Transmission Adapter Kit for Gen III GM LS V8 TH350 700R4 4.8L 5.3L 6.0L truck

Transmission Adapter Kit for Gen III GM LS V8 TH350 700R4

This transmission adapter kit is a hardware set that allows a Gen III GM LS V8 engine to be mated to a TH350 or 700R4 transmission, and it includes the components needed to align the flexplate and converter spacing correctly for the swap.

Overview

This transmission adapter kit is designed for builders pairing a Gen III GM LS V8 with a TH350 or 700R4 gearbox. The kit handles the spacing and alignment differences between the LS engine family and these classic transmissions. It is intended for engine swap projects in 4.8L, 5.3L, and 6.0L truck applications.

Built For Performance

• Spacer plate matches LS crankshaft flange spacing to the converter
• Hardware set includes the bolts needed for a clean install
• Machined from durable materials for long service life
• Designed to work with 4.8L, 5.3L, and 6.0L truck engines
• Compatible with both TH350 and 700R4 transmissions

Fits These Machines

• for Gen III GM LS V8 equipped vehicles
• for 4.8L truck engines
• for 5.3L truck engines
• for 6.0L truck engines
• for TH350 transmissions
• for 700R4 transmissions

On-The-Job Use

• LS engine swaps into older chassis
• Retrofitting a TH350 behind a modern LS V8
• Replacing a 700R4 with a fresh adapter setup
• Race car and hot rod drivetrain builds

Specs At A Glance

Good To Know

Q: Do I need to measure converter spacing after installing the kit? A: Yes, checking the gap between the converter and flexplate is essential to avoid binding and premature pump wear.

Q: Will this work with a 4L60E? A: This kit is listed for TH350 and 700R4 transmissions, so confirm your specific gearbox before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.