CK5
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700r4 question.
- Thread starter Big Ray
- Start date
superbuickguy
1/2 ton status
you say that like it makes it all better - wet-atf-t-shirt-contest.... shiver.
*mic drop*
*mic drop*
Lol!
That's a function of axle gearing, not particularly the transmission's fault.
Yep. I'm shooting for 35's and 4:88 gears with a 4 or 5 inch lift. That's my target set up.
I have a set of 4 inch shackle flip brackets, and plan on a set of ORD's custom springs for the front. Still stockpiling parts...I am closer than ever now....
I have a set of 4 inch shackle flip brackets, and plan on a set of ORD's custom springs for the front. Still stockpiling parts...I am closer than ever now....
superbuickguy
1/2 ton status
transmissions have gears too... it's not all leprechauns, magic and unicorns in there.
but we can put that to rest - the 700r4 has a lower first gear then the turbo 400. Also, it was an apples/apples comparison as all the test subjects had 4:10 gears and similar sized tires.
superbuickguy
1/2 ton status
I'm still not sure I made the right choice not going with an axle flip - but I do plan on using mine for heavy towing. I went all spring because I'm concerned that putting leverage, under the frame could create frame flexing... I dunno, not changing now so I guess that's a decision.
I know this, but if you're taking a stock truck and adjusting tire size, the tranny isn't going to stay happy unless the gearing is adjusted to match. If you take a well-geared TH400 rig and throw monster tires on it, it's not going to be any happier than the 700R4 that you described. If anything, it will be less happy as it has fewer gears and a lower starting ratio.
Comparing a 4.10:1/TH400 rig with a 4.10:1/700R4 rig is hardly an apples/apples comparison. You're a whole gear off, that TH400 should be at a 2.87 gear ratio, if there was such a thing, to make a true comparison (4.10 * the 0.70 O/D ratio of the 700R4).
superbuickguy
1/2 ton status
not sure I see your point.... gearing is gearing, after all, I'm pretty certain Ford didn't take into account 38.5" tires on an FJ40 when they installed the 4.56 gears in the axles at the factory - yet it works quite well in that rig. Optimal depends far more on the purchaser then anything else, the same goes with the designer who determines what ratios go where into factory set ups. From what I understand from your prior statement, axle gearing is the only factor - and that I have trouble agreeing with as there is gear reduction in the transmission and the transfer case which affects how the vehicle does what it's supposed to do. We haven't even talked about motor changes or weight reductions (or increases). Both of those things also change what a vehicle needs for optimal performance. I had a 2.73 Suburban on 31s - nearly 30 mpg but if there was an ice age, I'd fear not being able to outrun the glaciers.
I think we're on the same page, I just abbreviated too much above. The engine/wheel speed relationship is as follows:
(T-case ratio should also be on that top line.)Changing any one of these parameters without compensating via some other parameter will change the effective drive ratio. Huge tires on 2.73 gearing? Miserable. Tiny tires on 4.56 gearing? Not great at highway speed.
My original point was that gearing should be adjusted when bumping up tire size, and that the anemic transmission-killing behavior is a result of improper gearing. Not the transmission's fault.
superbuickguy
1/2 ton status
today's motors need 10 speeds to be peppy. A BBC needs two, maybe three gears - Novak did a nice job explaining why a SM465 is a better transmission in a Jeep vs. the NV4500. http://www.novak-adapt.com/knowledge/transmissions/manual/nv4500
the nutshells is you never use the 5th gear, so why have it? On top of that, gear spacing on the 4 speed is actually better then the 5 speed). I don't disagree with them - the 5th gear in my FJ40 sees occasional use at best, it was free and it was yet another of those "you're an idiot you can't make it work because we're Pirates" things I did just to laugh at them. Then again, anything they say is pretty much guaranteed to be false (if you ever wonder why they're so enamored with 118" wheelbase rigs - the answer is simple, that's the wheelbase of a short bus)
and yes, painfully slow (2.73 gearing) but with the diesel, it worked.... slowly... but it worked. Did I mention it was slow?
the nutshells is you never use the 5th gear, so why have it? On top of that, gear spacing on the 4 speed is actually better then the 5 speed). I don't disagree with them - the 5th gear in my FJ40 sees occasional use at best, it was free and it was yet another of those "you're an idiot you can't make it work because we're Pirates" things I did just to laugh at them. Then again, anything they say is pretty much guaranteed to be false (if you ever wonder why they're so enamored with 118" wheelbase rigs - the answer is simple, that's the wheelbase of a short bus)
and yes, painfully slow (2.73 gearing) but with the diesel, it worked.... slowly... but it worked. Did I mention it was slow?
Depends on your axle ratio and tire size. I constantly find myself wanting a 6th gear in my NV4500, an SM465 would not be a good fit at all.
The real answer is that my tires are too small.
O.k., finally got to messing with this thing. Changed out the t.v. cable and it made a vast improvement. It'll hold gear as long as I keep my foot in the throttle. It stayed in second to 4 grand before I got out of it. The shifts are ranging between " very firm" and downright hard. It seems to be rpm specific, guess I'll have to get use to it still.
I haven't been anywhere to see if the o.d. is working yet. I'll do that this weekend.
I haven't been anywhere to see if the o.d. is working yet. I'll do that this weekend.
It did not click once when I installed it. I could loosen it manually I suppose. Loosen is when it clicks, yes?
Loosen it up a wee bit Ray, it sounds like it is too tight
Loosened it a wee bit, working much better now. I haven't been any where to check out the overdrive yet. Keeping my fingers crossed!
You might avoid that Dexron shower after all
