LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 block questions

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Old Apr 30, 2007 | 11:34 AM
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Default LT1 block questions

I have a couple of questions. First, is the LT1 block basically just a one piece seal block? if not then what are the differences? Also I have a 4l60 in my 93 right? not a 4l60e? So I can use a converter for a 700r4?
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Old Apr 30, 2007 | 12:18 PM
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correct one piece rear main. Yes 4l60 in a 93. 700r4 is just a less facnier name for the same transmission
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Old Apr 30, 2007 | 05:39 PM
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It is basically just a SBC block, also remember the block has passages for our reverse cooling heads.
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Old Apr 30, 2007 | 10:00 PM
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do all 1 piece blocks have reverse cooling or just the lt1?
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Old Apr 30, 2007 | 10:04 PM
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The water pump outlets are a little different as is the timing cover for the water pump drive. The pump is driven off the cam gear
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Old May 1, 2007 | 12:11 AM
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Originally Posted by 383astro
do all 1 piece blocks have reverse cooling or just the lt1?

Just the LT1
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Old May 1, 2007 | 08:22 AM
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As pointed out above. The LT1's front is totally different fron a Gen I block. But there are some very slight differences in the Cranks. I have a LT1 crank and a crank from my 90 Blazer. The snouts are different. Same diameter but the LT1 is a little longer.
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