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Old 12-24-2007, 07:43 AM
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Upgrading a '84 700r4

I've been reading up on the 700 since I've never messed with one and all the sites say to use a '87 and up case. The raptor site lists most of its parts for 87 and up trannies also.

I just bought a clean 84 camaro that needs engine work so I want to rebuild and upgrade the tranny while I have it out. Any suggestions
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Old 12-25-2007, 12:52 AM
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700R4 build

Quote:
Originally Posted by 6426yy
I've been reading up on the 700 since I've never messed with one and all the sites say to use a '87 and up case. The raptor site lists most of its parts for 87 and up trannies also.

I just bought a clean 84 camaro that needs engine work so I want to rebuild and upgrade the tranny while I have it out. Any suggestions
The 87-90 700R4's are the best as most of the upgrades have already been from the factory,contact Raptor's Tech line and talk to them,the issues that caused failures in the earlier 700R4's are usually addressed when you install the shift kit.A good investment is to purchase the DVD from Raptor,even if you decide not to tackle it yourself you will know what you are talking about if you decide farm it out,that takes the"Here comes a sucker" element right out of the mix.
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Old 12-25-2007, 06:43 AM
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A shift kit does not address the hard part upgrades on an early 700 trans.

What Horse Power numbers are your plans for this trans use?

Your 1984 trans should have the 27 spline (small) input shaft. Later trans have a 30 spline shaft and thicker over all shaft diameter.

The forward sprag assembly was up graded in later units.

10 Vane pumps are more common in later units.

The low-reverse roller clutch is wider in later units.

The aluminum input drum is machined differently , easier to install a few more 3-4 frictions and steels.

Over run pressure plate is thinner with different thickness frictions and steel plates for the forward clutch pack.

A quality TransGo shift kit will address the internal pressures and the TV system for pressure rise inside the trans.

I suggest using a drive shell known as 'the beast'.. a good upgrade

I would suggest that the pump bushing is properly 'staked' into place. Also drill the drain back hole behind the seal slightly larger.



stake pump bushing:



drill drain back hole larger:




Plug the 3-4 clutch passage relief hole in the pump. GM removed this hole in later pumps:

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Old 12-26-2007, 04:36 AM
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Thanks guys I'm still unsure of exactly what I plan to do with this car.
It is very clean with only 52000 miles on it. Some kid had it and tore the top end off and doesn't know how to put it back together.

So if a throw a engine together with what I have I'd guess it'll be in the 325 horse range. I thought about gutting it and putting the 454 and power-glide that came out of my nova but I'd have to upgrade the rearend immediately.

Decisions decisions
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