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find a Chevy 12 bolt rear end or a built up 8.5 rear end.
They didn't have a 4.6L engine. They had either a 2.2L or the 4.3L.
That all depends on the size of the rearend itself, the 3.46 gear has nothing to do with it.
3.43 Automatic and 3.73 Manual
yes
will a read end from a 78 trans am fit uder my 89 GMC seirra
A 393 gear rear end would be quicker than a 300 gear rear end but the 300 gear rear end would be faster in the long run.
no. but it will fit on a garbage truck
You can change at least half of the fluid in the rear end at Tuffys.
You will be quicker not faster.
a ford 9 inh is under all lincolns in the 70's
When you increase horsepower, there's typically a torque increase which goes along with it. You could also replace your rear end gears with taller gears.