ZF-5 Behind a 400 M block swap - in an Early Bronco

[Kinder]

Still not sure the throw out bearing isn't riding a little on the diaphragm. I gonna have to take a look here next week.

Brian and I were able to do what should be the last install of his ZF last night, his throw out was also contacting the diaphragm. I was concerned so after I left he did some online research and it looks like it won't be a huge problem, and he's hoping that once the system is bled it may pull it back a bit. I don't have a peek hole on my setup so now I'm wondering if mine is making contact as well. If my setup didn't weigh a half ton I'd pull it and put some marking compound on it to check.

BTW- Woohoo! Congrats!

[Jesus_man]

I found that in order to bleed mine completely, I had to use a pry-bar thru the inspection window and manually operate the fork. before you tear it down try that!

[landshark]

I bled it outside the truck as mine is external. I bet it will be fine. So far the clutch feels great but will have Kirk drive it to have a feel.

[landshark]

I drove it! 75 mph is about 2500 RPM.. so far so good will post up some pictures and video tomorrow as its supposed to be really nice out and build my tunnel covers.

[Colorado75bronc]

Awesome! Congrats!


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[Justin]

Sweet! That had to feel good. I can't remember, what gears are you running?

[Kinder]

Congrats!

[Rox Crusher]

Congrats Landshark !

[landshark]

4.56 gests

[Gunnibronco]

I drove it! 75 mph is about 2500 RPM.. so far so good will post up some pictures and video tomorrow as its supposed to be really nice out and build my tunnel covers.

Wow you must have been screaming at 75 with the NP435.

You could probably drop to a lot lower rpms on the highway and still be good with that big old 400.

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[landshark]

I drove it! 75 mph is about 2500 RPM.. so far so good will post up some pictures and video tomorrow as its supposed to be really nice out and build my tunnel covers.

Wow you must have been screaming at 75 with the NP435.

You could probably drop to a lot lower rpms on the highway and still be good with that big old 400.

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With the NP435 68mph was about 3100 RPM or so if I remember correctly. So far the 400 hasn't had any problems staying in 5th chugging along but haven't really tested it too much, hopefully will get some time this week.

And I have 4.56 gears or supposedly do...

It will take a little time to get used to not trying to search and strong arm the gear changes :)

[Justin]

You have me thinking about whether a mild EFI 351w with 4.56 and 37s could turn that .76 final drive....

[Gunnibronco]

You have me thinking about whether a mild EFI 351w with 4.56 and 37s could turn that .76 final drive....

It seems so. When I asked several said they are running 35's w/4.10s with a 351.

I thought sub 2000 rpm wouldn't work, but I think the 351 has a lot more low end grunt and does ok.

[landshark]

True 37 " tires with od I would go with 4.88. But that's what worked for me in my big bronco

I think 4.56 with od and 37's you would be ok

[Justin]

I'm not sure it would work all that well with the current 302, at least on anything resembling a hill. Either way, a new trans is a long way down the list of plans.

[Jesus_man]

You have me thinking about whether a mild EFI 351w with 4.56 and 37s could turn that .76 final drive....

I think you'd be fine. 35's with 4.10 up I-70 wasn't easy and I know I had to get into 4th a couple times, but if I could keep the engine at peak torque, it seemed to pull the hills quite well.

Not sure if I want to spend the money to re-gear current axles when I go to 37's or look for something more beefy. Maybe that "Jana 54" that's been gaining popularity!

Chris - are you cheeks sore from smiling so much??