Convert bolts?

I got a converter from UC? The converter is a turbo 400 converted to a C6. It appears the converter flanges are tapped for bolts. Where can I find these bolts at

If I'm not mistaken,.......the bolts are a 7/16-20".

AND,....
FWIW,..... 7/16" seem to be a little more difficult to find, as most places like Lowes, Home Depot, & Tractor Supply jump from 3/8" to 1/2".

Your best bet is a local Fastener company that specializes in industrial supplies,.......
If this is not an option, you have online places like McMaster Carr, Grainger, MSC, Fastenal and etc,......

I'd rather have a higher quality bolt, I'm going to look into ARP for sure but who are the other performance bolt manufacturers.

Grade 8 bolts came with my converter from PTC they are fine tread I know Fastenal carry them they are 7/16 don't remember the length

jones wrote:I'd rather have a higher quality bolt, I'm going to look into ARP for sure but who are the other performance bolt manufacturers.

Grade 8 is plenty good enough.

Don't get hung up on the ARP hype.

Don't get me wrong,.......I have a bunch of ARP fasteners in my rig,...... BUT,... for the most part, it's overkill. ARP stuff is great for Main & Head Studs,....as well as Rod Bolts, BUT,.......other than that,..... standard Grade 8 (OR,... even Grade 9) are perfectly fine.

Got any extra flywheel bolts lying around?

maverick wrote:Got any extra flywheel bolts lying around?

exactly what i was thinking!

maverick wrote:Got any extra flywheel bolts lying around?

So those are the same sizes?

jones wrote:

maverick wrote:Got any extra flywheel bolts lying around?

So those are the same sizes?

Yup.

While in the topic of bolts, anyone know where I can find the factory style bolts? I'd rather use those than have to use a washer.

jones wrote:While in the topic of bolts, anyone know where I can find the factory style bolts? I'd rather use those than have to use a washer.

Any dealership probably has 'em but they ain't free.  Look in the junk yards.  And don't be stuck on bolts from a BBF...Most common U.S. made stuff used fine thread 7/16" bolts on their flywheels. The damn things are everywhere.   Also, no harm in adding a grade 8 flatwasher...and maybe a lil' dab of blue Loctite.

If you go boneyard shopping, put a 7/16 fine thread nut in your pocket. It's easy to mistake a metric bolt for what you want if it's been removed from the engine.

I have always used red loctite on the flex plate bolts.

Here is a picture of the converter. It's hard to tell in the photo and I will check but they almost look like course threads. I hope those welds hold! LoL

This is a picture of the gear box and transmission without the extension. The gear box is .875 away from bolting to the extension. I will have to cut the output shaft .900 or make a spacer .900 thick. I'm pretty sure I am going to cut a spacer out on the water jet and finish it on the lathe.

I'm also trying to decide if I want to use 1350 yoke's , 1410 or 1480's. If I had to guess on what would break first I say the transmission output shaft.

On a deal like that, U-joint alignment is gonna be key to keeping all the parts in place.

FYI,
The bolts I said I was look for are found. They are called "flange bolts" or "frame bolts".

I wanted to say that I am really pleased with Lenny, he read my post and gave me a phone call to answer my question! I can't wait to get this project driving.