700r4 question

[bigdog1985]

Any suggestions on a conversion to a 700r4
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[GMCJOE]

What kind of suggestions are you looking for? Where to buy, how to do it, and such?

[bigdog1985]

I have the trans just looking for how best to install it. I am assuming the drive shaft will need to be shortened and the converter lockup will need a kit. Tci kit? Etc.

Thanks

350 small block 545 heads light cam performer intake and edlebrock 1401 carb
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[GMCJOE]

A new cross member, unless you want to use you current and drill new holes in the frame. Shorten the drive shaft. If you have a lock up converter, yes you will need the lock up kit. If you have a non lockup converter, then you don't need it. You will need a kick down cable(TV cable). Need a rear tail for the transmission that runs a manual speedometer gear.

I think that is about it, but I could be missing something here. I can't recommend any certain kit for the lock up. I do know TCI provides pretty good products.

[bigdog1985]

I have a converter. How do I know if it is a lockup or not

Will the yoke fit? Can you just cut it without cutting the drive shaft?
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[bigdog1985]

Oh. I have the kick down cable and mechanical speedo output.
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[WIDESIDE72]

If you do a little searching you can find a one piece driveshaft out of a later model Swb chevy/ GMC w/ a 700r4 that will swap right on for $50-$100.

Also, be sure you have the TV cable adjusted correctly or you could ruin the trans iness than 5 miles!
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[GMCJOE]

Originally Posted by WIDESIDE72

If you do a little searching you can find a one piece driveshaft out of a later model Swb chevy/ GMC w/ a 700r4 that will swap right on for $50-$100.

Also, be sure you have the TV cable adjusted correctly or you could ruin the trans iness than 5 miles!
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I like your thinking. I, myself, had not done the research on that or thought about it. Are you talking about an 88 model on up into the 90's? I know the 4L60E is virtually the same transmission as the 700r4, so I am guessing those short bed models would work also for the donor drive shaft?

[WIDESIDE72]

Originally Posted by bigdog1985

I have a converter. How do I know if it is a lockup or not

Will the yoke fit? Can you just cut it without cutting the drive shaft?
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I believe all700r4 had lockup torque converters unlessit is an expensive aftermarket converter. No way to tell externally that I know of. It isthe electrical connector on the case.

The yoke is not the issue. The shaft is.
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[GMCJOE]

You have to have a yoke that has the same spline count as the output on your transmission. I would just take the truck and the drive shaft to a shop and have them cut it down, cause you want them to balance it else you will have a vibration. Make sure you have the bracket kit to hook up the kick down cable to your carb.

I have no clue on how to tell which torque convert you would have (lock up or non lock up).

[chevy6869]

i only had to have the drive shaft shortened. it was two piece but had them make one solid shaft and balance it. on my 700 it has a plug on the driver side for the lock up maybe check if yours has also. and not sure if i ran it right but i actually wired my own for lock up used a switched fed it 12 volt and it locks up fine when going down the highway. you just flick the switch on.

[VetteVet]

This will answer most of your questions.
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If that don't do it then here ya go.

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