What you guys use? just bored and wondering. Post recommendations below.

Std 6 point Grade 8 bolts with lock washers

I use Flange Bolts

Grade 8 bolts except the 2 at 10:00 and 2:00 which I install a little extra long studs to aid with installation...get the trans close and slide it up onto the studs..

I greatly respect Big Steve and know from experience that he builds high-quality race cars. However, I'm afraid I have to disagree with him. I rarely use lock washers [I do not like how they dig into the metal] As stated above, in my experience, the best options are a flanged head bolt or a standard bolt with a washer. Grade 5 is entirely acceptable. With an OE Powerglide case, the two lower bolts are slightly longer, so watch for full tread engagement in all positions.

guess odd man out. Like that new. I use studs.. IMO it makes lining everything up easier

Wide, studs are fine except in door cars with the original floor, where clearance would not allow them to do so.

grade 8 flange bolts

quote:

Originally posted by seabass:
grade 8 flange bolts

Remember the length of the bolts?

This message has been edited. Last edited by: Mike Frizie,

quote:

Originally posted by Mike Frizie:

quote:

Originally posted by seabass:
grade 8 flange bolts

Remember the length of the top of your head?

1 1/2" iirc.

I use the Tractor Supply grade 8 hex head, no washer or lock washer.
O.E.M. never had a washer or flange on any transmission bolts, but I'm not at all opposed to the flange bolt idea.

Longer block dowels work well for a guide in most door cars.

Black oxide flange bolts here.

I use grade 8 flanged bolts, then a high quality lock washer, then a flat washer with the rounded edge facing the transmission (so it doesn't damage the face of the transmission). This spreads the tension over a wider surface area. The transmission (the shear weight) doesn't rest on any part of the thread and no part of the threaded area enters the block.

Aircraft/space craft assembly rules.

Bob

I guess I have been using the wrong bolts the past 30 years

Flanged or not , anyone remember the bolt lengths?

Grade 5 or greater flanged bolt would be correct for this application.

I never use lock washer, To many times pulling old cars apart and seeing them broke in half.

Loctite or poly lock nuts on race cars.

quote:

Originally posted by Big Steve:
I guess I have been using the wrong bolts the past 30 years

Well, thanks for that informative comment.

Care to share your wrong choice with the rest of the class?

quote:

Originally posted by Mike Frizie:
Flanged or not , anyone remember the bolt lengths?

I could go measure one that I have been using I guess, but again, if I remember correctly, it's 1.5"

Sorry, I’ll read one of these days. It was posted a while ago.

quote:

Originally posted by Goob:

quote:

Originally posted by Big Steve:
I guess I have been using the wrong bolts the past 30 years

Well, thanks for that informative comment.

Care to share your wrong choice with the rest of the class?

First reply in the thread Goob

Is there really any right or wrong bolts? The dowels do all the heavy lifting/load bearing.....Sure I wouldn't use some cheap ass WangChang bolts but com'on people