What car did the 4L80E come in?
4L80-Es were optioned only in Chevrolet/GMC pickups, vans, and commercial vehicles, and the Hummer H1. It was also adopted by Rolls Royce in 1991 and modified after extensive testing, and used initially in the Bentley Continental R, and subsequently other Rolls Royce and Bentley vehicles.
What was the name of the 1991 Chevy 454?
Generation Five. The Generation Five, called Gen V by Chevy’s marketing team, is the name given to the 1991 Chevy 454 engine. The new name came because of changes made to the engine to “modernize” it.
What kind of transmission does a 91 suburban have?
The truck is equipped with a 700R-4 four-speed automatic transmission that is infamous for a problematic TV cable adjustment, which leads to transmission failures. With this in mind, we opted for a 4l80e transmission. On a two-wheel-drive Square Body, this transmission swap is a breeze.
What kind of gas mileage does a 454 TBI get?
GAS MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. Nothing is going to help that fuel mileage more than overdrive.
Can a 91 suburban be swapped for an LS?
The location of the compressor on the LS usually is not the best for a swap as it can interfere with the frame, steering, and other components. Holley offers an excellent conversion (PN 20-140) that uses the factory-style ’91 Suburban R4 compressor.
The truck is equipped with a 700R-4 four-speed automatic transmission that is infamous for a problematic TV cable adjustment, which leads to transmission failures. With this in mind, we opted for a 4l80e transmission. On a two-wheel-drive Square Body, this transmission swap is a breeze.
When did the Chevy 4L80E transmission come out?
Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available. In 1991 the 4L80E was rolled out in GM trucks, including the Sierra, Silverado, Suburban, etc. as well as the Hummer H1.
GAS MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. Nothing is going to help that fuel mileage more than overdrive.
The location of the compressor on the LS usually is not the best for a swap as it can interfere with the frame, steering, and other components. Holley offers an excellent conversion (PN 20-140) that uses the factory-style ’91 Suburban R4 compressor.