Random Questions
Laughing Gas
Joined: Nov 2013
Posts: 1,207
Likes: 60
From: S.E. Louisiana;so far USA
So I'm about to that spot where I'm going to take the rear out to be rebuild
its a
Dana 60 full floater, 3.73
I have 31 inch tires on the rear
was wondering when I'm having it rebuilt would it behoove me any to have it stepped up to a larger pinion and/or ring gear
questions
how would that affect my mpg
how would that affect my towing ability on hills
how would that affect my top end
I don't plan on going any faster that 65-70 in the beast with or without a load
and I don't plan on towing anything heavier than 5000 lbs.
its a
Dana 60 full floater, 3.73
I have 31 inch tires on the rear
was wondering when I'm having it rebuilt would it behoove me any to have it stepped up to a larger pinion and/or ring gear
questions
how would that affect my mpg
how would that affect my towing ability on hills
how would that affect my top end
I don't plan on going any faster that 65-70 in the beast with or without a load
and I don't plan on towing anything heavier than 5000 lbs.
higher MPG
lowered towing ability on hills
higher top end speeds
decreased engine wear
Numerically higher ratios generally mean the opposite.
The 390 is a stout engine when all is right with it.
My F-250 with the Dana 60 (or perhaps 61) has a 460 and a C6. The ratio is 3.07. The original owner bought it to pull a camper trailer around N. CA. (I don't know what its weight was.) He seemed satisfied with the results. So far, I haven't pulled any large loads with it. It does well with lighter trailers. I like its highway performance, but continue to try to improve its MPG, which is low to mid teens.
Life generally is a compromise of some sort. Such it is when choosing a single axle ratio to use.
You will have to decide where you are with it currently, and what, if anything, you would like to change.
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
Clamping force is clamping force, no matter what part of the rotor it's applied to.
On a big heavy leaf spring equipped rear end, I don't think it matters much for braking performance. It would be more for accessory or shock mount clearance, or perhaps protection for the caliper itself.
Those are other criteria for mounting location that could be used.
Paul
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
And you don't do and/or with gears. It's both or none. They are matched sets.
Paul
Fleet Mechanic
Joined: Aug 2004
Posts: 1,311
Likes: 31
From: Nevada
Measure
Do yourself a huge favor and pull the dimensions on that pan and make sure your fitment is going to work, although I dont think your going to have a problem, im not familiar with the 4x2 undercarriage, but that pan is DEEP .. I have all kinds of room right there so you should also... but one never knows...
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Tuned
Joined: Mar 2017
Posts: 308
Likes: 1
From: Lithia springs ga
Well first and foremost I want to say thanks to everybody for some great info
Ozzy H thanks a bunch for that break down on how gear ratios work I now have a little better understanding of it all
One ton Basecamp thanks for the caliper info when I said larger I meant like going from 3.73 up to 4.10 thanks for the other info I didn't know these things were match sets this is all a severe learning curve for me
While I've been working on cars since I was a young kid I've never really given a crap about specs or numbers or any of the other stuff if it's broken I normally take it apart put it back together and it works the numbers and the specs and all that other stuff I never really gave a crap about until now
And Jake when I get home I plan on measuring the pan and put them up on here comparing them to the measurements on the milodon website cuz that's a good idea
Ozzy H thanks a bunch for that break down on how gear ratios work I now have a little better understanding of it all
One ton Basecamp thanks for the caliper info when I said larger I meant like going from 3.73 up to 4.10 thanks for the other info I didn't know these things were match sets this is all a severe learning curve for me
While I've been working on cars since I was a young kid I've never really given a crap about specs or numbers or any of the other stuff if it's broken I normally take it apart put it back together and it works the numbers and the specs and all that other stuff I never really gave a crap about until now
And Jake when I get home I plan on measuring the pan and put them up on here comparing them to the measurements on the milodon website cuz that's a good idea
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
I know how that works too Airborne. I know what I know from fiddling with stuff. Not too much on books (except science fiction!) but can now read a wiring diagram well enough to be dangerous.
The rest I just picked up as I go. And I've been going a long time now and used to have a pretty good memory. So some of the good stuff is still in there bouncing around.
Good luck.
Oh, and I'll add that there are often no hard and fast facts about gear ratio and fuel economy. Not in the real world anyway.
Generally they consider the taller/higher gear ratios as better for economy, but that's only if the rest of the vehicle/engine combination can handle it. Sometimes you can actually gain mileage with a lower/deeper ratio (higher numbers = "lower ratio" and lower numbers = "higher ratio") putting the engine into it's sweet spot.
