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This package is similar to our TKX package for Chevrolet but uses unique parts to fit the LS series engines.

We have a complete package to put the Tremec TKX behind Chevrolet LS V8 engines.  Built to handle 600lb/ft of torque the updated transmissions benefit from accommodation for different shifter locations, provision for mechanical and electronic speedometer pick up, reverse lamp and neutral safety switches and a high performance, billet aluminium short throw shifter.  This shifter isolates road noise whilst providing a clean crisp feel together with a unique biasing system, which is adjustable for personal preference.

In order to achieve the increased torque capacity, the manufacturers now use a higher grade alloy steel (4615) on all gears and shafts, have increased the diameter on the output shaft to a 31 spline, and eliminated the woodruff keys on the countershaft by going to a one-piece design from the previous three piece.  The shift forks were also completely redesigned and are now all made from cast iron and use a three-pad contact system -virtually eliminating any deflection.

Ratios are:
1st 1:2.87
2nd 1:1.89
3rd 1:1.28
4th 1:1.00
5th 1:0.81
Rev 1:2.56


We also have the option for fifth gear with 0.68.  The 0.81 tends to be favoured for road race style and the 0.68 for lazier 5th gear with low revs.

Our transmission package is complete with all parts to install a manual transmission behind Chevrolet LS V8 engines.  This package assumes the customer has a production LS engine producing up to 450HP for street use.  We use both original GM and McLeod billet flywheels in our packages (168 teeth), an aluminium flywheel is available at additional cost. The package includes a billet slave cylinder for use with most ¾” bore slave cylinders.  The clutch fork will also accept cable operation.

New 168 teeth flywheel
New one piece CNC machined aluminium bellhousing
New 11” clutch cover and disc
New clutch release arm
New clutch release bearing
New roller spigot bearing
New billet external clutch slave cylinder kit including mount and actuating rod
New transmission mount
Clutch cover bolts
All bolts for attachment of gearbox and bellhousing
Assembly information

Customers with higher horsepower engines than listed (or racing use) may wish to upgrade to the McLeod RST twin-disc clutch set.

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