700R4 question?
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Burning Brakes
Joined: Dec 2002
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From: Middletown N.Y.
700R4 question?
I need opinions. I have a built 700R4 for my 89 with a 475-500hp 383 maxing out at around 6000rpm. I know my 700R4 might not live long behind this motor but it's what I have for now. I have a Art Carr 10" non-lock-up convertor and I'm thinking of going to a lock-up convertor or maybe using a TH400 like I did on another C4 project. If I use a TH400 I'd have to keep the 2.73's in the rear because I will be driving on the highway often,with the 700R4 I'd install 3.54-3.73's to give me around 120mph@6000rpm @ the traps. Anyway, does anyone out there have a 700R4 that's lived behind this kind of power and how long has it lasted? lock-up worth anything? Or should I go TH400 and not worry about a trans and worry about the D36? :confused:
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Re: 700R4 question? (JUAN J SANCHEZ)
I have a 700R4, that the builder says, should be good for 700+ HP. I am using a Vigilanti 2600 rpm stall lock-up converter in front of it. So far it has only been abused by a Crossfire. The old trans was shot, and I have more HP sitting on an engine stand. I race every week and of course it's holding up fine. They had to "de-tune" it so I could live with it until the HP transplant. *I* think this is the best way to go for a dual purpose vehicle. More stall will be needed with the new engine. Good luck, and...
RACE ON!!!
1984 Crossfire
Member NHRA
RACE ON!!!
1984 Crossfire
Member NHRA
Safety Car
Joined: Jun 2001
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From: Severna Park Md
Re: 700R4 question? (JUAN J SANCHEZ)
If you want a better O/D tranny consider the 2004r. It can be built to handle that kind of power. Its a better trans then the 700. Its lighter and robs less power and has a better grear spread. All 200's have full throttle 3rd 4th ushift and hold in 4th. The turbo buick guys have brought the 200 a long way over the years. my bros turbo T has 500+hp and the 200 hold up good. Plenty of billit internals available for it. Check out the trans talk section on the http://www.turbobuick.com. Those guys have the mose expierence with the 200.
if you want to go TH400 talk to me. I have the original one from my 73. Its ready to go as is and works great, but you would likely want to tear into it anyway.
if you want to go TH400 talk to me. I have the original one from my 73. Its ready to go as is and works great, but you would likely want to tear into it anyway.
Team Owner
Joined: Apr 1999
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 700R4 question? (Jvette73)
Your way low on power to worry about a well built 700. Mine has the 850 hp upgrades.
I bought the Art Carr 3500 stall lockup three clutch 9.5 inch with 4.11 rear gears and I can go @ 130 mph in third with 28 inch tall tires
I bought the Art Carr 3500 stall lockup three clutch 9.5 inch with 4.11 rear gears and I can go @ 130 mph in third with 28 inch tall tires
