- 1486cc 6-cylinder, with 57.5mm bore.
- 2 triple-choke SU carbs were fitted, complete with dash-pots and float-chambers.
- 33TT Six Chassis
- Deep channel-section frame was underslung at the rear, beneath the live rear axle, which was supported on long semi-elliptic springs.
- Tie bars fitted on the front springs to help reduce brake torque.
- 15in Brake Drums, on 17in wheels.
Enlarged to:
- 1633cc, with 60.3mm bore.
Dixons adjustments to the brakes.
And then to:
- 1808cc, with 63.5mm bore.
And finally to:
- 2000cc, with a new crank.
- This gave 170-175bhp.
- 14.5:1 compression ratio.