LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

My LT1 block has 4-bolt mains

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Old 05-06-2004, 02:33 PM
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My LT1 block has 4-bolt mains

Found this when we pulled the pan in the process of doing a rebuild. I was just wondering how common this is to find. I know that some cars came with the 4 bolt mains.
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Old 05-06-2004, 03:03 PM
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Believe the corvettes did.
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Old 05-06-2004, 03:05 PM
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It's probably a service block. A lot of F-Bodies got 4 bolt blocks when the engines were replaced under warranty.
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Old 05-06-2004, 07:38 PM
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Originally posted by Nestromo
It's probably a service block. A lot of F-Bodies got 4 bolt blocks when the engines were replaced under warranty.
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Old 05-06-2004, 07:45 PM
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no camaro got a 4 bold from the factory(4th gen) deffinately not the original block!, but hey, all the stronger of an engine!
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Old 05-06-2004, 08:07 PM
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Yea no 4th gen came with 4 bolt mains............that's good for you though.......who knows what you'll find when you pull the heads......could be some nice forged pistons in there
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Old 05-06-2004, 08:15 PM
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Originally posted by "White Knight"
Yea no 4th gen came with 4 bolt mains............that's good for you though.......who knows what you'll find when you pull the heads......could be some nice forged pistons in there
Correction - no LT1 F-Bodies came from the factory with 4 bolt blocks.

Let us not forget the LT4 cars.
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Old 05-06-2004, 08:57 PM
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Originally posted by "White Knight"
Yea no 4th gen came with 4 bolt mains............that's good for you though.......who knows what you'll find when you pull the heads......could be some nice forged pistons in there
Actually THIS is what the piston looked like.
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Old 05-07-2004, 09:27 AM
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actually, yes they did. some 93 and 94 received 4 bolt mains. this can be confirmed by calling tpis. www.tpis.com

sorry for replying so late, but i know that some, all be it very few, came with four bolt mains.
how am i so sure? i bought my car new, its a 94, but i bought it in november of 93, and it has 4 bolt mains, and i asked around.
not trying to start any flames or wars......
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Old 05-07-2004, 11:40 AM
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Originally posted by snyper94z28
actually, yes they did. some 93 and 94 received 4 bolt mains. this can be confirmed by calling tpis. www.tpis.com

sorry for replying so late, but i know that some, all be it very few, came with four bolt mains.
how am i so sure? i bought my car new, its a 94, but i bought it in november of 93, and it has 4 bolt mains, and i asked around.
not trying to start any flames or wars......
HA! Tahts cool. Makes me wonder about mine (not that I care enough to pull the pan). I'm gonna check and see what month it was built.
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