Chevy/GM 7.4 454 - Production Years 1970-1990

Description

The 454 big block is one of Chevy’s longest-lasting engine platforms. With a 20-year run, the 454 is a popular aftermarket engine beloved by powersports enthusiasts.

Introduced in Chevy/GM’s 1970 production vehicles, the LS5 454–introduced in the 1970 run of Chevrolet Corvettes–featured a 4.25” bore and was rated at 360 bhp.

Throughout the 1970s, the 454–first the LS-5, then the LS-6 and LS-7–and all featured some performance upgrades. The LS-7 was a limited run in the Corvette, making it a sought after collector’s item.

The 454 was slowly phased out of Chevy/GM passenger cars throughout the middle of the 1970s–likely to help these vehicles meet more stringent emissions standards.

It was still used in Chevrolet and GMC’s line of pickup trucks until the 1990s, when it was eventually replaced by a newer model.

Makes & Models

The 1970-1990 Chevy/GM 454s came in two-bolt and four-bolt configurations. The two-bolt configuration was used on passenger vehicles. The four-bolt variation was used in heavy duty trucks and pick-ups.

Models include

• 1970–1976 Chevrolet Caprice
• 1970–1975 Chevrolet Chevelle
• 1970–1975 Chevrolet Monte Carlo
• 1970–1975 Chevrolet El Camino
• 1971–1975 GMC Sprint
• 1970–1974 Chevrolet Corvette
• 1970-1990 Chevy/GMC C/K Trucks
• 1970-1990 Chevy/GMC G/P vans
• 1970-1990 Chevrolet Blazer
• 1970-1990 Chevrolet/GMC Suburban

1970-1990 Chevy 454s from MABBCO

• Two-Bolt Short Block Chevy 454s - 1970-1990
• Four-Bolt Short Block Chevy 454s - 1970-1990
• Two-Bolt Long Block Chevy 454s - 1970-1990
• Four-Bolt Long Block Chevy 454s - 1970-1990

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