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Discussion Starter · #1 ·
Greetings all. Thanks for such a great site. I am currenty in my 3rd FSB. This one is my oldest so far. I have an '81 with 302, and an automatic 3 spd tranny. I would love to grab an overdrive tranny out of another truck from the junk yard here. They have a 50% off sale the last weekend of every month. (I replaced a busted 4spd in a '67 F250 for only $42)

What should I look for? Any particular year better than another? Older better than newer?

Obviously i need something from a small block 4X4, is there anything in particular i need to look for? What should I take from the donor? Will i need the linkage and all? Or just the trannY?

I ran a search, and read and read, but I wasnt getting anywehre. Any help you can offer would be appreciated.

Thank you all.

GrassNinja
 

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Discussion Starter · #2 ·
ok a quick question in response.

that threat listed the 4spd as "light duty". i want another gear, better mileage. Am i giving up a lot since I have the "heave duty" in my current C6?
 

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Another thing to consider on that one is that you need either the factory fuel injection or an aftermarket controller for an E4OD, as its electronically controlled. An AOD is the only other option for an automatic if youre sticking with the carb.
 

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Another thing to consider on that one is that you need either the factory fuel injection or an aftermarket controller for an E4OD, as its electronically controlled. An AOD is the only other option for an automatic if youre sticking with the carb.
you could use a stand-alone computer for the E4OD, but it's spendy
 

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Discussion Starter · #5 ·
thanks, that's pretty much what i was lookin for. I think i'll try and gran an AOD and see what happens.

I was hoping for an E but didt expect too much. Not going to throw a computer in it. Shes pretty low cost right now. I have about $3K total in it. The truck was junk, got it for free, rebuilt the engine, had a spare C6, rebuilt T-case, front and rear ends, threw on the lift, hope to put my old cage in it and be done. Somewhere along the lines, i think it was my Kragen Re-manned distributor, i lost some performance and Im pushing about 8 MPG. That's just rediculous.

During teh build i was low on cash so opted to rebuild the 302 that was in it. I could have done my 429 but just didnt have the money at the time. Man have i regretted that ever since. lol
 

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Why don't you consider an E4OD swap, with a fuel injection swap? If you can score all the stuff from a junkyard pretty easy, it's really not too difficult of a swap, and will DEFINITELY net you the kind of mileage increase you're looking for, as well as a potential power increase.
 

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MidlifeCrisisUndrWay
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Depends on which trans you put in. :shrug The E4OD is the heaviest-duty trans you can bolt in - it'll stand up to a PSTD in a 2-ton truck. But it's also the HEAVIEST, so the OD might not do much for your mileage.

Heavy-duty is pretty much the opposite of economical, so you need to choose one.


Ah!

Just learned something new about my tranny!
 

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Ah!

Just learned something new about my tranny!
Yes and no - the trans he was talking about while an E4OD ain't quite the E4OD you got, especially if the PSTD truck is '96 and up. Nevertheless, your E4OD is at least as strong as a C6 would be if your truck had one, as the E4OD is essentially a C6 with an OD band and computer control. Just make sure you keep your trans cool, the C6 can tolerate some heat but the E4OD hates it all, especially if you've installed a higher-stall converter.
 
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