C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Lt4 With Automatic

Old Jul 27, 2008 | 01:09 AM
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Default Lt4 With Automatic

Why didn't the LT4 come with an auto trans. Was it to much power or to much rpm. I have a new LT4 crate engine that I want to put into
my 1992 C4 automatic. I am pretty much stuck with the auto. Am I asking for a lot of headaches.
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Old Jul 27, 2008 | 01:28 AM
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Supposedly because GM didn't want to get the Auto / LT4 combination EPA certified.

You can do the LT4 and auto combo. There was one local for a long time. The only modification I was told os was a higher stall converter.
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Old Jul 27, 2008 | 02:42 AM
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Wont hurt your auto, go for it. As said above a small converter/gears would really make it fun.
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Old Jul 27, 2008 | 03:04 AM
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Default LT 4 with auto trans

Originally Posted by Blue 92
Supposedly because GM didn't want to get the Auto / LT4 combination EPA certified.

You can do the LT4 and auto combo. There was one local for a long time. The only modification I was told os was a higher stall converter.
Thanks, have been sitting with this engine for a couple months but was reading so many negative threads I wanted all the info I could get before installing. The trans issue was only thing holding me back. Think I'll go ahead with it...Thanks
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