3/8" -16 1 1/4 or 1 3/8 long. 1 1/2 if you run a 1/4" midplate

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Originally posted by 1leg:
3/8" -16 1 1/4 or 1 3/8 long. 1 1/2 if you run a 1/4" midplate

After a trip out to the shop to measure, I concur.

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Originally posted by Big Steve:

quote:

Originally posted by Goob:

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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

You didn't specify the length.

So 1,1/2 by 3/8 , course thread all the way around ? This would be a Reid cased tranny on a dragster.

quote:

Originally posted by Mike Frizie:
So 1,1/2 by 3/8 , course thread all the way around ? This would be a Reid cased tranny on a dragster.

Since its an aftermarket case you need to check what length is needed yourself.....Silly to add that piece of information at the end..

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Originally posted by imakehp:

quote:

Originally posted by Mike Frizie:
So 1,1/2 by 3/8 , course thread all the way around ? This would be a Reid cased tranny on a dragster.

Since it’s an aftermarket case you need to check what length is needed yourself.....Silly to add that piece of information at the end..

Was stupid. Sorry

quote:

Originally posted by Mike Frizie:

quote:

Originally posted by imakehp:

quote:

Originally posted by Mike Frizie:
So 1,1/2 by 3/8 , course thread all the way around ? This would be a Reid cased tranny on a dragster.

Since it’s an aftermarket case you need to check what length is needed yourself.....Silly to add that piece of information at the end..

Was stupid. Sorry

Mike, I was able to point that out because I've never done anything dumb.....

quote:

Originally posted by imakehp:
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

Actually, yes, if it’s an Sfi case or bellhousing. The Sfi rating and the ability to withstand an explosion are affected by bolt type. As far as I know, they are only valid if you use socket head cap screws with no washers.

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Originally posted by BJs Wild Ride:

quote:

Originally posted by imakehp:
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

Actually, yes, if it’s an Sfi case or bellhousing. The Sfi rating and the ability to withstand an explosion are affected by bolt type. As far as I know, they are only valid if you use socket head cap screws with no washers.

Except when I posted that, we didn't know it was an aftermarket/SFI piece. So although you may, or may not, be correct, it didnt apply at the time...

I use the stainless Allen head bolts with washer. As for length I measure to get what fits that motor. I also try to get as much thread depth as I can on them. I will clean out the threads on the block so I can use all that is available there. Especially on my aluminum blocks because I do not want it to pull out threads.

I also like to use really long dowels on the motor to keep it lined up good and solid.

I just pulled the Reid case glide out of my Nova last night. This car has NO MIDPLATE. I use black flange-head bolts and also use a flat washer beneath the head.

The top 4 bolts are 1.5", the bottom 2 bolts are 2".

In my little hardware box, I did find 2 top trans bolts from my dragster that I removed when I switched to the Danny Nelson 'over the trans' coil mount. Those bolts were 1.75" which would effectively be the same as what I use in the Nova, but accounts for the extra 1/4" midplate.

TLDR - for a Reid case with 1/4" midplate I would use (4) 1.75" bolts and (2) 2.25" bolts.