08-04-2002, 06:56 AM
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Senior Club Cobra Member
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Join Date: Jul 2000
Location: Las Vegas,
NV
Cobra Make, Engine: ERA 427 SO
Posts: 1,126
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Not Ranked
AZ, The main external diff between BB and SB toploaders is the size of the input/output splines; along with internal changes, the BB toploaders have a higher torque capacity. The cases may be the same or very similar. Check with David Kee.
I was told that the truck toploaders have a low-low first gear (grandma). They could no doubt be used behind a 428, but you might want to add a drawbar so you could plow or pull stumps with it (   ).
The small toploader can/has been used behind 428s, and would do okay for mild street use, as long as the tires didn't hook up.
Comments, guys?
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Ken
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