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AP-Engineering LS6 race head flow numbers

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Old Mar 18, 2004 | 11:40 AM
  #1  
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Default AP-Engineering LS6 race head flow numbers

Well here are some numbers for our LS6 race head. Just got off the flow bench last night with these. Here are the spec's:

LS6 castings
Manley 2.080 stainless steel intake valves
Manley 1.600 stainless steel exhaust valves
Comp Cams titanium retainers
Comp Cams 978 springs
Bronze guides
teflon seals

Intake Flow numbers
.100" / 78.8 cfm
.200" / 163.9 cfm
.300" / 221.7 cfm
.400" / 275.9 cfm
.500" / 310.7 cfm
.550" / 323.2 cfm
.600" / 332.6 cfm
.650" / 338.4 cfm
This head was flowed on a 4.125" bore w/ a radius inlet and was tested @ 28"

Exhaust flow numbers
.100" / 65.4 cfm
.200" / 114.1 cfm
.300" / 163.0 cfm
.400" / 207.7 cfm
.500" / 251.0 cfm
.550" / 263.7 cfm
.600" / 266.8 cfm
.650" / 269.6 cfm
The exhaust was flowed with a tube

If you have any questions please feel free to ask.

Thanks,
Brian
automotiveperformance.net
586-954-3181
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Old Mar 18, 2004 | 12:59 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Brian@ap-engineering)

Q: $$? :jester
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Old Mar 18, 2004 | 01:46 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Umrswimr)

Nice results! Any chance of seeing some flow numbers with a 3.90" bore?

:cheers:

Dan
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Old Mar 18, 2004 | 02:02 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Blorton)

:eek: :lurk:
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Old Mar 18, 2004 | 02:41 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Darkness)

I wouldnt recommend the 2.08 intake valve on a 3.9 bore. Too much valve shrouding. I do have the head in a 2.5 version for 1795.00


Pricing for these have not been finalized.
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Old Mar 18, 2004 | 02:44 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Brian@ap-engineering)

Any #'s for 4.030 bore ?

Thank's
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Old Mar 18, 2004 | 02:48 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Brian@ap-engineering)

I wouldnt recommend the 2.08 intake valve on a 3.9 bore. Too much valve shrouding. I do have the head in a 2.5 version for 1795.00
Thanks Brian. Can you share the flow numbers for your 2.5 LS6 heads?

Dan
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Old Mar 18, 2004 | 09:21 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Brian@ap-engineering)

What's a 2.5 version and what are it's flow #s???
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Old Mar 19, 2004 | 10:49 AM
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Default Re: AP-Engineering LS6 race head flow numbers (Bink)

Could you comment on the intake runner size or velocity #'s if you used a j-hook. What kind of bench? Any correction #'s? Thx sj
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Old Mar 19, 2004 | 02:27 PM
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Default Re: AP-Engineering LS6 race head flow numbers (Brian@ap-engineering)

I wouldnt recommend the 2.08 intake valve on a 3.9 bore. Too much valve shrouding. I do have the head in a 2.5 version for 1795.00
Thats a good price, I assume this is exchange??? :cheers:
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Old Mar 19, 2004 | 03:11 PM
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Default Re: AP-Engineering LS6 race head flow numbers (runamuk)

Sorry, i meant to say a 2.05 intake version. Keep in mind these are raw numbers and all the details including pricing , what bench and dyno number will soon be posted.
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