Lentech Trans?

[Turbo Ernie]

Is anyone running a lentech converter and or internals? They seem to put out on heck of a product, I would just like some real wrold feed back if possible. Thanks all in advance, Ernie.

[SergntMac]

Is anyone running a lentech converter and or internals? They seem to put out on heck of a product, I would just like some real wrold feed back if possible. Thanks all in advance, Ernie.
You may be the first to mention Lentech here. What's up your sleeve now?

[metroplex]

Their AODs are known to be bulletproof (ask any of the Mustang owners at Corral or Modular Depot).

[Turbo Ernie]

You may be the first to mention Lentech here. What's up your sleeve now? They are well known for being indistructable in some very high hp cars using are trans and the AOD. They even offer a trans break for our trans, I don't think it is a good idea but it is still an option. Keep in mind that price is not for the faint of heart. Coverter, valve body, mid shaft, and a upgraded 3-4 drum is about $2000.00 to my door. Now you need it put together plus you need your friction parts... They are in Canada www.lentechautomatics.com (http://www.lentechautomatics.com) .

[BillyGman]

I've heard that they make tough transmissions, but I don't really know anything about their product line. BTW, I clicked on that lihnk, and it doesn't lead anywhere. :confused:

[Zack]

I have talked with the owner of Lentech at length in the past.
In my opinion, they have a great product.
I do think, however that they beef up parts of the trans that doesnt need beefing up, thus the high cost.

[RF Overlord]

I clicked on that lihnk, and it doesn't lead anywhere. :confused:Try it now, Billy...

[Todd]

I can only confirm what has already been said.

I was going to use a lentech on my turbo Mustang. It would have been able to handle all the power I could throw at it with some mods by Lentech. They are quality products no doubt. But they are pricey.

Ernie,
You should check out PA (performance automatics). They offer lifetime guaranteed trans at least for the C4 that a lot of racers I know use/have used. I havent looked to see if they have anything for our cars. But I have a connection for their products. I will try to check. Call me....

[BillyGman]

Try it now, Billy...it's good now. Thanks.;)

...and now I have a question for anyone who can answer it....

I noticed that they also list "4R100" transmissions too. Aren't they the ones that come in the Ford Lightning trucks? if so, then what modifications would we have to do (if any) to get one of those transmissions in our Marauders? And would there be a benefit for us supercharged marauder owners to run those transmissions instead (the 4R100's I mean)??? Won't they takemore torque than our transmissions will? BTW, when I first heard the mention of this name (Lentech") I was thinking of "Lenco" transmissions. they're the ones I've heard about before.

[Todd]

it's good now. Thanks.;)

...and now I have a question for anyone who can answer it....

I noticed that they also list "4R100" transmissions too. Aren't they the ones that come in the Ford Lightning trucks? if so, then what modifications would we have to do (if any) to get one of those transmissions in our Marauders? And would there be a benefit for us supercharged marauder owners to run those transmissions instead (the 4R100's I mean)??? Won't they takemore torque than our transmissions will? BTW, when I first heard the mention of this name (Lentech") I was thinking of "Lenco" transmissions. they're the ones I've heard about before.

The 100 is much longer. Anything can be done. But I doubt this would be easy.



I alkso have a question..... I read a post on here that 03's have the 4R70W and the 04's have a 4R75W. What is a 4R75W...????

Just a slightly upgraded 70 or what...???

[BillyGman]

The 100 is much longer. Anything can be done. But I doubt this would be easy.



I alkso have a question..... I read a post on here that 03's have the 4R70W and the 04's have a 4R75W. What is a 4R75W...????

Just a slightly upgraded 70 or what...???I can help you with your question. Atleast somewhat anyway.....the 4R75W is the same basic design. I won't claim to be any expert, but from everything I've heard and read about it, the only difference is a minor one concerning some bushing in the tailshaft, or input shaft, or a spirol-LOK ring of some sorts. I'm sure that someone else here can be more specific about that, but the main point is, they're the same transmissions with a very minor difference. They're completely interchangeable.

