Speed Gems ECOTEC Naturally Aspirated to Chevy Automatic 700R4 Instructions

June 3, 2024
Speed Gems

Speed Gems ECOTEC Naturally Aspirated to Chevy Automatic 700R4

Disclaimer – Please Read Carefully

WARNING: Due to the nature of engine and transmission swaps, we cannot guarantee fitment into your vehicle without having to make mild to extensive modifications. This should be considered when starting your project. It is highly recommended to take the time to research any potential issues you may face prior to starting your build. There are numerous forums and websites that can help and give insight into any potential issues involved in the project. This project is not for a novice mechanic. If an individual is not confident in performing such extensive vehicle modifications, Speed Gems recommends finding a capable shop for assistance.

Prior to and during installation of your new Speed Gems Transmission Adapter Kit, always ensure to:

  • Clean everything, including all components and surfaces.
  • Use proper torque and Loctite all bolts.
  • Do not force anything and begin all bolts by hand before using any tools. This will prevent cross-threading.
  • Check all bolt clearances.

We try to make everything as simple as possible to help you, but the ultimate responsibility as to the assembly of the kit is up to the installer.
If you have any additional questions, please contact us by phone 763-767-4480 during business hours or email [email protected] at any time.

COMPONENTS INCLUDED IN KIT

(1) Adapter Plate – ECOTEC to Chevy

(1) Crank Adapter
(1) Torque Converter Drive Plate
(2) SHCS M12-1.75 x 35
(4) SHCS M12-1.75 x 55
(4) LOCK WASHER M12-Z
(6) HCS 3/8-16 x 1-1/4
(6) 7/16-20 x 3/4 Flexplate Bolts
(6) SHCS M10-1.25 x 30
(4) HEX NUT M12-1.75
(3) EXTRA THICK HARD WASHER x 7/16
(3) FLAT WASHER x 7/16

APPLICATION NOTES & INSTRUCTIONS

  1. This Kit uses the stock ECOTEC Starter and Flexplate. NOTE: This Kit can also be used to install various Manual Transmissions by bolting on a 1985 & older Flywheel from a Chevy 350 engine. The crank adapter is machined to also accept the stock Chevy Flywheel bolt pattern.
  2. The stock ECOTEC starter bolts to our 1” thick Adapter Plate.
  3. The Crank Adapter bolts on top of the stock ECOTEC Flexplate so that the original starter engages the original ring-gear. This allows for the original engine balance to be retained.

Speed Gems would like to THANK YOU for purchasing our products!
We would love to see pictures of our products installed on your Hotrod. Please tag us on our social media or send a picture to [email protected] and we will get your project posted on our website.

Speed Gems Transmission Adapters
806H S. Division St., Waunakee, WI 53597
[email protected]
763-767-4480
Copyright © 2021 Speed Gems Transmission Adapters. All rights reserved.

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