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

90’s LT1 and LT4 differences

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Old Jun 8, 2018 | 04:53 PM
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Default 90’s LT1 and LT4 differences

What are the differences between a 90’s LT1 engine and a LT4 engine?
i have a 93 Lt1 Police Interceptor Camaro that’s had a little work done but not sure what was done.
I am going to rebuild the engine with some modification to boost the horsepower up a little more.
i was wondering what are differences in the engines.
I also notice when stopping quickly going down a down grade ,my oil sump seems like all the oil leaves and oil pressure drops for a couple seconds.
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Old Jun 9, 2018 | 12:26 AM
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http://www.grandsportregistry.com/lt1vslt4.htm

KW
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Old Jun 9, 2018 | 08:59 AM
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Here is a good link with comparisons. The LT4 has some definite improvements over the LT1. I have an LT1 in my 64 El Camino.
http://www.grandsportregistry.com/lt1vslt4.htm
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Old Jun 9, 2018 | 11:20 AM
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Thank you so much for responding with the answer to my question.I currently own a 93 Camaro B4C-1LE model Police Interceptor. I’m am thinking about putting a LT1 into my 81 Corvette project.
I like the LT1’s performance and reliability but I want to build it to at least 500hp plus
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Old Jun 10, 2018 | 02:08 PM
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IIRC "Police Interceptor" is a term Ford uses on their police cars. On the Camaro it was called "Special Service Package".
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Old Jun 12, 2018 | 12:35 AM
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Originally Posted by shbox
IIRC "Police Interceptor" is a term Ford uses on their police cars. On the Camaro it was called "Special Service Package".
And of course, shbox is 100% correct!

KW
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Old Jun 12, 2018 | 06:24 AM
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Originally Posted by RockyD57
I also notice when stopping quickly going down a down grade ,my oil sump seems like all the oil leaves and oil pressure drops for a couple seconds.
Assuming you have enough oil in the car, you do know you need to stop driving it immediately, right?
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