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follow this link and scroll way down for lots of rearend info
http://www.chevytrucks.org/tech/ifs&rearend.htm
looks like the 47-55.1 rearend is 60'' wide only 2'' narrower than the
55.2-59 trucks at 62''
i run a gen3 trans am rearend that is 61.5'' in my 58 w/ 3.27 gear, disc
brakes and posi
however... because i am lowered with the mustII, rear axle flipped on top
of the springs with wider wheels and tires
i have a hard time getting my rear tires off. it requires jacking the frame
not the axle
and wiggling the tire out from in between the hub and fender, not pretty
but no damage yet :)
if your rear axle is 60'' wide i recommend going with a 58'' max width axle
just to avoid my problem
if you plan on lowering your truck, since you have the mustII i figure it's
lower than stock
if you want high mpg then go with a a 3.25 to 3.50 ratio, lower than 3.00
you may loose the power band
as for your trans, definitely go with the 700r4, though the 200r4 is just
as good
with the 700r4, 3.27 ratio and 350 sbc i get 20 mpg on the highway
i do have the gm ramjet 350 (350hp and 400 ftlb) so my power band is a
little better than most sbc
i can still burn the tires thru 3 gears if i want to
http://s306.photobucket.com/user/_ogre/media/YellowTrk-9.jpg.html
http://i306.photobucket.com/albums/nn255/_ogre/YellowTrk-9.jpg
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<div dir=3D"ltr"><div class=3D"gmail_extra">follow this link and scroll way=
down for lots of rearend info=C2=A0<a href=3D"http://www.chevytrucks.org/t=
ech/ifs&rearend.htm" target=3D"_blank">http://www.chevytrucks.org/tech/=
ifs&rearend.htm</a></div><div class=3D"gmail_extra">looks like the 47-5=
5.1 rearend is 60'' wide only 2'' narrower than the 55.2-59=
trucks at 62''</div><div class=3D"gmail_extra"><br></div><div clas=
s=3D"gmail_extra">i run a gen3 trans am rearend that is 61.5'' in m=
y 58 w/ 3.27 gear, disc brakes and posi</div><div class=3D"gmail_extra">how=
ever... because i am lowered with the mustII, rear axle flipped on top of t=
he springs with wider wheels and tires</div><div class=3D"gmail_extra">i ha=
ve a hard time getting my rear tires off. it requires jacking the frame not=
the axle</div><div class=3D"gmail_extra">and wiggling the tire out from in=
between the hub and fender, not pretty but no damage yet :)</div><div clas=
s=3D"gmail_extra"><br></div><div class=3D"gmail_extra">if your rear axle is=
60'' wide i recommend going with a 58'' max width axle jus=
t to avoid my problem</div><div class=3D"gmail_extra">if you plan on loweri=
ng your truck, since you have the mustII i figure it's lower than stock=
</div><div class=3D"gmail_extra">if you want high mpg then go with a a 3.25=
to 3.50 ratio, lower than 3.00 you may loose the power band</div><div clas=
s=3D"gmail_extra"><br></div><div class=3D"gmail_extra">as for your trans, d=
efinitely go with the 700r4, though the 200r4 is just as good</div><div cla=
ss=3D"gmail_extra">with the 700r4, 3.27 ratio and 350 sbc i get 20 mpg on t=
he highway</div><div class=3D"gmail_extra">i do have the gm ramjet 350 (350=
hp and 400 ftlb) so my power band is a little better than most sbc</div><di=
v class=3D"gmail_extra">i can still burn the tires thru 3 gears if i want t=
o=C2=A0</div><div class=3D"gmail_extra"><br></div><div class=3D"gmail_extra=
"><a href=3D"http://s306.photobucket.com/user/_ogre/media/YellowTrk-9.jpg.h=
tml">http://s306.photobucket.com/user/_ogre/media/YellowTrk-9.jpg.html</a><=
br></div><div class=3D"gmail_extra"><a href=3D"http://i306.photobucket.com/=
albums/nn255/_ogre/YellowTrk-9.jpg">http://i306.photobucket.com/albums/nn25=
5/_ogre/YellowTrk-9.jpg</a><br></div><div class=3D"gmail_extra"><br></div><=
/div>
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