Bolt sizes

[Stewart]

Any one know what the sizes and thread of the bolts that hold the transmission to the block. I remember it being a somewhat oddball size. Also the bolts that hold the starter in and finaly the bolts that hold the alternator bracket to the block

Thanks

 

[tony barnhill]

Don't know the sizes but do you need some?

 

[DrEntropy]

IIRC, they're all fine thread. 5/16" seems to be my recollection. I'd not do this for many folk, Stew... If you can hold off 'til the AM t'morrow I'll confirm. /bcforum/images/%%GRAEMLIN_URL%%/smirk.gif

 

[Steve_S]

5/16" sounds very familiar.

 

[Stewart]

I'd apreciate it DrEntropy. I should be good on finding the starter and alt bracket bolts tony but I think the fun part is going to be finding the right lenth bolt to mount up the block to an engine stand. I had a hard time finding them last time and I'm kicking my self in the butt for tossing the last set I had.

 

[DrEntropy]

Here ya go, Stew: 5/16" NF for the tranny: top two are 2", three for the side are 2-1/2" and the bottom two are 3". I've used Nylok nuts on mine. Starter has shouldered 1/2" NC, 2" long to thread into the transmixer bell-housing... Keep in mind this is a 3-synchro bolted to an 18GB. YMMV. /bcforum/images/%%GRAEMLIN_URL%%/wink.gif

 

[DrEntropy]

*BUMP!* /bcforum/images/%%GRAEMLIN_URL%%/jester.gif

 

[David_DuBois]

... Keep in mind this is a 3-synchro bolted to an 18GB. YMMV. /bcforum/images/%%GRAEMLIN_URL%%/wink.gif

I don't know the length differences, but the same bolts are used for the later 4 syncro transmission mounting - 5/16 NF for the transmission to engine back plate and 1/2 NC for the starter.
Cheers,

 

[Stewart]

Thanks DrEntropy.

 

[DrEntropy]

No biggie... I did it before the fire ants were awake. /bcforum/images/%%GRAEMLIN_URL%%/smirk.gif

 

[tony barnhill]

<div class="ubbcode-block"><div class="ubbcode-header">Quote:]5/16" NF for the tranny: top two are 2", three for the side are 2-1/2" and the bottom two are 3". [/QUOTE]
Just checked some I took off a '73 18V/4-syncro box...they're the same.

 

[DrEntropy]

/bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif That's three... a consensus... Good to go!