Re: Axle and gear ratio interchange confusion

[jgray_55@xxxxxxxxx]

I may be wrong(someone correct me if so)...but from what i learned this last year...the center carrier/or the housing is made diferent for the higher geared (lower numerical ##)ratio ring/pinion to fit. Hope i said it as i meant?On January 14, 2005 Marty Bricker wrote:

> I need a 3.54 rear end to take advantage of the cam I
> want to use in a 401 buildup I'm doing.  There are a
> couple of sets listed on Ebay but they say they will
> not fit a rear end with 2.87 gears.  I broke out my 74
> TSM and I'm really confused now.  Under 'Axle and
> Propeller Shaft' it lists the 2.87 ratio rear end as
> having the same size gear (8-7/8") as the 3.15 and
> 3.54.  In the 'axle ratio availability' chart for a
> 304 engine (original one in my Jav/AMX) with a 998
> tranny it lists the 2.87 as standard and the 3.15 as
> optional with a 8-7/8 axle.  It also lists the 3.15 as
> standard and the 3.54 as optional with the same tranny
> and axle for the Matador and Ambassador. All of the
> listings for a 3.15 as standard have the 3.54 as
> optional and all are with the same 8-7/8 axle.  To me,
> it would follow that if a 3.15 is optional and will
> replace a 2.87 and a 3.54 is optional and will replace
> a 3.15 then a
> 3.54 will also replace a 2.87.  Someone please explain
> the error of my logic...ie,what is the difference?
> Thanks.
> Marty
> 
> 
> 
> 
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