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Reload this Page LT1 to LT4 conversion kit?

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Old 08-23-2009, 11:07 PM   #1
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Car: 1990 Firebird Formula 350
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LT1 to LT4 conversion kit?
will the LT1 to LT4 conversion kit work on a stock 1990 L98 ?
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Old 08-24-2009, 12:23 AM   #2
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
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Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

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No. The LT1 and LT4 are reverse cooling, meaning the coolant goes to the heads first, then the block, unlike the SBC (and most everything else) block-first-then-heads. The coolant passages are different between the two types of engines.

What are you trying to accomplish?
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Old 08-24-2009, 12:39 AM   #3
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Car: 1990 Firebird Formula 350
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Re: LT1 to LT4 conversion kit?
i have a stock 1990 l98 im trying to rebuild my engine with a high performance cam, intake, heads, im tryin to gain at least 100hp&torque with out having too switch to a carb. and i dont want to have to change engines or trannys
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Old 08-24-2009, 12:39 PM   #4
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

Classifieds Rating: (4)
http://www.sdparts.com/product/SD806...keHeaders.aspx

http://www.sdparts.com/product/24502...rCamshaft.aspx

Add runners (or just get the upgraded Vortec roller heads & a Holley/Weiand Stealth Ram for Vortec), headers, 1.6:1 rockers, perhaps computer tuning.
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Old 08-24-2009, 01:31 PM   #5
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Car: 1990 Firebird Formula 350
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Re: LT1 to LT4 conversion kit?
do i need a
SB Chevy Hydraulic Roller Lifter Kit to go wit the hot cam? and what kind of headers do i need?
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Reload this Page LT1 to LT4 conversion kit?
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