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I need Head help!!!

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Old Feb 25, 2012 | 11:55 PM
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Default I need Head help!!!
Alright so I have an LQ4 and I was originally going to do L92s but then I wasn't sure if that was my best bet so I've been looking into 243's and the 5.3 heads. but I don't know what the best head is for my build... FYI we have a Mega Death cam and flat top pistons. PLEASE HELP!!!
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Old Feb 26, 2012 | 01:13 AM
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get the head that best match your combo.you should get the cam last,especially with a more radical build.
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Old Feb 26, 2012 | 12:17 PM
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Well we dont know what the best head is for our build thats why we came here
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Old Feb 26, 2012 | 03:47 PM
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What are you guys trying to achieve? also what are the specs on that cam?
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Old Feb 26, 2012 | 03:50 PM
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CAM SPECS: 244/242 612/610 112 lsa We are trying to acheive a badass 73 Nova with around 450-500hp
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Old Feb 26, 2012 | 04:03 PM
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L92s would be your best bet with that cam and with your hp goals
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Old Feb 26, 2012 | 07:38 PM
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Alright thanks! port and polish or would stock work just fine?
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Old Feb 26, 2012 | 08:04 PM
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The L92 heads flow like 300 cfm on the intake side but around 200 on the
exhaust side. This in unported form represents ONLY about a 66% E/I ratio.
Most cam companies in lue of this will suggest a cam with 12-16 degrees more
exhaust duration (example 232/246 @.050).
Also if your engine has flat top pistons it would be an LQ9...or are they
aftermarket pistons ????
Since you already have the cam I'd suggest either Texas Speed CNC'd 5.3
heads or a set from Advanced Inductions...with roughly eleven to one
compression and perhaps a Fast intake you should meet your power goal
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Old Feb 26, 2012 | 11:11 PM
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They are aftermarket Flat tops. And what if we did ported and polished L92s? or even milled down a bit
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Old Feb 28, 2012 | 10:59 AM
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bump.
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Old Feb 28, 2012 | 11:08 AM
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Even porting them you still need a larger split. If your dead set on that cam, forget about the square port heads.
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Old Feb 28, 2012 | 04:52 PM
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I believe you could minimize cost with mild work to the l92 heads
ive heard nothing but good from them
they build really good torque and horspower with
a carb. setup

Bang for Buck? L92 heads
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Old Feb 28, 2012 | 05:03 PM
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What he said ^.
Running L92s on my LQ9
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Old Feb 28, 2012 | 06:28 PM
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Alright thanks for the help guys
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Old Feb 28, 2012 | 09:17 PM
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Btw you can price the heads but TEXAS SPEED had the best price for l92s last time I checked. Thats who I got my heads and block from...
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Old Feb 28, 2012 | 09:50 PM
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https://ls1tech.com/forums/dynamomet...flow-235s.html
Please read post #3 by someone who knows
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Old Feb 28, 2012 | 10:41 PM
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Those look great! thanks for the suggestion pretty cheap too considering other companies pricing
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