901 VS 915 TRANSMISSION, 450 HP V8 901 OR 915 Options

[MattR]

QUOTE (Aaron Cox @ Mar 1 2005, 02:23 PM)

QUOTE (skline @ Mar 1 2005, 02:42 PM) Ok, I get it now. This is a first for Aaron. Good boy!!! whatever scott! how many times have i proved you wrong in your own garage????? the gt rear swaybar? the stock rear springrate? the year fo door sill changes???? i know you remember those (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) bite me (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

*cough* exhaust gaskets *cough*

I was a witness. Aaron still owes scott 5 bucks.

[chunger]

I hear there's a custom R&P set that is geared taller $$$ , but if you've already got the Wevo going on, you're already too deep into this trans to get into a 930 reaasonably. . . if you figure in shift linkage.

I hear 1st gear is too low and 2nd gear too high in the 915 stock.

-'Chung

[sj914]

QUOTE (chunger @ Mar 1 2005, 03:19 PM)

I hear there's a custom R&P set that is geared taller $$$ -'Chung

I think those are already NLA.

[chunger]

That makes sense. . . at the time I was looking supplies were short, and the manufacturer did not plan on making another batch.

-'Chung

[TravisNeff]

whats the ballpark on the R/P? a kilobuck?

[ewdysar]

The 3.10 R&P is NLA. One sold just over a year ago for about $1500.

[nine14cats]

Check with Rod Simpson. I talked with him late last year and he had (2) sets of the 3.1:1 tall R&P left to sell. He was asking $1600 for each.

Bill P.

[airsix]

QUOTE (Travis Neff @ Mar 1 2005, 02:20 PM)

If a 915 has a vent at the top like a 901, your garage is gonna look a little sloppy flipping it over. I heard of running the tranny upside down, and one of the benefits is that most of the weight is now lower. Never did it, never saw it or whatever..

Actually, if you run the tranny upside-down the weight is moved higher - however, the output shafts are higher too, which can be a good thing on a car that has been lowered a lot. In fact, the factory ran the 915 upside down in the 935 turbo for just that reason. They also relocated the vent, used an external cooler, and added a pump for lubrication.

-Ben M.

[East coaster]

I believe flipping the R&P in a 915 does require machine work. At least I had to pay for machine work when mine was flipped. I think the case has to be clearanced. Wevo 915 = $$$$, I'm 9g's into mine with tranny/parts/labor/shipping. (IMG:http://www.914world.com/bbs2/html/emoticons/alfred.gif) Good luck!

[Sammy]

Have you dyno'd that engine? What are the torque values?
Horsepower doesn't hurt 901s, torque does.

[Brett W]

The only way to make the 901 last behind a V8 is to either not enjoy the benefits of a V8 or put the 901 on a shelf and cover it in plastic. Then it would last indefinitely.

For the price of a custom 915 or 930 go ahead and setp up to the Mendolla transaxle. They are stong enough for 500+ and they are in my opinion a better value. For the same money, as a rebuilt 915, you can get the right gears, mid-engine setup, etc.

Now if you want some real power maybe and X-trac will be in your future. Should be good for 800+ but that whole straight cut gears will really cut into the radio on a long trip.

[Sammy]

I have to strongly disagree.

i rebuilt a 901 and bolted it up to a V8, never had a bit of problems and i drove it hard.
Finishing 7th out of 60 cars (with 10 instructors) kind of hard. I drove it hard and raced it hard, but always respected the machine.
If you abuse a transmission it will fail, even with a 1.7.
i could break a 915 or a 930 transmission if I really tried.

if you exceed the torque capabilities, a 901 will fail also, but I believe most 901 failures are not due to excessive torque, but abuse. It happens but not that often.

Scott Mann had a 901 behind his V8 (with a claimed 565 hp? (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) ) and it last for many years and he pushed the limit constantly.

[Andyrew]

Brett, Elaborate on the mendolla trani...

[Rider914]

QUOTE (RUDEPEST @ Mar 1 2005, 01:36 PM)

thanks for the replies. I have already fliped the ring and pinion. All you do is flip it over with no machining needed. I haven't used the tranny to know what is wrong or not, but I want to be able to use first gear. The 901 tranny's first gear is like a granny low and I'm not into rock crawling my 914. A friend is a fan of the 901 and dislikes the 915 so he is trying to make me run the 901, but it just can't hold the HP. Keith

Do Not Use 1st Gear!!

This is what splits your 914/901. . . I have many years on mine, only 400hp

[Gary]

QUOTE (Andyrew @ Mar 1 2005, 06:34 PM)

Brett, Elaborate on the mendolla trani...

I'm not Brett but,

Mendeola Transmissions

[airsix]

QUOTE (Sammy @ Mar 1 2005, 06:27 PM)

I have to strongly disagree. i rebuilt a 901 and bolted it up to a V8, never had a bit of problems and i drove it hard.

Sammy, this is meant as no disrespect - I hold you in high regard w/ full Guru status. (Seriously) Ok, then... You have to take into consideration how much you drove the car like that. You drove it for less than a year didn't you? It held up to what you demanded of it, but for how many miles? 1,000? 3,000? Would it hold up to that kind of driving for another 40,000? Probably not IMHO.

-Ben M.

[jd74914]

But, say a 901 lasts for 10,000 miles; then you blow it. You jus go out and get a new one, after all, they are really cheap and plentiful. How many 901's would you need to go through to equal the cost of a wevo 915?

[Andyrew]

Whats the cost of a wevo 915? 5k?? More??

901 trani's can be had for 100 to 500, or more.

Ebay at 250 all the time. Rebuilt at 400 on ebay.

sooo... 10-15 trani's at minimum??

Wana know in all honestly what I would do if I had a 915 trani? I would start modifying my engine, and then one day put on a turbo and make 600rwhp...

then bam, no more 915...

I think of the 901's as limiters (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif)

[jd74914]

You've got a valid point. (IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif)

I think in terms of a really CSOB, who likes playing with chevys too. We need a C6 auto or Turbo 350 for midengines. Something really strong and REALLY cheap (atleast they are around here) (IMG:http://www.914world.com/bbs2/html/emoticons/aktion035.gif)

[Andyrew]

Yup. Really need a trani like that.. But unfortunately, for that to happen we would need to have 2 million 914 v8 owners, and v8 conversions to be around for 20 years strong...

For now, I guess we can go with 915's as strong cheap(relatively) trani's..


I plan on buying one in about 3 months or so.. Depending on how well the 901 trani holds up at the wcc (I'll be bringin spare trani's, cv's, trailing arms, bearings, calipers, linkage, wheels, cables, plumbing, ext.. lol)

Andrew