Diesel FJ40, 1974FJ

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GLTHFJ60 said:
Its official!!

When are you starting the teardown?
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well, johnny........you tell me! haha
it will be a few weeks before i can get back to the shop to start but i imagine i could have the parts you need pretty quickly...
 
1974FJ said:
well, johnny........you tell me! haha
it will be a few weeks before i can get back to the shop to start but i imagine i could have the parts you need pretty quickly...
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Ill get your parts prepped and ready so that I can send them down with you to your shop next tike you go.
 
do you reckon i can fit a 4l80e/dana300 between the frame rails and still fit a front and rear driveshaft!?
ive gotten alot of negative feedback on the 700r4 with the 4bt. thats the best option i can come up with. Has anyone done it with a fj40?
 
I can get some measurements of the 4bt and 4L80 together if you want.

You know the story, if you'll be on the highway much you'll want OD with a diesel.
 
boots4 said:
I can get some measurements of the 4bt and 4L80 together if you want.

You know the story, if you'll be on the highway much you'll want OD with a diesel.
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yeah,
What i would want to know is the total distance between the engine mounting surface to the transfercase mounting surface on the 4l80e. Also, whats the width of the bottom oil pan on the 4l80e, and how that relates to the distance between the frame rails in that location.
 
I was just talking to Jason earlier today and he says he met a guy that had a LS1 with a 4L80e in a short bed FJ45. I don't know how long the driveshaft was, but I know that the stock wheelbase of a short bed FJ45 is 10" longer than a FJ40.

How far back did you move your rear axle?
 
gothodgie said:
i would think u could make it work... Chicago on here has a 4l60e(IIRC) with 203/split case in his 40...

:cheers:
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I forgot about that 203 he had in there. That's an added 7.5" that Martin won't have to deal with because he's going straight to the D300 from the transmission.

:hhmm:

A couple of good reference posts for Chicago's 4l60e / 203 / split case install. I don't think that a 4l80e, or a TH400 for that matter, will be as long as this combo.

https://forum.ih8mud.com/showpost.php?p=5194640&postcount=551

https://forum.ih8mud.com/showpost.php?p=5256545&postcount=650

https://forum.ih8mud.com/showpost.php?p=5265041&postcount=660
 
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I read that thread on the 4BT site discouring the 700R4. I was one day away from ordering one from "bowtie" and went back to rethinking what auto to put behind my 4BT. I looked at the 4l80e last spring but if I remeber right its 4 inches longer 100+lbs heavier and woulr require floor sheet metal work.
I have been thinking about an A440F but they appear to have the lenght issue as well plus rebuilds are expensive and follr sheet metal has to be modified
No body seems to comment on this: a 700R4 assembled in a "K" housing with heavy duty parts and diesel govenner ( yes 700R4 has some diesl parts available) and a low stall converter should have no issue if the engine and trans mounts are not to sloppy.. The key here is built for a diesel,
I just wonder about the failures referanced, were they street transmission stuck behing the 4bt? Nobody gives the failure mode just that it broke.. I would like to hear from an owner of a trans that broke behind a diesel

I have delayed starting my mod until december while I sort this out
Pete
 
BigWalker said:
I read that thread on the 4BT site discouring the 700R4. I was one day away from ordering one from "bowtie" and went back to rethinking what auto to put behind my 4BT. I looked at the 4l80e last spring but if I remeber right its 4 inches longer 100+lbs heavier and woulr require floor sheet metal work.
I have been thinking about an A440F but they appear to have the lenght issue as well plus rebuilds are expensive and follr sheet metal has to be modified
No body seems to comment on this: a 700R4 assembled in a "K" housing with heavy duty parts and diesel govenner ( yes 700R4 has some diesl parts available) and a low stall converter should have no issue if the engine and trans mounts are not to sloppy.. The key here is built for a diesel,
I just wonder about the failures referanced, were they street transmission stuck behing the 4bt? Nobody gives the failure mode just that it broke.. I would like to hear from an owner of a trans that broke behind a diesel

I have delayed starting my mod until december while I sort this out
Pete
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thats what i was thinking too. It seems the main issue with the 700r4 is the case strength and getting a proper torque converter and modulator. it also seems the pump on the 700r4 isnt setup for the low rpm diesels, however it seems all these could be taken care of as you are saying...
ive got a 700r4 if you need one. It only has 8,000 miles on rebuild and 800 rpm stall torque converter.
IMG_0226.webp
 
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maybe i should back up...
i pulled my motor and transmission out for a automatic setup. I sold my nv4500/clutch setup to a fellow cruiser head who put it behind a 4bt in his fj62.

SO...i had to rip every out of the engine bay, feels like im starting over...
IMG_0151.webp
 
1974FJ said:
maybe i should back up...
i pulled my motor and transmission out for a automatic setup. I sold my nv4500/clutch setup to a fellow cruiser head who put it behind a 4bt in his fj62.

SO...i had to rip every out of the engine bay, feels like im starting over...
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Whoa, moonshine (was) a FJ60:D

Looks nice bro, I need to buy those parts for my truck.
 
1974FJ said:
thats what i was thinking too. It seems the main issue with the 700r4 is the case strength and getting a proper torque converter and modulator. it also seems the pump on the 700r4 isnt setup for the low rpm diesels, however it seems all these could be taken care of as you are saying...
ive got a 700r4 if you need one. It only has 8,000 miles on rebuild and 800 rpm stall torque converter.
Click to expand...

I had Bowtie transmission build one for the BT, they seemed to know what was needed. Will see come march..it is long. I need to move the the mid crossmember ugh...not sure I would go the 700 route again

Build thread to start soon
 
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