Swift Rear Coil Spring - 5.5" OD x 11" Tall - 375 lb. 3552024-13-XXL Throttle Body Adapter for LS1

Throttle Body Adapter for LS1 throttle body to EFI elbow

using the existing factory mounting points

and imports

Exhaust Side Is Straight To Accommodate FPP Block Water Passages

2001-2010 GMC Sierra 2500 HD

Swift Rear Coil Spring - 5.5" OD x 11" Tall - 375 lb. 3552024-13-XXL Throttle Body Adapter for LS1DEVELOPED SPECIFICALLY FOR ROUND TRACK RACING. DESIGNED TO HAVE THE OPTIMAL SPRING RATE SWEET SPOT WHERE THE SPRING IS USED ON ACTUAL VEHICLE. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With options for both dirt and asphalt tracks, Swift has a wide range of coil spring formats, including coil over, dual rate, bump springs, and more. Swift Springs superior engineering has provided the