C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Dec 27, 2007 | 11:08 AM
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Default th350

How many hp will a low mile well maintainded (but old)
th350 take in a comfortable manner?
how a bout a stock 200r4?


thanks
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Old Dec 27, 2007 | 05:24 PM
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From: gold coast queensland
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400 is my guess if its a stock converter.you may get lucky and have it last a while with more hp than that but its a guessing game. 200r4 i do not know.

Last edited by gingerbreadman1977; Dec 27, 2007 at 05:26 PM.
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Old Dec 27, 2007 | 05:51 PM
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Originally Posted by timgman
How many hp will a low mile well maintainded (but old)
th350 take in a comfortable manner?
how a bout a stock 200r4?


thanks
With a trans-go kit and a 2800 stall, I was running TH350/500+ HP with an old set up and never had a problem.
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Old Dec 27, 2007 | 07:23 PM
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Default I'm prob looking in the low..

I'm prob looking in the low 400 or high 300 range... so I guess I'll be ok?
anyone think this is a bad Idea?

(the 1977 turbo350 with 75 k on it...)
thanks
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Old Dec 27, 2007 | 08:35 PM
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I'm running around 400 or so at the crank through my th350 with a 3200 stall converter and 4.10's in the rear. I don't take the car out of the garage without romping on it and it has held up so far. Knock on wood.
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Old Dec 27, 2007 | 10:14 PM
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The Th350 will handle a lot of HP if built right. There is no definate answer to what you are asking though. The milage thats on yours would indicate that it is probably due for new clutches, etc anyway unless is has really been babied. If you have it rebuilt take it to someone that builds drag racing transmissions, they will make sure that you get the high quality parts you need for it to live long under high HP.: thumbs:
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Old Dec 29, 2007 | 07:08 AM
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I guess that I'll try to run the stock th350 and have a 200r4 on hand to rebuld in case of a failure.....
I don't plan on driving to crazr but the machine shop
portcitymachine.com is estimating in the 400 hp range.
I wonder if it's hold up provided I drive it fairly nice...
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Old Dec 29, 2007 | 08:17 AM
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From: CORVETTE 77 385 C.I. TEXAS
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If the TH350 in good shape, no problem w/ 400+HP NA 350. Drive hard!

It would be good to change the fluid & filter.
Trans. are rated in Torque capacity. The TH350 has a higher rating than a 2004R.
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Old Dec 29, 2007 | 11:03 AM
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That's a good thing to hear..
it does currently work perfectly with the l48....

I hope it continues to.
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