As for the 4R100, since it's longer, then that might eliminate the challenge of finding a driveshaft that doesn't exhibit noticeable vibrations like the Marauder driveshaft does with taller gears. Because you would have to go with a shorter driveshaft if you chose the 4R100 transmision. That would be better since it would be less prone to becoming "Loopy" during high rotational speeds.

[QWK SVT]

I can help you with your question. Atleast somewhat anyway.....the 4R75W is the same basic design. I won't claim to be any expert, but from everything I've heard and read about it, the only difference is a minor one concerning some bushing in the tailshaft, or input shaft, or a spirol-LOK ring of some sorts. I'm sure that someone else here can be more specific about that, but the main point is, they're the same transmissions with a very minor difference. They're completely interchangeable.

As for the 4R100, since it's longer, then that might eliminate the challenge of finding a driveshaft that doesn't exhibit noticeable vibrations like the Marauder driveshaft does with taller gears. Because you would have to go with a shorter driveshaft if you chose the 4R100 transmision. That would be better since it would be less prone to becoming "Loopy" during high rotational speeds.
Other than a little extra strength, I really see no benefit... The gear ratios are the exact same, and the weight is dramatically increased - the 4R100 is up around 300lbs :eek: I have a feeling that it may not fit the tuneel, given a different housing...

If you want really out of the box, why not look at a (gasp) chev transmission - the 700r4. They've been around, and can be built to handle obscene power levels. With that REALLY low 1st gear, it should help motivate a Marauder nicely...

[BillyGman]

I have a feeling that it may not fit the tuneel, given a different housing...Yeah, that's what Logan told ne too. I wrote a PM to him about this same question since he used to own a Ford Lightning also.

If you want really out of the box, why not look at a (gasp) chev transmission - the 700r4. They've been around, and can be built to handle obscene power levels. With that REALLY low 1st gear, it should help motivate a Marauder nicely... Did you say "Chevy"??? That's a sacralige(sp?) to some people!!!! But I honestly don't have any problems with my transmission so far (29K on the clock). I'm just speculating.

[Lidio]

There’s a lot of trans builders out there that have managed to snow people into thinking that they need to buy extensive hard parts to make an AOD-E or a 4R70W live behind big power. Not trying to point any fingers here, only educate or help out a little.

I have an AOD-E in an ’88 LX Mustang with a 392inch stoked 351W and 18psi of Vortech T-trim. It puts down 650 to the rear wheels. My 04 Mach-1 put down just under 600-RWHP and its 4R70W+ or 4R75W, which ever it is I’m not sure cause its an 04…. Either way neither of those two transmissions in both of my cars and countless others we’ve done have absolutely no hard-core replacement hard parts in them, only a good beefing with clutches and of course firmed up shifts. Except my Mach-1, its trans has never been out…. Only dropped the pan to do a 1-2 accumulator mod to make it shift much harder into 2nd at WOT, that’s it, no other mods at all.

The key thing to making an AOD-E or 4R70W (as I’ve said before) live behind some pretty serious HP is once you get it to shift firm enough for the given power, simply avoid going into and out of OD under heavy load, especially down shifts from 4th back to 3rd and from 4th back to 2nd at WOT or heavy load. This is really only a problem when greater then 100hp has been added usually. The WOT down shifts from 4th directly back to 2nd with a little flare is what really kills these transmissions. Although the newer Fords including our MM’s, we can program them to grab 3rd for a brief second before it goes right to 2nd if your going slow enough to down shift from 4th right into 2nd. This is very helpful, but when making enough power they still flare from 4th to 3rd causing some damage as well if you simply don’t watch for this when you’ve got some pretty big power in front of the trans.

As I’ve always said before, these transmissions are very tough to begin with when used as a 3-speed when really abusing them.
One thing I’ve learned in the last year with MM’s especially the ‘04s is that the factory tuners are using minimum amounts of pressure’s in the trans so that they get better mileage and less drag on the trans pump and internals. I’ve found that this will allow some of them (when moded) with enough low end grunt that the trans will actually shutter or slip while accelerating. This can all be corrected with a proper computer tune as long as the trans is not already hurt or wore out.


