Vader

What he said. The 200-4R is a pretty stout unit.

Actually, the input drum on the 4L60/700 has been upgraded. There are aftermarket units with hardened shafts/drums to withstand shifts at 400 ft/lb at 7,800 RPM. I'd be more concerned about the reaction end at that point, since even the improved sun shell spline is a weak point. And then there's the reaction drum itself.

ed o

normally when the stator support strips it doesn't damage anything else/it just needs replaced and is held in by three bolts/easy fix-and it makes no movement forwards or reverse.
I have used the solid spacers from B&M and a super servo and still found 2004r's to shift soft even with a transgo hd shift kit. I haven't tried the hp type kit from transgo and think maybe that might be the way to go on the next 2004r build I do. Anyone use one? What makes a nice shifting 2004r? my velle is approx 530 horse BTW and I wouldn't want a sloppy shift-for the 700r4 the jet servo (which is the same as a t.c.i. one) makes real nice second,third,and fourth shifts IMO.

ls six

As far as I know the Input's available are all hardened stock units and I have seen claims that they will handle upwards of 700 LB-FT but thats very dramatic for simple heat treating and the part is a couple hundred bucks.

There are also cheaper (less than $50) sleeves and custom pistons to re-enforce the point inside the drum that breaks most often.

But even at 400LB-FT My 350 TPI will beat that with fairly basic mods so I cant invest that kind of cash into a part that will proabably still fail in a trans that still has other weak points for the type of driving I intend. The 700 was not intended to be in OD at WOT and even if you bypass that safety feature it will most likely fail behind my engine.




I just recently read an article posted on a 442 forum about a members work with the 200 and he ended up removing all B&M pieces and was rewarded with a much better shifting unit with a mix of home grown solutions.

Thats nice since I can use his work as a guide when I tune mine and possibly save the cost of an entire shift kit that I would only have used some parts from any way.


EDIT: http://www.442.com/oldsfaq/oft200.htm I'll be starting with the SS trans as I said so I'll be ahead of the game in that regard. I'm not intimately familiar with the 200's valvebody so I cant say I know for sure but if the only diffefence between the standard "granny-trans" VB and the performance VB really is just the diameter of most valves then I think that re-scaling the pressures involved would have a similar effect for less than the price of a new perf type VB.

In reality though the performance units are not exactly rare. All turbo I/C cars are supposed to have them as well as the SS's and 442's. All together there should be plenty of inexpensive cores for now. If the 200 really takes off then that will change.

ed o

530 hp approx. I've done 2004r's with the b&m shift kit and they still feel sloppy. I've done the HD transgo kit with a super servo and still not to my liking. Maybe the transgo hp kit is the solution? anyone use one in the 2004r or have a combo that they like? fumbling servo's and accumulator springs all day isn't what I want to do if I do a 2004r for my car. this is why I like the 700r4-the jet servo(similar to tci's) and transgo jr shift kit makes nice shifts and keeps me from doing a 2004r IMO.
the HD transgo kit replaces all the springs in the valve body bringing it up to the g.n. specs, monte ss specs and still isn't firm enough/it also does a lot mor things but too much to mention here. just not on the 2004r wagon yet.

the_am_man

iTrader: (3)

Is it really true that I could replace my 200c with a 200-4r and I could use my stock driveshaft?

So the only thing that I would have to buy to complete the swap would be a torque arm/crossmember combo??

camlass

yep. spohn has nice kits for the 2004r. as for the shifting in a 2004r. i sold a 87 gn in04. it was stock and shifted hard in all but od. the 2004r in my z is out of a early 80s cutlass. it shifts soft unless im on it then it smacks the gears. no after market **** kits. the 2004r will take a lot in stock form but as power gos up thay need to be upgraded just like anything else. a max built 700r4 can not take what a max built 2004r will about 700hp to 1200hp now most people dont need one built to 1200 hp levels and small upgrades over stock work alday long. bob