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Transmission change from manual to automatic

Old 06-12-2019, 07:31 PM
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Default Transmission change from manual to automatic

I have a 74 Corvette convertible. I'm putting a new motor in it and I want to change the trans to an automatic overdrive trans from a manual 4 speed. Which trans should I use? I'm not racing it, just cruising around. Do I have to change the crossmember?
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Old 06-12-2019, 07:49 PM
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The 200-4r is plug and play, the 700r4 is not. It needs a new crossmember and a shortened driveshaft and and diff, yoke.I'm dropping in the 200 in my 76

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Old 06-12-2019, 09:19 PM
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What rear end gear are you running? With a 3:50 you get the best of both worlds. Tall enough to be on the freeway, but short enough to be spirited when necessary.
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Old 06-12-2019, 09:50 PM
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call Silver Sport, SST , their kits are worth the money, and they install and work perfectly
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Old 06-13-2019, 11:36 AM
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Interesting. I've been pondering this also since my ROD 6-speed is making a rattling noise at idle in neutral. Thinking about the 200-4r since it would be minimal modification.
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Old 06-14-2019, 07:06 AM
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no matter what you put in you have to change the crossmember. you might be able to install the trans with the fixed crossmember while installing the engine, but a removable crossmember will make life way easier.
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