Re: Who is the person that makes the adapter ring for a truck bell housing?
Here is the post from car craft, I think you will need to call Novac for the part i dont see it listed. BillOriginally Posted by MrBill66Malibu
i just found the post, I hope this helps 2025.1
I recently put a small block 400 with Super T10 transmission in my 1981 El Camino. I used the FW 101, 14", 168 tooth flywheel and a Ram 11" clutch part #88764 from Summit. The Super T10 and Muncie car transmissions have a 4 11/16" (4.68) diameter front bearing retainer, and the 3899 621 aluminum bellhousing is the only one available to cover the larger flywheel and clutch and fit the smaller retainer. The problem is GM only cast about 100,000 of these 621 bellhousings back in the 60's, so they are very rare and expensive today ($300+ on eBAY).
However, GM cast literally millions of the 460 486 bellhousing to cover the larger flywheel and clutch in 1970's light trucks, both 6 and 8 cylinder. The problem is the Muncie SM 465 truck transmissions had a 5 1/8" (5.125) front bearing retainer, so you can't use it with the smaller car transmissions.
Luckily, a 4 11/16" x 5 1/8" bushing is available from Novak part # BR-4 (about $40) at www.novak-adapt.com
I bought one of the adapter rings, and used the truck bellhousing, which cost $25 at my local salvage yard, where they use the truck bellhousings for door stops.
The 486 dust cover is GM part #340 254.
Good luck, Robert
this was from Car Craft, I think this is the tranny you have and this bellhousing will work. Bill