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12-06-2021, 11:41 PM #1Member
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What gearcases interchange with 300X?
Would a sportmaster off a 2.5 promax fit on a 300x? I was under the impression that it wouldn't but I've heard of people running a 2.5 case on their 300x.
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12-07-2021, 09:41 PM #2
negative. need a 3.0 liter case
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12-07-2021, 09:45 PM #3
But there are 2.5L and 3L Sportmasters.
Let's just go ahead and make America great again!
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12-08-2021, 01:59 AM #4
Depends on the mid. If factory then everything above is correct. If someone was building a 300x 15" then its possible they made adaptor plate to mount the 300x on a 15" 2.5 mid and then ran the 2.5 lower with a 13 spline driveshaft. I dont know if you wanted to get that deep into it, but its possible to do, but not practical to do.
For a stock 20" 300x the 3.0L sportmasters (250xs, 300xs, 300x etc.) will all fit. So will the 250 proXS torquemasters and standard fishing lowers.
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DangerNewb thanked for this post
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12-16-2021, 08:27 PM #5
The ones listed in my manual are the fleet master, sport master, and torque master, all 3.0 cases
97 xb2002 15" 300x w 1.62 sporty
( Haulin Bass) (108 mph so far
(Rip. Whiteally02) -dad
They call it the American dream, to bad you have to be asleep to believe it. - George Carlin
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