Description
Jaguar V12 E-Type 5 Speed Manual Gearbox Conversion
We have produced a Tremec 5 speed manual gearbox package for Jaguar V12 engines. This package was designed for Jaguar V12 engines used in a variety of vehicles providing the customer with a new manual 5-Speed gearbox that can be fitted behind the Jaguar V12 engine. Since we first produced our standard V12 Jaguar package, we have had customers with V12 E-Types ask to use this in the V12 E-Type cars. Initially we thought that the tunnel would be too small but a number of customers were determined to try this as the power level of their engines required a transmission such as the TKX to handle the power. To ours and their surprise, the transmission was tight but fitted with very modifications to make this package suitable for their vehicle.
Our package has been designed by ourselves to use the Tremec TKX gearbox (which we can supply in a choice of gear ratios). Most of the components in this package are designed or produced by ourselves and only sold as a complete package. The components supplied may not work if parts from our package are substituted for other components and for this reason we do not sell these items separately.
The TREMEC TKX is the latest in a line of very successful 5-speed rear wheel drive manual transmissions and has been developed solely for the aftermarket. The TKX also has a choice of gear shifter positions. For the E-Type we needed to fit a forward mounted shifter to get the shifter into the correct location. The standard shifter is removed and replaced with a new shifter unit. Our heat treated bellhousing is produced using CNC machine cut patterns and our process for machining these with the latest CNC equipment results in consistent, accurate and a great looking product. Our bellhousing machining allows our bellhousing to be used with both the earlier small dowel and later large dowel V12 blocks. The V12 E-Type would originally have had the small dowel engine but a number of the cars have had replacement engines that use the later, larger dowel size. Our package can accommodate these different engines but we need to know which engine you have as there are also variations on crankshaft. Our package can also be used with the later 6.0 litre blocks (with minor modifications by the customer).
This package includes our external clutch slave kit, which provides an easy to access hydraulic unit mounted externally to the bellhousing. The package is available with an internal hydraulic release bearing but our preference is to use the external slave.
Our billet steel flywheel has the correct teeth count for the Jaguar V12 (160 teeth) and so can be used with the Jaguar sensor (if mounted to our bellhousing – requiring additional work). The standard Jaguar starter motor is retained.
The following list of all new parts are included in our package (there are no used, reconditioned or exchange parts used in the kit):
Tremec TKX manual 5-Speed transmission with a choice of gear ratios
Forward shifter kit
Roadcraft CNC machined one piece bellhousing suitable for small and large dowel engines
Roadcraft billet steel 160 teeth flywheel
Custom 10.5” clutch cover and disc
Clutch fork
Roadcraft clutch release bearing
Adjustable clutch pivot
Roadcraft roller spigot bearing (we have two variants depending on engine year / crank fitted)
Roadcraft billet external clutch slave cylinder kit including mount and actuating rod
New transmission mount
ARP clutch cover bolts
ARP flywheel bolts
All bolts for attachment of gearbox and bellhousing
Assembly information
Gear ratios are the same from 1-4th gear. Choose from 0.81 (road race) or 0.68 (cruise):
1st 1:2.87
2nd 1:1.89
3rd 1:1.28
4th 1:1.00
5th 1:0.81 or can specify 0.68
Rev 1:2.56
Contact us for pricing
We also have twin disc clutch sets available for customers with up to 600+ HP


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