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l92 top end swap write up

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Old 02-29-2008, 12:58 PM
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Default l92 top end swap write up
WRITE UP STARTS AT POST #13

I did a seach and have tons of info on the l92 head but how much better does it flow then the stock lq4 head? Ill be doing the top end transformation in a couple weeks and just want to know how well my $1500 is being spent.
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Old 02-29-2008, 01:07 PM
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It's not just a head swap . . . it's heads intake . . .. .bla bla bla . . .
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Old 02-29-2008, 01:14 PM
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I know all that is involved in the swap, for $1500 I got tb,intake,rails,injectors, (full)heads,and gaskets. Just looking for the flow increse from lq4 to l92. I know they are better heads but how much better? As far as I have searched I have not seen this comparison made.
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Old 02-29-2008, 01:15 PM
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car craft or GM high tech did a write up about it . . . .

. . there was a guy on here that did the swap, joshluther or something
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Old 02-29-2008, 01:17 PM
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https://www.performancetrucks.net/fo...d.php?t=385838
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Old 02-29-2008, 01:33 PM
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Does anyone have the the flow chart for stock lq4 heads? Thanks for the link tootall cool vids but not what Im looking for.
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Old 02-29-2008, 04:13 PM
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Intake is around 260ish @.500for bare intake
278 @.600

and you will need a custom cam...good luck
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Old 02-29-2008, 04:20 PM
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the L92s flow much better... PM richard@wcch and ask him for more info I'm almost sure he would have what your looking for.
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Old 02-29-2008, 05:14 PM
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the heads flow much better but you need to do research on what cam to use? they are doing well with smaller duration cams.
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Old 03-01-2008, 11:34 AM
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Thanks josh, truckstop. Oynx are thoose #s for lq4 heads, on the intake side?
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