Are 5.3L Truck throttle bodies the same as 5.7L TBs
#4
TECH Resident
iTrader: (17)
they are interchangeable and they are not the same. Some trucks came with bigger throttle bodies actually. You just have to find the years and models they came on. I believe the heavy duty/higher end trucks like the silverado and escalades that were NOT electroninc driven had the bigger 80mm throttle bodies. All the info is in my CARTECH by Will Handzel "How to build High performance LS1/LS6 Chevy V8s" book. Good stuff in there