C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 VS. LT4 INTAKE

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Old Mar 22, 2003 | 12:18 AM
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From: JACKSON MS
Default LT1 VS. LT4 INTAKE

I just heard that the lt1 and lt4 intakes are the same. Is this true or the person that made this statement was just full of it? Hope his vette runs a 14sec. at the track . ha ha. :auto:
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Old Mar 22, 2003 | 01:28 AM
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Default Re: LT1 VS. LT4 INTAKE (ICANTDR55)

They are different. The intake ports are higher on the LT4 version. Will not work on an LT1 set of heads.
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Old Mar 22, 2003 | 05:39 AM
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Default Re: LT1 VS. LT4 INTAKE (Goody)

They are different. The intake ports are higher on the LT4 version. Will not work on an LT1 set of heads.
Yes, this is true, but are there any real differences. Things that will give you performnce gains?? Assuming you use the same heads just with different port locations is there any advantage to using the lt4 manifold besides the pretty red color???
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Old Mar 22, 2003 | 07:12 AM
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Default Re: LT1 VS. LT4 INTAKE (ICANTDR55)

The outside of the casting is bigger, but the actual cast ports are basicly LT1 ports. If you want to make some extra HP on an LT4, porting the intake manifold will help. An LT4 manifold will do nothing on LT1 heads, the LT1 head's intake runner is lower than the LT4 intake runner.

Eric
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Old Mar 23, 2003 | 03:39 AM
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From: JACKSON MS
Default Re: LT1 VS. LT4 INTAKE (ICANTDR55)

thanks for the info. guys. :auto:
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Old Mar 23, 2003 | 11:27 PM
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Default Re: LT1 VS. LT4 INTAKE (ICANTDR55)

Portmatch the heads and intake, then lop off the ear's on the very top of the Intake.(If you put the intake on before you take off the heads you will know what Im talking about.
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