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#26 |
Registered User
Join Date: Oct 2007
Location: Fort Smith,AR
Posts: 1,305
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Re: Is a 200r4 worth it?
mrein3
I plan on towing on weekends, sometimes, mostly in spring/summer, but I drive it a lot. I want good gas mileage, but I have other cars, I can drive. I have to add, if I can't find anything good for a tow rig, plus everyday driving, I'll stick with the 400t. Whats everyone opinion/best way to go, on towing? I can stay with the 400t, and not be out any money, except gas mileage, or I can go with a new OD tranny, and get better mileage, but maybe not any better when towing, and be out money for a new tranny. I'm just trying to do whats best here. What gear would be best for a load this size? I'm thinking the 4.11 is best though. |
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#27 |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Re: Is a 200r4 worth it?
I did not read the whole thread, but if nobody yet has mentioned using the th400 and a gear vendors OD this would be the way to go if you are towing.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#28 | |
Registered User
Join Date: Oct 2007
Location: Fort Smith,AR
Posts: 1,305
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Re: Is a 200r4 worth it?
Quote:
Does anyone know how much this will drop my cruising RPM's? I'm 3rpm at 60mph now. Also, where can I get this and how much am I looking at? |
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#29 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Is a 200r4 worth it?
Quote:
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#30 |
Senior Member
Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
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Re: Is a 200r4 worth it?
Here's a second vote for the GV OD....add in the TH400 and you have a bulletproof combo that will get you better mileage and longevity.
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Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. |
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#31 |
Trucks N Tranzams
Join Date: Dec 2002
Location: North Las Vegas, Nevada
Posts: 816
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Re: Is a 200r4 worth it?
If you can swing the cash, get the gear vendors. I have one in my 68' with a TH400. They are not cheap, but nearly indestructible. The 200R4 is a good trans and can be modified to tow with, but in the long run Gear Vendors is the way to go.
http://www.gearvendors.com/cg2wd3s.html
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![]() '68 Chevy LB 383 TH400/GV/373 posi '56 Chevy 4WD SWB '64 Chevy short stepside '79 Trans Am 455/TH2004R/12blt/4whldisc 95 Kia (Wifes car) 2002 S-10 extended cab pickup "God punishes small sins immediately" |
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#32 |
Trucks N Tranzams
Join Date: Dec 2002
Location: North Las Vegas, Nevada
Posts: 816
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Re: Is a 200r4 worth it?
Here is TH400 Gear Vendors on ebay.
http://cgi.ebay.com/ebaymotors/Gear-...spagenameZWDVW And something similar... http://cgi.ebay.com/ebaymotors/B-J-O...spagenameZWDVW
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![]() '68 Chevy LB 383 TH400/GV/373 posi '56 Chevy 4WD SWB '64 Chevy short stepside '79 Trans Am 455/TH2004R/12blt/4whldisc 95 Kia (Wifes car) 2002 S-10 extended cab pickup "God punishes small sins immediately" Last edited by Arad68; 07-30-2008 at 12:43 AM. |
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#33 |
Registered User
Join Date: Oct 2007
Location: Fort Smith,AR
Posts: 1,305
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Re: Is a 200r4 worth it?
I'd love to go with a GV or something, but can't dish out the cash. They are rather expensive, and I just got through building a '91 S-10, and '01 Dakota drag trucks. I will probably go with a 700r4, because they can be biult like a tank for a few hundred dollars cheaper than a GV OD unit.
I apprecaite the help |
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#34 |
Registered User
Join Date: May 2008
Location: Manor, TX
Posts: 13
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Re: Is a 200r4 worth it?
I guess this is going to have to be my first post, I've been lurking for a while and I'm in the same boat as The Big Green as far as trying to decide on an automatic OD or not. Currently I'm running a TH350...
IMHO: 1. A 700R4 can be built to tow in OD and here's a good example http://www.transmissioncenter.net/700MegaRaptor.htm It just depends on how much you want to spend/how much HP you're making. 2. The "Towing" button on the newer OD transmissions just locks the converter while in 2nd and 3rd gears, instead of just 4th, my understanding is that this is to prevent excess converter slippage/heat buildup. A 700R4 can also have this ability, depending on how you wire up the lockup circuit on the converter. Heat can also be caused while towing in OD by the 3/4 gear band slipping on the drum, for this reason most "built" trannies run an upgraded 3/4 gear servo. This servo applies more pressure to give better holding capacity and no/less slippage. 3. A TH400 with a GV OD unit will probably not give you as great of an increase in gas millage if using the same OD ratio as a 700R4, due to the fact that the torque converter will still slip, or even slip more creating more heat. Kinda the same way that the same converter will "stall" at a different speed with a higher/lower HP motor in front of it. Part of the reason for using a 700R4 to me is that it has the added feature of controlled converter lockup to avoid converter slippage. Sometimes it will give the "effect" of having another gear, cause you'll drop a few hundred RPM like when you shift... 4. If you're serious about towing and want a closer to bullet proof OD get an NV4500. Just my 2 cents and what I've learned while trying to decide on the NV4500 or a 700R4 behind a mild performance 454 for a LWB 1/2ton that I'd like to do occasional towing with... Last edited by Black_Duck; 07-30-2008 at 01:29 PM. |
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#35 | |
Senior Member
Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
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Re: Is a 200r4 worth it?
Quote:
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Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. |
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#36 | |
Registered User
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Location: Hillsboro Oregon
Posts: 6,449
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Re: Is a 200r4 worth it?
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