Also known as the Vortec 7400, the L29 was the final and most modern iteration of the venerable big block Chevy. It was available from 1996 to 2000 in 2500/3500/3500HD trucks and 2500 Suburbans. Factory power rating was 290 HP at 4000rpm and torque was 410 ft-lbs at 3200rpm.
Category: Engines
Information, identification, and specifications for the factory installed engines in 1988-2000 Chevrolet/GMC Pickups and SUV’s (GMT400) .
1988
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L19 454 : Big Block Workhorse
The L19 was available from 1988 to 1995 in 2500 and 3500 trucks, and also in the 1990-1993 SS454 C1500. The general specifications remained very similar for its entire run, other than a block redesign to to new Mark V architecture in 1991.