1972 454 Corvette have?

The standard engine on the 1972 Corvette was the 350 cubic inch with 200 horse. The final year for the LT-1 engine had it rated at 255 horse, but it could now be ordered with air conditioning, a combination not permitted the two previous years. The LS5 454 cubic inch big block was available and came in at 270 horse.

What year did Chevy stop making the 454?

From 1991 the 454 was updated to the new Gen V block, crankshaft and heads. This engine was rated at 230 net hp, 380 ft lbs net torque, and was discontinued after 1995, GM coming out with the Vortec 7400 in 1996.

What year did they stop making 454?

The revised 454 (now known as the Vortec 7400) was good for a whopping 290hp and 410 lb-ft of torque, and it was offered until 2001 (the final year for commercial and recreational vehicle use).

How much can a 454 be bored out?

That’s because the classic, Mark IV big-block is limited to about 0.100-0.125-inch maximum overbores. On a 454ci engine with a stock, 4.00-inch stroke, a 0.100-inch overbore delivers a 476-inch displacement, while a 0.125-inch overbore will give you a 481-inch Rat.

How much horsepower does a 1982 454 have?

If you do the math, this 454 was actually making almost 250hp and 400 lb-ft of torque.

How much horsepower does a 1971 454 have?

All told the 454 makes 540 hp at 6,800 rpm and 565 lb-ft of twist at 4,200—more than enough to light the tires whenever the mood strikes.

How much horsepower does a cam add to a 454?

The 454 responded very well to the cam upgrade, as the peak numbers jumped from 376 hp and 482 lb-ft with the stock cam to 428 hp and 507 lb-ft of torque. An increase of 52 hp is always welcome, especially when it comes with a sizable jump in peak torque.

How fast is a 454?

But as MotorWeek found out, the 454 SS was still pretty quick. Lots of low-end torque helped the truck sprint to 60 mph in 7.7 seconds, while the quarter-mile took 15.9 seconds.

How fast is a 1970 Chevelle SS 454?

For performance, the 1970 Chevelle SS 454 completed a 0 to 60 mph run in 6.1 seconds. A ¼ mile sprint in 13.7 seconds at a top speed of 103.1 mph. The Average top speed of this beauty was marked as 162 mph.

How many MPG does a 454 big block get?

He was telling me that in his experience only that the fuel injected 454s (especially the Vortec 454) usually got about 12 MPG while the carbureted 454s got around 6 MPG on the highway.

Are 454 engines reliable?

Both the 350 or 454 are great reliable engines and going with either one of them would be great for a classic American sports car.

How much HP is a stock 454?

The stock 454 i pulled out of my 74 truck was pushing 360 hp and it was stock everything. It had 150,000 miles though so it was a 390hp motor new im sure. 8 people found this helpful.

What size carburetor do I need for a stock 454?

Because the 454 is less efficient, it doesn’t need as much cfm, so a 750cfm carb would be fine while a 650 cfm carb would be too small.

Did 1973 Corvette have a 454 engine?

The C3 Corvette languished all the way to 1982 as General Motors largely ignored performance car development during the darkest days of America’s repeated energy crises. The 454 continued on in 1973 as the LS4, providing 275 horsepower, but at the end of 1974 it would leave the fleet forever.

How much horsepower did a 1974 Corvette 454 have?

Three engines were available: the L48 and L82 small-block 350s, rated at 195 and 250 hp, respectively; and an LS4 454, rated at 270 hp.