I don't think anybody has gotten the 700 to live behind any decent power yet even tho one or two guys are running it successfully!

I would hop up a 200 before the 700 b/c it is flat, a stronger tranny.

I looked into this by contacting the Real Art Carr and he priced me a 200 that would hold like 800hp for my 496 for when I blow my Muncie.

BUT I will say, "pricey" to say the least!

pdq67

 

700r4's were used behind a LOT of both hi-po and simply large vehicles, and there were a lot of variations. A 700 for a small block work pickup is very different than one that came out of a mid 90's vette, and different yet from one that came out of a v6 caprice and different from one from a cop car. Best to find out exactly where your trans came form so you know what you are dealing with.

Fitting the governer from a vette is a standard thing to raise shift point rpm's.

In stock form 700's are stronger than 200's. Due mostly to the popularity of high HP 200 equipped buick grand nationals, the aftermarket has developed many stronger parts for the 200, and it's true a full tilt beefed 200 will be stronger than a full tilt beeed 700

 

I have a 700 R4 in my 69 Yenko Camaro Clone and love it. Tony Eben from US Transmissions in Littleton Colorado sets them up great. He makes many trannys for racers out at Bandimere speedway. He does some tricks to them that make them much more reliable. Good Luck.

 

Not to hijack this thread, but can you post a picture of your throttle linkage for me with the 700 R4 trans?

 

the 700r4 got early bullets and related failures because mechanics and (others) didn't bother to educate themselves to cable adjustments and so forth. some 700r4s were offered behind GM's struggling attempts with diesel-powered (light-duty trucks)... sadly. as stated: there were variations of 700r applications. if and when my TH400 fails, I'd lust for that .73 overdrive~gear that my '82 Corvette 700r gives .

 

Here's one trick use the later model 5 pinion planetary gears instead of the stock 4 pinion but this alone wont make it strong enough.

 

5 pinions planets aren't usually necessary. I would only go to them if I had issues with the 4 pinions that weren't lube related.
Most of the 4 pinions planets failed from a lube issue, not power.

 

Check out this site:

http://www.700r4l60e.com/

He builds his transmissions to hold a good deal of hp even behind huge cars like the impala ss.

I've used his rebuild kit on a 4L60E and it's quality stuff...

 

Dana can definitely help you out.

 

One thing I did was to use a Corvette pressure regulator spring, boost valve and servo assembly to improve shift firmness.

TTFN
Mat

 

The Corvette parts will help, especially the servo, it used in almost all the 4L60E's in truck applications now and since the late 90's.

The boost valve is a common upgrade.

Any valve body kit should include a pressure regulator spring.

 

After all this has been said, has ANYBODY got a 700 live behind an 800 hp BB??

pdq67