tranny swaps

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Nov 12, 2003 | 10:49 PM

300inline6

Thread Starter

Junior User

Joined: Nov 2003

Posts: 79

Likes: 0

From: Beaverlodge, Alberta

tranny swaps

I'm looking for info on trannies for my '78 F-150 2wd with a mildly built up 300-6. I have a NP435 in the truck already but i find that the spacing between the top three gears are fairly far apart and i have to take my engine to the max to get any power in the next gear. I would love to find a tranny with a closer gear ratio and was even thinking of a overdrive transmission like a tr3550. I like this tranny because i can reposition the shifter so it would work well with a truck. Is there a lot of modifications i would have to do to install one of these on my engine? or would a Ford AOD be a better choice? if so is there a lot of modifications to install one of those on my engine? Any help with these questions would be appreciated.

Nov 13, 2003 | 03:18 PM

javi2001

Posting Guru

Joined: Apr 2003

Posts: 1,153

Likes: 1

From: Venezuela

AOD will be a good idea, but you should check the rear axel ratio, it should be 3.55 or higher.

Or if you love electronics like me you can try a challenge upgrading to E4OD...

Regards;