Tremec TKX Manual 5-Speed Transmission for Chevy 350/305

This TREMEC TKX manual 5-speed transmission is built specifically for the Chevy 350 and 305 small-block V8 family, sold as a bare transmission rather than a complete swap kit. Rated for 600 lb-ft of torque, it uses the same core TKX gear set found in TREMEC's LS-swap kits, adapted to a small block bellhousing pattern.

What it is for

Multi-cone synchronizers and hybrid bronze-and-carbon synchronizer rings are built in for crisp shifts up to 7,500 RPM, while the slim aluminum case improves tunnel clearance in classic Chevrolet cars and trucks compared to older four-speed designs. An overdrive fifth gear lowers highway cruising RPM for quieter, more efficient driving.

What to check before buying

• Engine match: built for small block Chevy 350 and 305 applications, not the LS family.
• Shifter location: three selectable shifter positions suit different cab and console layouts.
• What is not included: bellhousing and shifter are sold separately from this transmission.

What is the dry weight? Approximately 99 pounds.

What is the fluid capacity? About 2.7 Quarts of TREMEC high-performance manual transmission fluid.

What is the warranty? TREMEC limits coverage on this unit to 1 year, for defects in materials and workmanship.

First gear in the GM close-ratio set runs 2.87:1, with fifth gear available in 0.68:1 or 0.81:1 depending on the specific unit, so confirm which overdrive ratio your build needs. transmissions