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

Lt4

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Old Oct 18, 2007 | 10:38 PM
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ok i bought an engine out of a 93 or 94 vette and it got here and it had the "lt4" intake "red" on it could it be an lt4 instead of and lt1????? like heads and stuff
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Old Oct 18, 2007 | 10:39 PM
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only way to truly know, get the casting numbers. many places can powdercoat.
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Old Oct 18, 2007 | 10:39 PM
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how do i get that... lol im still new
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Old Oct 18, 2007 | 10:42 PM
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casting for intake is on either the pass or driver's side by the injector bosses last time I checked. If it was out of a 93 Vette and the fuel rail crossover was in the rear then it's definately not an LT4.

Castings off heads I think are under the valve covers.
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Old Oct 20, 2007 | 09:59 AM
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I think the LT4 motors only came in the '96 model year Vettes.
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Old Oct 20, 2007 | 10:01 AM
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I think the LT4 motors only came in the '96 model year Vettes.
Yeah the 96 Gran Sport im pretty sure was the only one.
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Old Oct 20, 2007 | 10:02 AM
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GS was one, but the LT4 was also an option for the others. I've seen them before.
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Old Oct 20, 2007 | 10:24 AM
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Came on 96 GS Vettes and SLP put together some f-bodies, anyone claims otherwise they are full of crap.

Now a LOT of people MISTAKENLY think the LT4 stuff is wonderful and a lot of cars have been modified by adding those parts, but not by GM.
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Old Oct 20, 2007 | 11:34 AM
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also in 96 all the m6 vettes had Lt4s
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Old Oct 20, 2007 | 11:41 AM
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In 1996 6,959 Corvettes were built with the LT4. There were 110 Camaros and thirty Firebirds built in 1997 (including prototypes). All LT4 cars had manual transmissions.

The LT4 is a very good piece, but works better at higher RPMs (like the LS1).

Daren
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Old Oct 20, 2007 | 12:06 PM
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Originally Posted by Captainofiron
also in 96 all the m6 vettes had Lt4s
I think that you could get a 6speed in a 96 without the LT4.
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Old Oct 20, 2007 | 01:45 PM
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Originally Posted by vetman1
I think that you could get a 6speed in a 96 without the LT4.
I don't think you could.
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Old Oct 20, 2007 | 01:50 PM
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Originally Posted by mtsumedi
I don't think you could.
+1, its true all 96 vettes with M6s were lt4
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Old Oct 20, 2007 | 02:38 PM
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Originally Posted by Captainofiron
+1, its true all 96 vettes with M6s were lt4
correct
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Old Oct 20, 2007 | 02:54 PM
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Originally Posted by Captainofiron
also in 96 all the m6 vettes had Lt4s
If GIZMO said that I would believe it, so how about it GIZMO?
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Old Oct 20, 2007 | 03:00 PM
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Originally Posted by CRAZZ28
Yeah the 96 Gran Sport im pretty sure was the only one.
and collectors edition
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Old Oct 20, 2007 | 11:23 PM
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I stand corrected, I knew that all LT4 cars were M6, but did not know that all LT1 cars were A4 in 96. Goes to show that you learn something everyday.
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Old Oct 22, 2007 | 09:18 PM
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The heads will have LT4 cast on them. Look in the valve cover through the oil filler cap. The block will still be 327 but about everything else will be different. Heck, even the bottom of the pistons says LT4.


You are correct. All M6 vettes in 96 were LT4. All autos were LT1.
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Old Oct 23, 2007 | 10:26 PM
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someone must have powdercoat the intake or swaped over a lt4. check the casting number.

LT4 # 12550630 (intake)
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Old Oct 24, 2007 | 02:33 AM
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Originally Posted by LT1
check the casting number.
LT4 # 12550630 (intake)
That would be the part number, not the casting number.
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