Yes 742 and 489 are popular options (the last 3 numbers in the casting stamping). There's an historical reference to
consider: the racers like the Ramchargers back in 1964 used the 741. It's was not just in small CI or A-body cars.
Sounds like you have a flange axle rear end already installed, if I read your email correctly. Correct? One option, then, is
run what you have and see how it goes. You can change it later if need be. You'll need to decide the gear ratio and
whether you want SureGrip when you do the swap.
Thanks,
Gary H.
> -------Original Message-------
> From: Jimmy Peavy
> or a 742 chunk
>
> On 6/14/19, wrote:
> > What you have is a ....741 rear. Nothing incorrect about that. The
> > preference is the ...489 rear pumpkin.
> > Pull the rear wheel covers or hub caps off and see if you have a nut and
> > cotter pin on the end of the axle. That's what should be there. They changed
> > to the flanged axles ends in 1965 which I (and I think most others)
> > prefer.
> > Akron Don Gallimore
> >
> > On Friday, June 14, 2019, 1:29:21 PM EDT, Butch < t>
> > wrote:
> >
> > First....thanks for being here!!
> > I'm getting serious about restoring my 1964 Plymouth Sport Fury. I have a
> > date correct 426 Max Wedge for it and an A-727 floor shifter. I had a
> > question about tire sizes, (what is the largest tire I can fit under the
> > rear wheel wells), found the answer I wanted immediately here on the forum.
> > Turns out the previous owner had done that work for me.You guys/gals are the
> > best.
> > Now, on to my question: The car has a 2070141 rear end in it. If I've ID'd
> > it correctly, this is a rear end designed for a smaller CID motor, typically
> > an A body.
> > 1. I don't want to change the end to end length of the rear axle assembly.
> > The steel wheels and tires on the car are "perfect", as is.I don't know what
> > the rear end is out of, but it's not a B-body tapered axle....and I don't
> > want a B-body tapered axle. 2. Can I simply change the pumpkin out to a
> > different one? A heavier set of rear gears? 3. If so, what should I be
> > looking for? 4. If not, what do you recommend?5. Feel free to educate me.
> > Thanks all./Butch
> >
> > --
> > --
> > --
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