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

LT4 Heads

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Old 06-23-2010, 11:41 PM
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Originally Posted by SS MPSTR
It may not match perfectly, but it will work.
Yes it could work, but It will need machine work to make it match.
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Old 06-23-2010, 11:46 PM
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Originally Posted by NewOrleansLT1
Yes it could work, but I will need machine work to make it match.

What machine work?
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Old 06-23-2010, 11:55 PM
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The LT1 intake on the LT4 heads
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Old 06-24-2010, 12:08 AM
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I shouldnt need machine work since im getting intake too right?
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Old 06-24-2010, 12:20 AM
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Ya since you are getting the LT4 intake you don't need machine work.
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Old 06-24-2010, 05:40 PM
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Originally Posted by NewOrleansLT1
Stock LT1 heads= 212/215cfm. Stock LT4 heads= 230/243cfm. 10cfm= about 10hp, so the stock LT4 heads would be about a 15 hp gain with your factory cam. If you have a cam with about .500" lift or better the stock LT4 heads can be worth up to 30hp over the stock LT1 heads.
This is nothing but pure speculation, backed by no actual research. CFMs by themselves don't mean squat.
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Old 06-24-2010, 05:48 PM
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Originally Posted by CumminsPower
I had a guy selling Lt4 heads and intake for 400 so I was just wondering. I plan on getting a cam later.


i would pick them up because thats cheap and when u go to ge them ported u can port the lt4's bigger then the lt1's =]
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Old 06-24-2010, 11:16 PM
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Originally Posted by RamAir95TA
This is nothing but pure speculation, backed by no actual research. CFMs by themselves don't mean squat.
Your right. LT1 heads are better than LT4 heads. LT4 heads are garbage. I was just trying to give him a logical reason to get the LT4's. Why not?
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Old 06-24-2010, 11:31 PM
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LOL I won't even argue. There isn't a logical reason.
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Old 06-25-2010, 05:20 AM
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Exactly what machine work is needed to make LT1 intake fit LT4 heads???
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Old 06-25-2010, 08:18 PM
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Originally Posted by 96capricemgr
Exactly what machine work is needed to make LT1 intake fit LT4 heads???
Exactly what I want to know.
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