whats the difference between d300 and m20. which ones better and why ? which ones better behind a th400 ?
whats the difference between d300 and m20. which ones better and why ? which ones better behind a th400 ?
2007 durango
79 cj7 401 t-18 488 s lockers both ends 35 s
97 F350 crewcab 4x4 power stroke banks equipped. just added the exh. brake. I LUV MY TRUCK
94 WRANGLER
90 WRANGLER BASKET CASE
a 300 is definately better in all respects but a 20 hold up fine to the same amount of power,
300 2:46-1 low
20 2:00-1 low
A 20 can be adapted to a th400 with a stock jeep adaptor found in certain FSJ's 67-73'. I run one in my 85' with a bulltear upgraded th400 adaptor. The factory adaptor is prone to breakage when it is not properly tightened. A dana 300 to th400 adaptors are made by Novak and Advanced adaptors and are priced from $439-550 same as the th400- dana 20 adaptor made by then as well.
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The one advantage that a Dana 20 has over a 300 is that it uses a shorter adapter in most cases, which will yield a shorter drivetrain (a plus on a SWB vehicle with a lift.)
my th-400 and MD 20 tc needs a 20" drive shaft in a cj-7
best ever 11.669 @ 112.33 mph in 1/4 mile on 33 x 10.50 slicks and 4" lift / 7.358 @ 93.03 mph in the 1/8 mile
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