Ls head porting

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Old Sep 2, 2006 | 01:36 PM
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Default Ls head porting

Right now i havet he block in my sig, looking to build another block to run 300whp daily, and hold 400+ (dont know when that number will stop going up). My next motor will be fully built, but running on pump gas as it will still be a daily driver and will be driven almost every day of the week.

With respects to getting that kind of HP out of a non vtec im looking to get the head ported. Can anyone reccomend a place I can get a good porting done at, but not something over the top? In no way will the car be a 700whp track queen on c16. So i guess i dont really need a agressive port, just something to help the non vtec head flow a little better.
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Old Sep 2, 2006 | 02:49 PM
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Default Re: Ls head porting (swappedcx)

You have probably heard this already but a stock vtec head will outflow a ported ls head for a lot less money.You will have less rocker problems and more rpm potential with the vtec head.
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Old Sep 2, 2006 | 03:09 PM
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Default Re: Ls head porting (NJIN BUILDR)

yes i heard it time and time again, i dont want a vtec head. At this time i want to go non vtec until i learn more about the swap then i might consider lsvtec since it will be a built block

So something like a stock b16 or gsr head flows better than a ported ls head?
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Old Sep 2, 2006 | 03:19 PM
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Default Re: Ls head porting (swappedcx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swappedcx &raquo;</TD></TR><TR><TD CLASS="quote">yes i heard it time and time again, i dont want a vtec head. At this time i want to go non vtec until i learn more about the swap then i might consider lsvtec since it will be a built block

So something like a stock b16 or gsr head flows better than a ported ls head?</TD></TR></TABLE>

SEARCH..you will learn more about the swap by searching.
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Old Sep 2, 2006 | 03:22 PM
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Default Re: Ls head porting (NJIN BUILDR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR &raquo;</TD></TR><TR><TD CLASS="quote">You have probably heard this already but a stock vtec head will outflow a ported ls head for a lot less money.You will have less rocker problems and more rpm potential with the vtec head.
</TD></TR></TABLE>

if thats true ive always wondered this... can you put ls cams into a b16 head? if so then could you just put a b16 head on a ls block and not do the wiring so no "vtec" but just have a good flowing head?
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Old Sep 2, 2006 | 03:23 PM
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Default Re: Ls head porting (swappedcx)

Then I would save the money for the port work until you want more than 400 hp and go with the vtec head.I can port my own ls head and i wouldn't spend the time.There are just too many reasons that make the vtec head is better choice.
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Old Sep 2, 2006 | 03:27 PM
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Default Re: Ls head porting (Bjorn20)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bjorn20 &raquo;</TD></TR><TR><TD CLASS="quote">

if thats true ive always wondered this... can you put ls cams into a b16 head? if so then could you just put a b16 head on a ls block and not do the wiring so no "vtec" but just have a good flowing head?</TD></TR></TABLE>

You can't use ls cams in a vtec head,but a ls/vtec setup is not hard to do.It's been done a few times.
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Old Sep 2, 2006 | 04:34 PM
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Default Re: Ls head porting (NJIN BUILDR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR &raquo;</TD></TR><TR><TD CLASS="quote">You have probably heard this already but a stock vtec head will outflow a ported ls head for a lot less money.You will have less rocker problems and more rpm potential with the vtec head.</TD></TR></TABLE>



stock b16 head killing a ......LS with a race valve job
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Old Sep 2, 2006 | 05:56 PM
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Default Re: Ls head porting (MAX_CFM)

What are the ballpark figures when getting an ls head ported compared to a b16?I am just wondering what the difference would be in the two heads?
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Old Sep 2, 2006 | 06:06 PM
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Default Re: Ls head porting (siblues)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by siblues &raquo;</TD></TR><TR><TD CLASS="quote">What are the ballpark figures when getting an ls head ported compared to a b16?I am just wondering what the difference would be in the two heads?</TD></TR></TABLE>

intake valve size is the main difference. 33mm for the B16 valves. 31mm for the LS valves.

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Old Sep 2, 2006 | 06:13 PM
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Default Re: Ls head porting (non-VTEC)

Well that explains the big difference in flow but does the size of the valves affect the price of the p&p?
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Old Sep 4, 2006 | 05:10 AM
  #12  
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Default Re: Ls head porting (siblues)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by siblues &raquo;</TD></TR><TR><TD CLASS="quote">Well that explains the big difference in flow but does the size of the valves affect the price of the p&p?</TD></TR></TABLE>

it shouldn't affect the price if one head has larger valves.

also the port shape of the B16 head is larger/diffrent from the LS head which is why it flows so much better in the upper rpm/valve lift area's.

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