Thanks

[BillyGman]

Thanks for your insight Lidio.

[QWK SVT]

Did you say "Chevy"??? That's a sacralige(sp?) to some people!!!! But I honestly don't have any problems with my transmission so far (29K on the clock). I'm just speculating. True, but sacrilegious, or not, it gives you the best of both worlds. That deep first gives you 4.10-like get up from a dig, but the mileage of 3.55's on the highway.

Take a quick look at this, with the gear ratios, and effective gear:

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4R70W

</TD><TD class=xl33 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: #ece9d8; WIDTH: 38pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: black" width=50 x:num>
3.55

</TD><TD class=xl34 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: #ece9d8; WIDTH: 48pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: black" width=64 x:num>
4.10

</TD><TD class=xl39 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext; WIDTH: 48pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: black" width=64>
700r4

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3.55

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4.10

</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl30 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: black" height=17>
1st

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2.71

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9.6205

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11.111

</TD><TD class=xl42 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; WIDTH: 48pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=64 x:num>
3.06

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10.863

</TD><TD class=xl44 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="12.545999999999999" x:fmla="=E2*$G$1">
12.546

</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl30 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: black" height=17>
2nd

</TD><TD class=xl35 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num>
1.53

</TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="5.4314999999999998" x:fmla="=B3*C1">
5.4315

</TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="6.2729999999999997" x:fmla="=B3*$D$1">
6.273

</TD><TD class=xl37 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 48pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=64 x:num>
1.63

</TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="5.7864999999999993" x:fmla="=E3*F1">
5.7865

</TD><TD class=xl25 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="6.6829999999999989" x:fmla="=E3*$G$1">
6.683

</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl30 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: black" height=17>
3rd

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1.00

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4.55

</TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num x:fmla="=B4*$D$1">
4.1

</TD><TD class=xl37 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 48pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=64 x:num>
1.00

</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num x:fmla="=E4+F1">
4.55

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4.1

</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD class=xl31 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 13.5pt; BACKGROUND-COLOR: black" height=18>
4th

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0.70

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2.485

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2.87

</TD><TD class=xl38 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; WIDTH: 48pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent" width=64 x:num>
0.70

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2.485

</TD><TD class=xl28 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent" x:num x:fmla="=E5*$G$1">
2.87

</TD></TR></TBODY></TABLE>

BTW, 4.10's in first would be the equivalent of your 4.56's.

[BillyGman]

BTW, 4.10's in first would be the equivalent of your 4.56's.[/QUOTE]You have an excellent point as far as the gear comparisants. the GM transmission is of a wider ratio which BTW would be just fine with a supercharged Marauder engine, although it might not provide as good acceleration as the Ford transmission does for N/A marauders since our small 281 engines have a narrower powerband than the GM 5.7L engines do. Therefore, with N/A marauders, i would think there's a greater need for a narrow ratio transmission. It would keep the engine in it's narrow RPM range of power a bit better than a wide ratio transmission would. So the lower first gear might be a trade-off for the N/A Marauder engines instead of being the best of both worlds.

But ofcourse I wouldn't have to worry about that since my car is S/ced, and therefore has a wider powerband. I wonder if there would be any computer issues with running a GM transmission in a Ford vehicle. :confused:

.

[QWK SVT]

You have an excellent point as far as the gear comparisants. the GM transmission is of a wider ratio which BTW would be just fine with a supercharged Marauder engine, although it might not provide as good acceleration as the Ford transmission does for N/A marauders since our small 281 engines have a narrower powerband than the GM 5.7L engines do. Therefore, with N/A marauders, i would think there's a greater need for a narrow ratio transmission. It would keep the engine in it's narrow RPM range of power a bit better than a wide ratio transmission would. So the lower first gear might be a trade-off for the N/A Marauder engines instead of being the best of both worlds.

