How much horsepower does a 1972 heavy Chevy have?

Horsepower of a 1972 Heavy Chevy
In 1972, the Heavy Chevy was available with the 454 cubic inch Turbo-Jet engine, which had its reported horsepower cut to 270 from the 1971 rating of 365 horsepower for what was basically the same engine. This was due to the change in power ratings, as most engines were rated by SAE standards J245 and J1995 before 1972, and the ratings were changed to reflect only the net output in 1972. The LS3 402-ci, 300-hp V8 was also available in the Heavy Chevy.
Therefore, the 1972 Heavy Chevy had a reported horsepower of 270 for the 454 cubic inch Turbo-Jet engine and 300 for the LS3 402-ci, 300-hp V8 engine.
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How much horsepower does a 1972 Chevelle have?

The 1972 Chevelle SS had a top engine rated at 270 net hp (201 kW) conforming with GM’s decree that all engines were to be rated at their net engine ratings. All other engines on the SS roster were unchanged from 1971.

What makes a Chevelle a heavy Chevy?

Heavy Chevys were factory coded as a base Chevelle and theoretically avoiding the SS title, which triggered staggering double digit insurance premium increases in the early ’70s. The factory RPO code YF3 made this a rare Heavy Chevy and was a sub-model based on the Chevelle series.

How much horsepower does a 1972 Chevelle SS 402 have?

240 horsepower
Though the calculations for SAE Net horsepower ratings pushed numbers down across the industry for 1972, this big-block’s 240 horsepower and 345 lb-ft of torque were still plenty to get this A-body hauling.

How many years did they make the heavy Chevy?

A short history of the 1971-1972 Heavy Chevy
In SS guise, it was also one of the Bowtie brand’s most sought-after muscle cars, reaching the pinnacle of performance in 1970 when the 454 LS6 engine became available.

What engines were available in the 72 heavy Chevy?

The base engine offered was a six-cylinder unit making 110 horsepower. A 307 cu in V-8 making 130 hp was offered as well as a pair of 350 cid V-8s, making 165 hp and 175 hp, respectively. The SS was still offered, and could be had with a 350 or a 402 V-8.

What is the difference between the 71 and 72 Chevelle?

The door panels differed slightly between the two years, with a white accent stripe in 1971 and a woodgrain stripe in 1972. Most interior pieces and upholstery are readily available. There is plenty of information available about Heavy Chevy Chevelles to aid in your research and restoration.

What was the biggest Chevy engine in the 70s?

454 cubic inches
The 454 cubic inches of the 1970 big-block was created by combining a 4.250-inch bore with a 4.0-inch stroke. In various power levels, the 454 was available in production cars and trucks from 1970 to 1976, and could be found under the hoods of Chevy trucks , Corvettes, Chevelles, Monte Carlos, and El Caminos.

How much horsepower does a 1972 Chevelle 454 have?

270hp
The only engine available in Chevelle SS 454s was the LS5, which ran 8.5-compression and retained its 4-bbl. Rochester carb and dual exhausts. It made a now net-rated 270hp at 4,000 rpm and 390 lbs.

How many 1972 heavy Chevy Chevelles were made?

But given it’s been offered for just two years, the production of the Heavy Chevy Chevelle ended up being quite limited. Chevrolet shipped a little over 6,700 units in the first year on the market and around 9,500 units for the model year 1972.

How much horsepower does a 1972 Chevelle SS 350 have?

For ’72, power was ratings were lowered to reflect only the net output. The base engine offered was a six-cylinder unit making 110 horsepower. A 307 cu in V-8 making 130 hp was offered as well as a pair of 350 cid V-8s, making 165 hp and 175 hp, respectively.