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LT1 vs LT4 issues

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Old Jun 6, 2012 | 07:42 PM
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Default LT1 vs LT4 issues

I am still hunting for my C4. Recently found a 96 with the LT4, mileage in the mid 50s. Are these engines prone to any specific issues? Is there something I should be looking for specific to these LT4s. I have only looked at LT1s, so far and will be test driving this LT4 this weekend.
Thanks in advance.
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Old Jun 6, 2012 | 08:04 PM
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Not really, in fact they are a much improved LT1, best of the breed.
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Old Jun 6, 2012 | 09:06 PM
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I agree
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Old Jun 6, 2012 | 09:49 PM
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Originally Posted by 93Rubie
Not really, in fact they are a much improved LT1, best of the breed.
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Old Jun 7, 2012 | 10:57 PM
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LT1 plus factory mods = LT4; 'nuff said.
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Old Jun 7, 2012 | 11:35 PM
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Originally Posted by mtwoolford
LT1 plus factory mods = LT4; 'nuff said.
Quite a few factory mods
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Old Jun 7, 2012 | 11:40 PM
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Might be more technical info than what you are asking for but the specifications are reliable and summarized pretty well. LT4 received more durable engine components over the LT1. I had a ’93 and a ’94 LT1 prior to my ’96 LT4, never had an issue with either of the LT1 engines other than a intake manifold gasket leak that was fixed under GM warranty on the ’94. The LT1 is a great motor. My ’96 has 54,500 miles on it and it has been bullet proof; ’96s are the best assembled C4s, hand down.

http://www.grandsportregistry.com/lt1vslt4.htm

B17Crew

Last edited by B17Crew; Jun 7, 2012 at 11:55 PM.
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Old Jun 8, 2012 | 08:33 AM
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30 more ponies then the LT1 too, although some would argue (and various dyno slips over the years) would seem to indicate that you get a little more then stated values.

The only concern I would have though is that there was an early recall done on LT4, chances are it was done, but something to check into. I believe an GM dealer can tell you if the recall was done or check this link to see if the car you are looking at qualifies

http://www.hashmarks.com/techtips/rockerarmrecall.htm

Last edited by bac22; Jun 8, 2012 at 08:36 AM.
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Old Jun 9, 2012 | 02:27 PM
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if you ever rebuild no original lt4 kits availe?
I had bought a high mileage lt4 for 5K and sold it. regretted that
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