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Old 04-23-2003, 08:38 PM
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I have a 1970 nova with a 350/th-350. Plan on building a 383 with about 450 or 500 horsepower and torque. How much power will a th-350 withstand? Should I go with a th-400 or a 700r4 or should I stay with the th-350 in my nova with the 383.

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Old 04-24-2003, 03:34 AM
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I built a Blown Big Block '57 for a customer last year and we were told that a correctly built 200r would handle it (we still used a TH400), I think the 350 should hold the power , but would suggeat one of the overdrives for a better street ride.
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Old 04-24-2003, 03:51 AM
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The Transmission shop that I use claims the 200R will stand up to about 550 HP consistently. I am using one in my street rod, this is the third season for it and it works great I am running about 330 HP. the good thing is that it is the exact same length as a 350 turbo has a better 1st gear and a .67 overdrive you can even use the same yoke and driveshaft as the 350 turbo. You will need to move you crossmember back about 2 inches.
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