02-24-2010, 03:01 PM | #1 |
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700r4 or T-56
68 sw with vortec, 350 trans and I belieive 4:11's wanting to drop highway rmps down. Already have the the 700r4 trans and aftermarket crossmember to fit the truck. It has been years since I ran a 700r4, in was in a 85 surburban but did not have much luck with many trans I put in that truck. Had the truck 4 years and put in 5 trans but thought the newer ones were much bette,r but after talking with some people I am having second thoughts and now really considering scraping the 700r4 project and going to t T-56. Already have one found from a 95 LT1 Camaro with 31,000 for 1000 bucks and just looking for thoughts good or bad I guess.
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02-24-2010, 03:17 PM | #2 |
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Re: 700r4 or T-56
I really like 700R4 transmissions myself. You have to make sure it is upgraded properly though. Lots of the stock rebuilds don't live long. I use Phoenix Transmission to build mine. They aren't cheap, you're looking at a good bit of money for a rebuild, but they are warrantied for up to 550 horsepower and 3 years. I've never needed the warranty though as they have always worked right. They're the same folks that built all of Boyd Coddington's transmissions. Look for their add in most magazines.
http://www.phoenixtrans.com/html/gmtrans.html
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02-24-2010, 03:47 PM | #3 |
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Re: 700r4 or T-56
Do you like driving? Or do you just like pushing the gas pedal?
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02-24-2010, 04:06 PM | #4 |
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Re: 700r4 or T-56
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02-24-2010, 05:22 PM | #5 |
Watch out for your cornhole !
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Re: 700r4 or T-56
He is implying that having anything less than three pedals is not driving. Just blow it off.
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02-24-2010, 05:27 PM | #6 |
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Re: 700r4 or T-56
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02-24-2010, 05:28 PM | #7 |
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Re: 700r4 or T-56
what he means is.....a manual trans is good in a driver's car (those who are into sportiness and being in control of everything) and an auto is good for commuting, cruising or towing (torque multiplication).
the 700-r4 has a great overdrive ratio and is a good trans overall if in good condition and not abused or if you have it built up. the locking converter helps even more. i say run synthetic atf and an aux cooler....all autos run hot. my dad had the 700 in his 84 burb. it was an early one and had been rebuilt by 100,000 miles. we put a 406sbc in front of it and hauled our 71 holiday camper (all 6,000 pounds of it) out to yellowstone and back on a month long trip. the trans never missed a beat. its all about the few people with bad luck being the ones that start the name calling......just think of the bad rap that the quadra jet gets. if you want even better highway smoothness, some manual transmissions have an even better top ratios than the 700 and a can also have a really steep first gear which is great for towing 'cause you don't get the torque multiplication from a torque converter. i read some gear ratios charts in my new summit catalog.....heck yes!!! |
02-24-2010, 05:38 PM | #8 |
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Re: 700r4 or T-56
700r4 will be better at drag racing while t-56 will be more fun to drive IMHO
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02-24-2010, 05:45 PM | #9 |
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Re: 700r4 or T-56
I do not plan and drag racing it it just what I am replacing my 200,000 mile truck with. I could had spent the money on a new one or make a old one like a new one and I liked that plan much better, plus imho they look better too.
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02-24-2010, 06:16 PM | #10 |
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Re: 700r4 or T-56
In a daily driver situation depending on traffic an auto makes more sense. As far as fun to drive or cruise I'll take the stick any day. Its really up to your personal preference and what you are using it for.
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02-25-2010, 12:08 AM | #11 |
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Re: 700r4 or T-56
i have a t-5 borg-warner 5 speed in my daily driver and i love it. honestly the only down fall to it is traffic which is a HUGE pain in the ass but i think its worth it because i enjoy driving it so much better
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02-25-2010, 10:27 AM | #12 |
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Re: 700r4 or T-56
This t-56 was already in a 67 c-10 and the trans tunnel did not have to be modified to accomidate for the size of it which is good. I now have to decide to go with a manual or auto. I am really leaning towards the t-56 but it will cost alot more $ to complete that setup. I will most likely dump the bench seat and go to buckets and a console perhaps. One good thing is I also wanted swap out steering colums to a IDIDIT and that one is alot cheaper than one with a shifter in it.
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02-25-2010, 11:29 AM | #13 |
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Re: 700r4 or T-56
I have never felt comfortable with 700r4's from a durability outlook. I'm sure if you throw enough money at one it will last a while, but nobody I know has ever had much luck with them. Just my $.02
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02-25-2010, 11:38 AM | #14 |
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Re: 700r4 or T-56
keep in mind also that the t-56 has 2 overdrive gears. 6th is a 50% OD, so your cruising RPM at 60 would be about 1500.
Depending on the torque of your engine, this may make the truck feel real sluggish and may have to shift to 5th going up hills. In my corvette and trans ams they'd cruise at ~1400 RPMs @ 60 and it was fine, but the fuel injected engines are set up for this. When I put a 700R4 in my 72 I had 3.08 gears and it cruised at ~1600 RPMs and it felt sluggish also. I swapped to 3.73s and it was great. Just some things to keep in mind. |
02-25-2010, 11:44 AM | #15 | |
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Re: 700r4 or T-56
Quote:
as it is to low geared for it be anything else. |
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02-25-2010, 03:40 PM | #16 |
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Re: 700r4 or T-56
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02-25-2010, 03:52 PM | #17 |
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Re: 700r4 or T-56
I just changed my tranny out not even a month ago from the 3 speed to the 700 and I also have the 4:11's in the rear and I can't even tell you how pleased I am with the change! I'm not pushing a lot of power with it so i'm hoping/ expecting it to last me a long time! The 4:11's just required to much shifting!!!!
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02-25-2010, 04:40 PM | #18 | |
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Re: 700r4 or T-56
Quote:
HTH, Charlie
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02-25-2010, 04:41 PM | #19 |
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Re: 700r4 or T-56
The thing that turned me off of the t-56 is that the shifter comes back so far that you have to lose the bench seat.
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02-25-2010, 04:46 PM | #20 |
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Re: 700r4 or T-56
There is a kit that moves the shifter to the middle of the trans
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02-25-2010, 04:51 PM | #21 |
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Re: 700r4 or T-56
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02-25-2010, 05:14 PM | #22 | |
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Re: 700r4 or T-56
Quote:
above is just one that I found already not really cheap though as it is 300 bucks. |
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02-25-2010, 05:25 PM | #23 | |
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Re: 700r4 or T-56
Quote:
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02-25-2010, 06:01 PM | #24 |
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Re: 700r4 or T-56
TooTYpo many gears is better than not enough!
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02-27-2010, 11:04 PM | #25 |
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Re: 700r4 or T-56
Picked up my T-56 yesterday I am getting just a little excited about this next upgrade. I also got to play dress up today I will post a some pics soon of the progress so far. I sure like polished aluminum. I sure really was not thinking right, the guy that sold be the t-56 also had tubular controls are upper and lower right and left side with ball joints $200 a few hours later he told me if had made the over of 200 I could had the controls too but he had told me they where supposed to be taken the next day. I did not want to step on toes but later thought I should had stomp on this deal.
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