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Created by David West
Featured in the inaugural edition of Spitfire & GT6 Magazine
modification of the frame
Frame Design
redesigned motor mounts
Motor Mounts
installing the 383 cid engine
Chevy 383 V-8
Installation
Installation of Tremec 5-speed
Tremec 3550
Installation
adapting of the Miata seats
Miata Seat Installation
front suspension upgrade
Front Suspension
Upgrade
rear suspension upgrade
Rear Suspension
Upgrade

The original transmission, a Muncie 4-speed, has since been replaced by a Tremec 3550 with a PRO 5.0 Shifter, purchased from Forte Parts Connection, Waltham, Md. The Tremec was originally designed and manufactured for Ford engine applications - it is the only transmission that I could find that would take the 500 ft-lbs of torque that my 383cid Chevy small-block produces. In researching transmissions, I had talked with both Borg Warner and Tremec engineers. Forte modified the 3550 to fit Chevy bellhousings. Forte's modifications included replacing the Ford input shaft with a Chevy input shaft. Now the Tremec is manufactured for both Fords and Chevys.

A Weber clutch and a McLeod hydraulic throwout bearing, purchased from Weber/McLeod Industries, Placentia,Ca., replaced the normal Chevy clutch and slave cylinder system. McLeod's hydraulic throwout bearing assembly was advertised to work with the 3550, but in my case, required additional machining to fit the Chevy bell housing. Weber/McLeod was great to work with. The Tremec 3550 and McLeod hydraulic bearing makes the car a true joy to drive.