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

LT1 to LT4 conversion kit.. kinda cool

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Old 11-01-2007, 09:33 PM
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Default LT1 to LT4 conversion kit.. kinda cool

I just thought it was neat they put everything together and are offering a conversion kit again.

$2494.99 eek

http://www.jegs.com/webapp/wcs/store...78543_-1_10187

Old 11-01-2007, 09:46 PM
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Cool but... "$$ eeek $$" sounds about right.
Old 11-01-2007, 09:53 PM
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I have a feeling, all priced out separately, it'd be well under that. I'm thinking around $1K cheaper at least.
Old 11-01-2007, 09:53 PM
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How good is that kit??? What kind of numbers??
Old 11-01-2007, 09:56 PM
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Originally Posted by Hugger-96-lt1
How good is that kit??? What kind of numbers??
Buy one and we'll all know.
Old 11-01-2007, 09:57 PM
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lol i know some one has it????















Old 11-01-2007, 10:51 PM
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i'll waite a couple months, there should be acoule on ebay
Old 11-01-2007, 11:45 PM
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lol i have seen the ebay ones...they are the lt4 kit with the hotcam i believe they are around the same price though
Old 11-01-2007, 11:47 PM
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Originally Posted by Formula350
I have a feeling, all priced out separately, it'd be well under that. I'm thinking around $1K cheaper at least.

At least?? No.

LT4 Heads.... at least $1000
Intake... what are they $400?
Roller rockers... $200?
Lifters.... aint they kinda pricy anyways?
Gaskets $100
Head bolts $60
And ca.. not sure price of lt4 cam... $200??

so about 2k??

That is a rough *** guess... but not 1k cheaper... It is probably pretty close
Old 11-02-2007, 01:44 AM
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And to think you could spend less on stock ported heads/cam and gain twice the power.
Old 11-02-2007, 02:18 AM
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unported stock heads boltons and an 847/306 would get you more.
Old 11-02-2007, 03:53 AM
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Originally Posted by Dragframe
At least?? No.

LT4 Heads.... at least $1000
Intake... what are they $400?
Roller rockers... $200?
Lifters.... aint they kinda pricy anyways?
Gaskets $100
Head bolts $60
And ca.. not sure price of lt4 cam... $200??

so about 2k??

That is a rough *** guess... but not 1k cheaper... It is probably pretty close
My bad, I completely forgot about the heads!! :\
Old 11-02-2007, 08:30 AM
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Originally Posted by Hugger-96-lt1
How good is that kit??? What kind of numbers??
Under IDEAL engine only dyno conditions the LT4 HOT kit with the GM intake made 425fwhp, nobody is claiming the Edelbrock intake is anything beyond decent and sofar the results look poor for the price on it.

A good ported LT1 heads and cam package can make 400+ at the TIRES which is much more than 425 flywheel.
Old 11-02-2007, 08:49 AM
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Originally Posted by 96capricemgr
Under IDEAL engine only dyno conditions the LT4 HOT kit with the GM intake made 425fwhp, nobody is claiming the Edelbrock intake is anything beyond decent and sofar the results look poor for the price on it.

A good ported LT1 heads and cam package can make 400+ at the TIRES which is much more than 425 flywheel.
I wonder what that same cam would do with LT4 heads? Might be an interresting test?
Old 11-03-2007, 10:18 PM
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i have the kit installed with other bolt ons and it def isnt worth the money, i am not ashamed to admit it, i made a bad choice lol.
Old 11-03-2007, 11:22 PM
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i wonder if theres an LT4 cold cam kit.
Old 11-04-2007, 01:41 AM
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Default Exactly what is an LT4??

My friend claims he has a 96z with an lt4. I have heard of them buy dont really know much about what they are exactly supposed to be. What makes tham better than an lt1? Or are they any better?
Old 11-04-2007, 07:24 AM
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The heads flow a lot more than STOCK LT1 heads. 250ish vs 210ish. The hot cam used to be "hot", now it's sort of just ordinary. It's not bad mind you, it's just that there is a lot of better stuff out there. A bone-stock LT4 'Vette will dyno near the 300hp mark at the wheels, about 45-50 more than an LT1 'Vette. It's a solid package, but NOT WORTH the money you'll pay. The heads are like 1300-1400 bucks, and you NEED the LT4 intake because the ports are slightly raised. So figure 1800 at least for the heads/intake. Now go to AI or LE and see what 1800 bucks will get you, lol. Your money is better spent on the aftermarket porters.
Old 11-04-2007, 07:44 AM
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Originally Posted by joelster
The heads flow a lot more than STOCK LT1 heads. 250ish vs 210ish. The hot cam used to be "hot", now it's sort of just ordinary. It's not bad mind you, it's just that there is a lot of better stuff out there. A bone-stock LT4 'Vette will dyno near the 300hp mark at the wheels, about 45-50 more than an LT1 'Vette. It's a solid package, but NOT WORTH the money you'll pay. The heads are like 1300-1400 bucks, and you NEED the LT4 intake because the ports are slightly raised. So figure 1800 at least for the heads/intake. Now go to AI or LE and see what 1800 bucks will get you, lol. Your money is better spent on the aftermarket porters.
Most of what you wrote is good but I highlighted one piece you were wrong on.
The LT4 head ports are NOT RAISED they are taller, the floor is in the same spot, and the LT4 intake is internally the same as an LT1 intake meaning the ports are smaller than the LT4 head ports, there is just more material above the port to seal above the taller port in the head. Guys have used LT1 intakes on LT4s, the sealing margin is narrow but it has been done.
Old 11-04-2007, 08:14 AM
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Ah, thanks for the clarification!


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