But ofcourse I wouldn't have to worry about that since my car is S/ced, and therefore has a wider powerband. I wonder if there would be any computer issues with running a GM transmission in a Ford vehicle. :confused:

.
700R4's are abundant, and dirt cheap. If I planned to go on wild side with the MM, it would be an option. But, unless there's a need for a built transmission, it would be a couple of thousand, vs. a couple hundred for the equivalent of 4.10 launches with 3.55 top end gearing.

It's not something I'm really planning to do, but the 700R4 transmission is not controlled by the comuputer in the GM cars... Shouldn't be any different, here. I'm sure there's probably a way for a tuner to "disable" the tranny functions in the computer.

[Lidio]

Hey guys


In my opining regardless of an engines operating range or rpm I think more gears evenly and closely spaced is where its at. This is the reason that with in the next 10 years your going to see automatics getting as big as 8 gears from what I heard. 6-speed autos are getting to be common place even now. And being an automatic fan as long as there tough pieces, I’m all over it.

A super low first gear like in some automatics as you guys have stated like the GM’s isn’t always what you want. If coupled to a “to big of a rear gear ratio” which some do in the after market, then a mild non breathing engine will quickly run out of steam, plus the rpm drop from 1st to 2nd is horrendous. This is why I was not in favor of when the 4R70W came out back in ’94, it went to a 2.84 1st gear rather then the old 2.46 1st that was basically in most Ford 3 and 4 speed auto’s for a long time right up until the ’95 Mustangs AOD-E. I’ve actually built 4R70W’s with the old 2.46 1st in favor of a non wide ratio trans for a couple of purposes.

The new 5R55S in the ’05 Mustang is a 5 speed auto with a very steep first gear now 3.22 to be exact. But 2nd is a 2.29 and 3rd is 1.54 and 4th is 1 to 1. Fifth is of course over drive and its ratio is .71. Aside from being a smaller and weaker trans then the 4R70W… It does have a great gear spread and really makes the little 4.6L 3-valve feel better then ever for an automatic car. Yes the 3-valve is a better engine then the old 2-valve and almost as good as the 4 valve, but the new 5-speed trans is very responsible for now tighten up the performance gap between the stick and the auto trans in the 05 GT’s

Gearing in my opining can and would fix a lot of today’s TQ and HP problems. I leased an ’05 F-150 this past December to use as a salt catcher and as a R&D truck to develop an SCT tune that has worked out very good. My point about the truck though is that in my opining the new 3-valve 5.4L at 300HP is actually not bad in a loaded FX-4 with super cab especially with my 93 Octane tune. But the 4R75W is what’s really holding it back now. I truly feel that with a well done 5 or 6 speed auto in this thing, it could feel totally better and have much better recovery after shifts with out ever having to squeeze more power out of the new 3-valve 5.4L. Up until now as we’ve all seen gearing with automatics has been a compromise. They’d have more gears if it wasn’t for costs and engineering. I know that the 3-valve 5.4L can and does run better with more gears because the ’05 Superduty’s come with a 5-speed auto behind the 5.4L 3-valve not a 4-speed. I’ve driving one and being heavier then the F-150, it felt as good if not better then my F-150 from 0-60.

With technology, manufacturing and resorsouse where it’s headed with more gears in modern automatics… I think they’ll have to use 0 to 60 times more often to exploit how these things can accelerate because they’ll do it better with out actually raising HP & TQ which is of course the rating that typically if not always is used to sell vehicles, especially truck in many marketing applications.

Also as a side note. With SCT I can disable all automatic features with in the stock computer of an automatic late model Ford including the MM. So a stick or non electronic auto trans could be installed and the EEC-V engine computer wouldn’t care or look for the appropriate electronics to control in the trans.
But you have to make some serious power to justify this in most modern Ford’s including the MM. As I’ve said before…. The 4R70W is very tough when racing and abusing it as long as the OD button is off.

[cyclone03]

Lidio,
I agree with you on the 5+ spd autos being the way to go.
My wife has a 5spd auto Explorer Sporttrack and that trans just seems to always be in the right gear,I'm sure the 4.10's help it out too.



Good info on removing all the trans function from the computer,now I just need a clutch pedal assy.What about the speed-o?