The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What is a good and durable overdrive transmission to use behind a bigblock chevy?

**HO455** · 06-24-2019, 10:58 AM

There shouldn't be any cutting of the truck to install the gear vendors unit. Other than the driveshaft. They are pretty rugged pieces I know of several low 10/high 9 second cars that run them without issue. Some of the differences between the two come down to the 4L80 will require an aftermarket computer to operate which gives you laptop adjustment capability. The 4L80 will also have a lock up convertor, but with the engine your installing I would assume you will forgo that for a high stall convertor. A T400 with gear vendors will be cheaper to repair down the road. Gear Vendors has been around since the 70's or longer. Here is a link to more information.

Happy Shopping!

http://67-72chevytrucks.com/vboard/s...d.php?t=764137

06-24-2019, 10:58 AM	#8
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,608	Re: What is a good and durable overdrive transmission to use behind a bigblock chevy? There shouldn't be any cutting of the truck to install the gear vendors unit. Other than the driveshaft. They are pretty rugged pieces I know of several low 10/high 9 second cars that run them without issue. Some of the differences between the two come down to the 4L80 will require an aftermarket computer to operate which gives you laptop adjustment capability. The 4L80 will also have a lock up convertor, but with the engine your installing I would assume you will forgo that for a high stall convertor. A T400 with gear vendors will be cheaper to repair down the road. Gear Vendors has been around since the 70's or longer. Here is a link to more information. Happy Shopping! http://67-72chevytrucks.com/vboard/s...d.php?t=764137 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377