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Old 02-03-2013, 04:46 PM
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200-4r questions looking to build up

ok so im looking at gettin a 85 monte carlo ss with a 7.5 rear 4.11s gears a th200r4 and a mild 355 chevy.

He told me the only thing done to the 200 was a shift kit ive read and looked and it seems the 200 wont last long behind a 355 so can you guys help me make it a decent transmission for lets say max 450hp?

im on a tight budget but i can use you guys ideas for help thanks

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Old 02-03-2013, 04:56 PM
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do you have a th200 or the 2004r
the latter can take anything that 355 can dish out..
turbo uicks run 8's with them and making more ft lb's than your 355 will

you'll need to update some hard parts.. but it'll take 800hp when built to the hill
midrange builds take 500 easy
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Old 02-03-2013, 05:07 PM
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1985 through 1988 Monte Carlo SSs got the TH-200-4R 4 speed, overdrive transmission. this is what i believe it has. i hope its not a total turd i dont own it yet but its the stock auto of what came in 85 so i assume it this
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Old 02-03-2013, 10:12 PM
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i think it the same 1 the GN's had cause it a 4speed i think the 200 just a 3
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Old 02-03-2013, 10:13 PM
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i believe it the same 1 the GN's had as it a 4 speed. the 200 i believe was only 3
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Old 02-03-2013, 10:34 PM
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type in 200 4r trans on U-tube. Lots of stuff' or here http://www.gnttype.org/techarea/tran.../200rebld.html
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Old 02-04-2013, 07:51 AM
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Had a 2004r trans in my 77 vette behind a 355 zz4 cam with vortec heads. I built the trans with some upgraded parts. It was a nice combination
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Old 02-04-2013, 02:42 PM
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If you got the 200 4r tranny, you'll love it. I Built one for my 1977 nova last year. I upgraded it by rebuildilng the front pump to 10 vane and relieving it. Hardened rings is a must. You have to put in the bigger boost valves and low gear boost valve. I upped the clutch count to 8 in the direct clutch pact, 5 in the forward clutch pack, three in the overrun cluch, and 3 in the fourth cluch. Larger red band. If you use a large boost valves, do not oversize the holes in the seperator plate. I used a larger 2nd gear band servo for more holding power. I recommend the red clutches. If you can find a second 200 4r for parts, it realy helps. I used the second one for insurance incase something was bad. I also used the second pan to have one cut short and one cut long and welded back together to make a deep pan. Then you can us the 700 r4 filter since its a bottom feeder enstead of the 200 filter that is a top feeder. If you use the 7.5 rear, you maybe pushing it to its limit of horse power and torque with a healthy 350, or more. Go for it? You betcha
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Old 02-05-2013, 09:05 AM
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what would all of the above parts run me. i wanna do it right just not get ripped off. the prices of most stuff dont seem to bad compared to what i spent on a diesel transmission to stand up to 700 pounds of torque. thats only a mild 350 horses but wow it was expensive
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Old 02-05-2013, 09:57 AM
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First of all, are you capaable of rebuildilng it your self? if so go for it. It's not easy and you still are going to have to buy the book. I'd bet that 75% of the rebuilt trannys that people do, fail. You have to have alot of patience and time. Along with that, you have to be orderly and clean about the work space. Auto trannys don't like dirty rebuilds. Do you know how to see the problems that cause failures in the rebuild? No tranny builder can tell you everthing you need to know. Every tranny wears dilfferently. I recommend you have it done by someone who knows how to rebuild a 200 4r. If not and your serious, It will cost you between 750-1000 to build for parts, dependilng on what type and seriousness of the build. Mine cost me approx $1100.00. But i knew the trick how to redo mine to save money. The second one i rebuilt cost me less, because i used the very best part from three other trannys, and new red clutch kit. I had never rebuilt a auto tranny before, but i have other knowledge in hydrolic funtions that aided me. I studied the tranny as I took it apart with the use of the book andit works fine. I have the patience of job, and that is what it will take. If you think that is the end of it, your wrong. Next is installing it right. Anyone can take it out. Do you know how to install the tq converter/ TV set up, ect. If you can get some help, go for it. If i sound negative, its because i've tried to help people and they lack insight and blame me. That is why tranny builder don't tell you much, the average guy thinks they got led astray. Know have i discourage you, if not, go for it.
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Old 02-05-2013, 03:05 PM
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I have a buddy who probably can. Lucky my dad has a explorer hat needs a tranny so I will try to learn on the junk 1
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Old 02-06-2013, 11:16 AM
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OK. Now set down for the day at the old computor and research all the 200 4r tranny cites you can. Every time you see something that you want to know or use later, copy it/in paper form. then you will have it for reference. My file must of use a rem of paper. I know everyou tells you that you have to have special tools to take them apart and put them back together. I didn't. I looked at the type of tool they used and substituted something else. If you can do that, then you must be able to think on you feet. I used a short piece of top chain link fence rail with the male end to put in the support to rock it loose and out. Worked like a charm. When rebuilding the pump, I didn't have the large clamp to hold the two halves together when you bolt it back together. I used a very long sign clamp that i got years ago, it looks like a very wide, long radiator clamp. Good luck from Atlantic Ia
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Old 02-06-2013, 11:51 AM
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buy this and read it
www.CKPerformance.com
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Old 02-06-2013, 12:34 PM
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I always wanted to print out and make a book of info for any car I might ever buy. Like how to fix them improve them and mod them and the such but I need a printer have a lot of money for the library
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Old 02-06-2013, 07:33 PM
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ok so its been rebuilt with a shift kit and a 2300 stall converter both motor and transmission have less than the break in period on them
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