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Need help on how to tell an LT1 engine

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Old 03-26-2012, 03:55 PM
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Default Need help on how to tell an LT1 engine

I am planning on selling my 94 formula. A couple of years ago, I had to have some engine work done due to a blown head gasket that resulted in a cracked block as well, and so a new engine being placed in. Now that I am about to sell it, I'm not sure if the engine that is in the car is an LT1. I know its a 5.7. How can I tell if it is the LT1 engine? A friend suggested to look at the serial number on the block and look it up. Does anyone know if this will work, and where the serial number might be on the block?
Old 03-26-2012, 06:17 PM
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You can tell just by looking at the intake manifold. Unless it was modified to use an old style distributor or your no longer running fuel injection.
Old 03-26-2012, 11:23 PM
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You have got to be kidding right?
Old 03-27-2012, 02:04 AM
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Originally Posted by 87silverbullet
You have got to be kidding right?
Nope, nope, I dont thing he is.
Old 03-27-2012, 11:55 AM
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Unfortunately no I am not kidding. Believe me I wish I was. I'm still new to the mechanic world, so forgive me if I have offended you with my ignorant ways.
Old 03-27-2012, 02:23 PM
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Just look on the front of the engine. If there's no belt going to the water pump then yes you have an LT1.

Take it to a shop and ask them how much to change the spark plugs. If they tell you something off the wall, then yes you own an LT1.
Old 03-27-2012, 07:04 PM
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Originally Posted by 94formlt1
Unfortunately no I am not kidding. Believe me I wish I was. I'm still new to the mechanic world, so forgive me if I have offended you with my ignorant ways.
Post a picture please.
Old 03-28-2012, 05:25 PM
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Originally Posted by 93 LT1 Vette
Post a picture please.

I can get one in a couple of days.
Old 03-28-2012, 05:27 PM
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Thanks guys. My dad was the one that wasn't sure if it was a regular 5.7 or LT1. I wasn't sure there was a difference. This confirms my guess. He's selling it down in Texas while I'm up in New Jersey.
Old 03-28-2012, 10:56 PM
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LT1's have the distributor up front under the water pump.

Al 95 Z28
Old 03-30-2012, 04:13 PM
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If it looks like this, its an LT1. Eric L



http://www.google.com/imgres?imgurl=...Q9QEwAA&dur=47
Old 04-01-2012, 09:36 PM
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Yep. It looks just like that. Thanks for the help.



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