I'm rebuilding a 700r4 to go behind a HSR 383 that will be right at 400-415 rwhp before the 150 nitrous shot. I want this trans to hold this, not overheat, be ok in traffic etc. What's the best parts, why's, and mods to do to the trans?

 

transmissioncenter.net

 

Intresting, I want to build it and not buy it though.

 

700rs hate heat get the best cooler you can get your hands on

 

yeah, they have that option as well... scroll through the parts section, they have packages specifically for high torque applications...

 

www.pro-built.net

 

x2.

...anyone think the GM 5 pinion planets are overkill for 450rwhp?

i was about to recommend them, lol...

 

I do believe it's the torque that comes into play, not the HP... I would go with 5 pinion ...

 

Lol

 

x3 for probuilt i have the prostreet trans made to go into the 9's

 

probuilt, is this Dana's shop? I've read good things regarding Dana.. so that's an option as well...

 

Who is Dana? Never heard of them?

 

Dana is the owner of Probuilt. He posts on here. Good guy.

 

I can say this much, my 350 puts out about 425hp and I had my 700r4 done by a local shop that has built race trans's for me in the past. With a huge cooler and medium stall, it lasted one year and I think 5 trips down the strip. Hope you have better luck than I did. It set me back $3000.

 

Pro-built!

This was my first time inside a 700R4 and it's already outlasted every 'professionally built' 700R4 I've had in the past. I've made about 35 passes between 4 dragstrip visits and driven on a couple of 200+ mile trips. I stay in the boost as often as possible when driving around town. These are the three things I did to ensure as much success as possible:

1> Listened to Dana's advice & instructions regarding replacing worn parts (especially the reverse input drum)

2> Bought a good ($700 Vigilante) billet torque converter per Dana's and other well informed transmission builders' advice for my crank torque being 600+ when my plans are done, 500 now (I believe going with a cheap torque converter has a lot to do with early failures on 700's)

3> I did a 50 mile break-in where I stayed out of boost initially and gradually worked up to full boost at the end of 50 miles.

I still need to put a cooler on it before summer gets back around. Love the way it shifts. Very pleased with it especially considering it was my first build.

 

What's dana's username on here?

 

Pro Built Automatics

www.700r4l60e.com

 

Isn't that the same company?

 

I have a BowTie Over drive in my 69 Firebird. My 455 puts 358/370 at the wheels. I have been to the track and run hard on the street since 2003. It's probably got 80,000 miles on it now. It had a Great warranty and still works great. Keep it cool, (they cool a lot better with a lock up converter), keep the TV cable taught, change the fluid at least every year or so, if you decide to build, build an 87 - 91 get the super pump kit, the 5 wheel sprag, the good sungear, DO ALL THE LUBE UPDATES. Those can be found in TSB's. Lube failure is common in 700's, Use commercial grade clutches, put 9 clutches in your 3/4 pack. ANd make sure your core is as clean as you can get it! Lubguard is a decent additive, don't use anything else. It's the only one recomended by GM.
Good Luck!

 

I've tried calling and emailing and not Aswner.