A lot of that has to do with tire size, vehicle weight and very much about the aerodynamics.
But those are subjects for another time...
Paul
The rest I just picked up as I go. And I've been going a long time now and used to have a pretty good memory. So some of the good stuff is still in there bouncing around.
Good luck.
Oh, and I'll add that there are often no hard and fast facts about gear ratio and fuel economy. Not in the real world anyway.
Generally they consider the taller/higher gear ratios as better for economy, but that's only if the rest of the vehicle/engine combination can handle it. Sometimes you can actually gain mileage with a lower/deeper ratio (higher numbers = "lower ratio" and lower numbers = "higher ratio") putting the engine into it's sweet spot.
A lot of that has to do with tire size, vehicle weight and very much about the aerodynamics.
But those are subjects for another time...
Paul
Thread Starter
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Tuned
Joined: Mar 2017
Posts: 308
Likes: 1
From: Lithia springs ga
Oil pan
Well Jake you were right it was a good thing that I double check the measurements on my oil pan
Luckily milodon makes a 7 quart oil pan for our trucks that still fit in the stock area part number is 31130
Luckily milodon makes a 7 quart oil pan for our trucks that still fit in the stock area part number is 31130
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Tuned
Joined: Mar 2017
Posts: 308
Likes: 1
From: Lithia springs ga
Lincoln Mark VIII Wiring
Ok so here's another conundrum.
I got a Mark 8 fan
motor # - F3LH-8K621-AA -made in Canada (coincidently matches my truck lol)
fan # - F3LE-8146-AC - is the big 18 inch
ok I have looked at a lot of the threads to make heads or tails of my fan
but alas I cant figure out if my fan is a 1-speed or 2-speed
I have bench tested it but it didn't seem to have any difference in speed between the 2 wires
The motor has a white plug on it but no access panel behind the plug on the back of the motor
The wiring harness length that came with it (junkyard find) has Blue, Black, Black colors
But as it stand if I cant figure if its 1 or 2 speed when I go to install it, I'm just going to wire it 1 speed style because from everything I've read on here no one (or so few and far between I haven't read it) has had to use the high side of the fan most just roll with the low or never get it hot enough to use the high side.
Opinions/ideas/thoughts???......
I got a Mark 8 fan
motor # - F3LH-8K621-AA -made in Canada (coincidently matches my truck lol)
fan # - F3LE-8146-AC - is the big 18 inch
ok I have looked at a lot of the threads to make heads or tails of my fan
but alas I cant figure out if my fan is a 1-speed or 2-speed
I have bench tested it but it didn't seem to have any difference in speed between the 2 wires
The motor has a white plug on it but no access panel behind the plug on the back of the motor
The wiring harness length that came with it (junkyard find) has Blue, Black, Black colors
But as it stand if I cant figure if its 1 or 2 speed when I go to install it, I'm just going to wire it 1 speed style because from everything I've read on here no one (or so few and far between I haven't read it) has had to use the high side of the fan most just roll with the low or never get it hot enough to use the high side.
Opinions/ideas/thoughts???......
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
Here's another question someone just gave me some random valve covers through research found out there for a Chevy small block 360 any idea if they'll fit on my Ford FE 360 I'm leaning towards the no but I'd like a good idea from you guys and no I haven't had the time to mock them up to the heads yet
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Tuned
Joined: Mar 2017
Posts: 308
Likes: 1
From: Lithia springs ga
ya did... that I got 3 different diagrams
with 3 different answers on weather my style is a 1 or 2 speed hence the post
(O and Props to HIO silver's tech compilation) very good info for all truck builds
with 3 different answers on weather my style is a 1 or 2 speed hence the post
(O and Props to HIO silver's tech compilation) very good info for all truck builds
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
Don't be offended if the old guys might expect you to engage your thinker before running to the key board. Some of the best lessons we learned were from old grumpy guys who didn't take time to be touchy feely.
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Tuned
Joined: Mar 2017
Posts: 308
Likes: 1
From: Lithia springs ga
Sorry didn't read what you quotes 
dude reread my post from 4:07 pm today. that's the question of the day
you didn't rear the time stamp on the question its from 07/26/2017
and that question was posted at my work to save me the trouble of taking them home to test.
I'm not offended bud. But ya caught me with one foot off the merry go round in the middle of a question I thought was dead lol.
dude reread my post from 4:07 pm today. that's the question of the day
you didn't rear the time stamp on the question its from 07/26/2017
and that question was posted at my work to save me the trouble of taking them home to test.
I'm not offended bud. But ya caught me with one foot off the merry go round in the middle of a question I thought was dead lol.
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