700 R4 Transmission Specialists


We Ship Worldwide

Our shop is located at 36320 Grassy Hill Lane, County Rd. 44A, Eustis, Fl.



We now offer In House complete Street Rod Overdrive 

Conversions & Installations on all makes and models,

including 68-81 Corvettes and all Camaros,

plus early Mustang A.O.D. conversions. 

We are also now offering 4L80E's/4L60E's/4L65E's.  

 Stock replacements to high performance applications.

Stand alone computer available.

We also rebuild all antique cast iron automatics, 1940 and up.


We now have all the components for your mechanical speedometer needs!

Click Here for Speedometer components



A FEW NICE STREET RODS With OUR 700R4 Transmissions

  4L60E / 4L65E

36320 Grassy Hill Lane

County Rd. 44A

Eustis, Fl. 32736

Phone  407-880-2882

Contact us at


About Fourth Gear.....

Fourth Gear Inc. is a family owned business specializing in overdrive transmissions for Street Rodders, Corvette Conversions, and all other stock and custom applications. With 30+ years of transmission experience, our specialty is 100% customer satisfaction.


Street Rod


Custom Built by

Fourth Gear Inc.



Only  $1245.00





700 R4 Transmissions

At Assembly


Copyright © 2002 Fourth Gear Inc. All rights reserved. Revised: 08/19/2013

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