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Thread: 318 engine swap rear end suggestions??

  1. #1
    ThatdudewiththeAspen
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    318 engine swap rear end suggestions??

    Hey guys I have a 79 Aspen. I'm going from the stock 225 to a 318. I have a few questions. As far as will my stock tranny bolt up to the 318 and what doner car I need for the rear end. Thanks in advance.

  2. #2
    Super Moderator 77rr2x4s's Avatar
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    225 trans will not bolt up to a small block, the rear axle will work but most likely it is a 7 1/4 rear which is kinda on the weak side

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    Aspen and Volare Super Member doublechaz's Avatar
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    My 318 came with a 7 1/4 rear in it.

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    Aspen and Volare Senior Member 7T8 Custom's Avatar
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    So did mine but than I blew it up. Twice. Now has a SG 8 1/4.

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    Super Moderator 77rr2x4s's Avatar
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    Yea, some 318 cars came with 7 1/4. Most don`t make it thru their life without needing a repair. Especially the spider gears.

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    Aspen and Volare Super Moderator aspen79's Avatar
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    My car originally had a 7 1/4" along with the disappointing 90hp E24 S6 and 4 speed O/D, and even that managed to break the spider gears at about the 80,000 mile mark. Just saying......................(And no I did not abuse it either, seriously).
    1979 Aspen Sunrise 500". Bought in 1987 with 72,000 miles and a mighty E24 California emission 90hp leaning tower of power/4-speed
    1996 Dakota with a torque monster (not) 3.9L V-6 and automatic owned since 1998. Now demoted to winter duty
    2008 Ford Mustang V6, the new summer daily driver

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