Help!!!! engine swap now needs help.
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Joined: May 2010
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Help!!!! engine swap now needs help.
Hey guys im new here. i have a 1990 F150 EFI that had a blown motor so i put a 1979 Carbureted 302 in it and re wired it to run and all and she runs like a charm but the only problem is the tranny. it works fine but i have to manually shift it from 1st to 2nd to drive or it shifts into overdrive like right away if i start in drive. i dont know much bout these trannys but i believe they run off the PCM which is no longer functioning since i have a carbureted motor with like maybe 3 wires hooked up to make her run. is there anyway to fix this and still use the original tranny? i believe it is the E4OD transmission. i was thinking about using a C4 or C6 tranny out of an older F150. will this work? will the transfer case still bolt on the C4 or C6? any help would be appreciated. i also have the OD off button on the dash but i do not think it is functioning or if it is it isnt functioning properly. thanks guys!!! hope this forum is as good as the rest of the forums i have joined.
Postmaster
Joined: May 2008
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From: La Vergne, TN
that is likely cause the E4OD tranny is a electronically controlled tranny. best bet is get a C6 thats already 4x4 and swap it all out.
or you can get a standalone tranny controller but those can be pricy and alot of wiring.
or you can get a standalone tranny controller but those can be pricy and alot of wiring.
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ya im not into any more wiring than i already got into. i was thinking the same thing. this motor will not be stock much longer and i wanna keep the 4wd so will a c6 handle it? and will it be a pretty straight forward swap? i wont be getting into clearance issues or linkage problems or driveshaft problems will i?? i would like to know all this ahead of time. i love this truck to death and wanna get her back on the road. its got a really nice wood flatbed and its prolly my favorite truck i have ever owned. gotta love the carbureteds when their running as good as mine!!!!!! haha only 75,000 miles on the motor.
Postmaster
Joined: May 2008
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From: La Vergne, TN
the driveshafts will likely have to be different lengths. i believe the C6 and E4OD are almost the same length though but im not certain. and it'll be a pretty straight forward swap to the best of my knowledge. and yeah the C6 is a strong tranny. it can handle alot of abuse and keep on going.
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well i will pull the driveshafts too when i get a tranny. i parked next to my stepdads 84 Fi50 and the wheelbase and all was the same and his has the C6 so it may have the same driveshafts also. i will talk more tomorrow. gotta crash.
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The E4OD and C6 are different enough so you will have to do driveshaft and cross member work.
IMO, for the $550 + tax etc a controller costs, you would get about half way through the C6 conversion.
Seriously, are you going to buy a $100 scrappy special C6 and not go through it before you install it?
Driveshaft work is probably $200 per shaft, + or -.
And don't forget a torque converter, shifter, cooler hookup, wiring adaptation, and probably an adaptor for the C6 to TC.
Your money....
http://www.becontrols.com/products/electronicscat.htm
IMO, for the $550 + tax etc a controller costs, you would get about half way through the C6 conversion.
Seriously, are you going to buy a $100 scrappy special C6 and not go through it before you install it?
Driveshaft work is probably $200 per shaft, + or -.
And don't forget a torque converter, shifter, cooler hookup, wiring adaptation, and probably an adaptor for the C6 to TC.
Your money....
http://www.becontrols.com/products/electronicscat.htm
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ok hey thank you for the reply. you guys are really awesome help. i didnt know how much work it would be to switch the tranny which is why i ask. i just want the cheapest way to do it but still have it very reliable and be able to handle the power which wont be super high but i definitely higher than stock with a new intake, carb, headers, dual exhaust, and maybe a cam eventually.
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Posting Guru
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not really an E4od is just a modern C6 with an overdrive and fully electrical
lighting boys are hitting 400 hp on stock E4od's
lighting boys are hitting 400 hp on stock E4od's
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
Yeah the E4OD can handle as much power but I think the C6 is a more reliable tranny overall.
Dave if you need overdrive then think about an AOD. They can be built up to handle a lot of power and give you overdrive to save gas. A C6 doesn't have overdrive.
Dave if you need overdrive then think about an AOD. They can be built up to handle a lot of power and give you overdrive to save gas. A C6 doesn't have overdrive.
Postmaster
Joined: May 2008
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From: La Vergne, TN
but if its rebuilt with a few upgrades and a good shift kit it will easily hold up to the higher output of a built engine.
and the other bonus..... the AOD isnt computer controlled either.
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a transmission at a pull-a-part here with a torque converter is $54.32 $12.42 for 30 day warranty $8.12 core charge
where in the hell are u getting $550 as a bargain
$130 for an AOD and 4R70W and rebuild kit is $260
so $400 and have one that isnt computer controlled
but if u have no know how or tools then yea a little $550 module might be ok
http://www.pullapart.com/pricing/Mai...=10&#pricelist
where in the hell are u getting $550 as a bargain
$130 for an AOD and 4R70W and rebuild kit is $260
so $400 and have one that isnt computer controlled
but if u have no know how or tools then yea a little $550 module might be ok
http://www.pullapart.com/pricing/Mai...=10&#pricelist