(now) tracking an .80 gearset?? (was): How can I tell if my FF is<81 or later?

[ats at longcoeur.com (Patrick Bureau)]

Nicely done Dan... One great email for the archives right there bud !

On the topic of gears, I have been looking for a .80 5th for quite some time
now, I know the dot.org web site indicates it to be found ob AMC/DFQ or CHE
transmissions, with a rather cryptic side note "from '93 115hp", and for
some reason I have been really unsuccessful in tracking one of those
trannies down there (remember I like in Ford country down here in Texas),
anyone know what cars these trannies where installed in ? And does anyone
know of a 5th set .80 for sale anywhere at a reasonable price (no 250$ is
not reasonable).

-
ATS - Patrick Bureau - http://ats.longcoeur.com - 
A1 eBay Sales: http://tinyurl.com/22e5b
 

->-----Original Message-----
->From: scirocco-l-bounces@scirocco.org 
->[mailto:scirocco-l-bounces@scirocco.org] On Behalf Of Dan Bubb
->Sent: Saturday, April 10, 2004 6:14 AM
->To: Mark; 'List'
->Subject: Re: How can I tell if my FF is <81 or later?
->
->I've got an FO w/.76 and an FN w/.71 so, unfortunately the 
->serial numbers don't do us any good.
->Pulling the 5th gear housing and looking at the gear is the 
->most positive way to tell. You only have to remove 6 bolts 
->and tap the housing off with a hammer.
->Peter has the gaskets seperately for like $7 so you don't 
->need to buy the whole gasket seal kit if you bung up the gasket.
->The gear count for the .76 ratio is 62/44.
->The gear count for the .71 ratio is 38/27.
->A quick little tooth count is all it takes.
->While you're swaping 5th make sure the gear on the pinion 
->shaft is a tight fit on the splines. Every broken 5th gear 
->that I've seen (only 3 so it's not statistically relavant) 
->wobbles on the splines.
->Don't know if it's the wobble on the splines that causes the 
->teeth to break or the teeth breaking that causes the gear to 
->wobble on the shaft, but I would not install a 5th gear that 
->isn't tight on the splines in any case. Especially if you 
->have bunch of power.
->On yet another note, the tooth count for the .76 ratio is 
->really high (108) so it has really small teeth that aren't 
->that strong. The .75 is a stronger set at 89. The .71 is 
->stronger yet at 65 if you have the engine to pull it.
->So, guess which 5th gear is going in the nephew's JH junkyard 
->turbo Rocco!
->Oh, I forgot. There are two different .71 gear sets out there 
->(according to ETKA). The other set has a gear count of 52/37.
->OK! That's all I know about this. And I mean ALL!
->Dan
->
->