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Many of the older cars did not have a tunnel/floor pan designed for today’s larger modern overdrive transmissions.  But that doesn’t mean you can’t get it installed!   Check out some of the solutions we’ve seen to change the transmission tunnel to allow it to accomodate.

While there are only a couple of cars shown thus far, the principle of the project will be the same regardless of what car you have.  Check out the individual pages on this web site for swap details on your specific application.

69 Chevelle - 5sp, simple solution  (same for 64-72 GM A-Body cars) - 4 pics

69 El Camino - 6sp, deluxe solution - 5 pics

71 Chevelle - 5sp, deluxe solution  (same for 64-72 GM A-Body cars) - 17 pics

70 Mustang - 5sp, very deluxe solution - 30 pics  (and from Australia!)

Here’s 2 examples of what you’ll see on these pages:

Image belongs to Matt Leuck, 71 Chevelle

The following is a GM TKO into a ‘66 Chevelle, with an awesome fabricated tunnel cover.

Image belongs to Lance Warzbacher

The following 2 are from a ‘69 Chevelle SS, originally a 4sp car.  It gives you an idea of what you need to do with the tunnel to get this trans to fit in properly.

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This website is a comprehensive collection of information regarding the installation of TREMEC transmissions into various vehicles. Material contained in here may be reproduced for PERSONAL USE ONLY. No material may be redistributed in electronic or printed form without the written permission of Brad Wedan (owner). Owner believes to the best of his knowledge this information to be correct, however no warranty is made as to its accuracy. Owner also disclaims any liability for financial loss, property damage or injury in connection with use of this information. Not affiliated with, endorsed or compensated by TTC, or any sanctioning body mentioned within. Any trademarked names are property of their respective trademark holder and are used for identification purposes only. Portions of this website may be copyrighted by other individuals or organizations.

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