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Old 12-28-2015, 01:56 PM   #4 (permalink)
oil pan 4
EV convert
 
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Location: NewMexico (USA)
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If its a GM car then it will likely have the 10 bolt 7.5 or 7.62 inch ring and pinion gear.
Then your only options for numerically lower new gears is 2.73 gears or 3.08 gears.
The numerically lowest I am aware of for the 10 bolt was 2.54 gears, but I know of no one that makes them.
The lowest numbered gear I think you would want to have on a car like that is a 2.73:1.

If you go with an older GM car again it will already have some what small brakes up front.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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