GM101 GMC STRAIGHT-6 (1939-62) TO CHEVY V8 AUTOMATIC TRANSMISSION
Speed Gems
Please specify the year and displacement of your engine, and whether the crankshaft bolts are 7/16” or ½”. We will need this information to get you...
View full details
All kits made from High-Quality USA Aluminum and Steel. Proudly manufactured in the U.S.A.!
All kits made from High-Quality USA Aluminum and Steel. Proudly manufactured in the U.S.A.!
Please specify the year and displacement of your engine, and whether the crankshaft bolts are 7/16” or ½”. We will need this information to get you...
View full details
We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand. Please allow 4–8 wee...
View full details
We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand. Please allow 4–8 we...
View full details
We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand. Please allow 4–8 wee...
View full details
This cable has the standard GM thread on the one end and 1950's era thread, that was common on all car lines, on the other. Example: Putting a 700R...
View full detailsSpeed Gems
806H S Division Street
Waunakee, WI 53597
Phone: +1(763) 767-4480
Email: sales@transmissionadapters.com
Subscribe to our monthly newsletter to stay up to date with the latest news and happenings here at Speed Gems
Copyright © 2026 Speed Gems.