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TechInfo
Joined: 26 Oct 2004
Posts: 2989
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 Posted: Sun Feb 20, 2005 11:07 am Post subject: LS7 Head Flow Data |
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Gearchatter is committed to providing the latest Gen III & Gen IV technical info on the web. We have the privilege of posting some of the first flow figures for the LS7 head that we are aware of. These numbers represent the last version we had the opportunity to flow before the final changes were made to the casting to accommodate the CNC machine work for production runs. Only minor tweaks were made to allow the complete port to be finished machined. We will have the runner volumes for both the intake and exhaust ports posted very soon. The flow figures were obtained using a 4.125" bore plate on a SF1020 flow bench. Very impressive!!!!!
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see5
Joined: 09 Feb 2005
Posts: 28
Location: Hobart WI USA
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| Posted: Sun Feb 20, 2005 5:22 pm Post subject: |
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That is a scoop!
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2000, 6M, AX setup for SM2, Blkwg,SW headers,224/581/113,LS2 TB, FAST 90 intake, 5.3 TEA heads Cartek clutch, Magnaflow,hardened 3.90 rear. FlashScan, PLX wb, self tune in progress.
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405HP_Z06
Joined: 25 Jan 2005
Posts: 146
Location: Arlington, Texas
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| Posted: Sun Feb 20, 2005 7:50 pm Post subject: |
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Aaron
'03 Electron Blue Corvette Z06
Dynatech SuperMAXX Headers, HP Tuners, Halltech TRAP, Borla 2-Tip Stingers...
EFI-101, EFI Advanced Graduate
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Qpred98
Joined: 27 Jan 2005
Posts: 192
Location: Tomball
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| Posted: Mon Feb 21, 2005 7:51 am Post subject: |
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Any guess on what the price tag would be on these puppies? 
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1998 Pontiac Firebird Formula
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phil'sC5vette
Joined: 26 Feb 2005
Posts: 32
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NinjaZ06
Joined: 02 Feb 2005
Posts: 103
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| Posted: Fri Mar 11, 2005 9:19 am Post subject: |
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| That flow is right up there with some of the best flowing SBC heads around.
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2000BlackHawk
Joined: 06 Jan 2005
Posts: 182
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| Posted: Fri Mar 11, 2005 1:50 pm Post subject: |
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Very nice. Just wait -- pop those off, put some new seats and larger valves in there and do a little port work and you'll have some werious airflow.
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2000 Firehawk
Did the turbo thing, did the H/C thing, now who knows.
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cyphur_traq
Joined: 01 Feb 2005
Posts: 32
Location: Grapevine, Tx
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| Posted: Mon Apr 04, 2005 8:29 pm Post subject: |
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that looks like pretty damn good flow to begin with, lol. looks like stock heads would keep me happy for a little while 
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2000 Pewter Trans Am M6
US Army, Retired - 1st Cavalry Division
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2000BlackHawk
Joined: 06 Jan 2005
Posts: 182
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| Posted: Tue Apr 05, 2005 5:43 pm Post subject: |
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Ah yes, it would be good enough for awhile, until you found out that you could get those castings flowing even more air  But those aren't bad to begin with for sure.
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2000 Firehawk
Did the turbo thing, did the H/C thing, now who knows.
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superls1
Joined: 19 Apr 2005
Posts: 15
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| Posted: Tue Apr 19, 2005 7:17 pm Post subject: |
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| Wow! How much will be usable on LS1/6 engines?
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Admin
Site Admin
Joined: 11 Dec 2003
Posts: 910
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| Posted: Tue Apr 19, 2005 7:19 pm Post subject: |
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| We are working on a nice pictoral comparison of the LS7 heads vs C5R's and ported LS6. It should help point out many of the differences.
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BigJohn
Vendor
Joined: 08 Jan 2004
Posts: 209
Location: Texas
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| Posted: Tue Apr 19, 2005 8:23 pm Post subject: |
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| 2000BlackHawk wrote: |
| Very nice. Just wait -- pop those off, put some new seats and larger valves in there and do a little port work and you'll have some werious airflow. |
How big of a valve do you want to put in there?
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Best So Far NA: 10.91 @ 129 with a 1.6x 60'.
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G-Machine
Joined: 01 Apr 2005
Posts: 26
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| Posted: Wed Apr 20, 2005 7:28 am Post subject: |
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| I think the intake is fine. The exhaust could be improved some.
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orange 6 gear
Joined: 08 Apr 2005
Posts: 54
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| Posted: Thu May 12, 2005 9:42 am Post subject: ls-7 heads work w/ gen 3 blocks??? |
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yea i'd leave the intake alone... that 2.20 valve is GINORMOUS!!! i'd probably pump the exhaust up to closer to a 1.80 but serious flow none the less.
will those heads work on sayyyyy... a 6.0 block w/ a 4 inch bore????? i know you'd need the ls-7 intake to fit. but i would like to know if they'd fit an LQ-9 block.
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i like to do things the hard way... like shifting my own gears!
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grfperformance
Joined: 27 Feb 2005
Posts: 53
Location: Colorado
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| Posted: Sun May 15, 2005 9:59 pm Post subject: |
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These valves are too large. They won't fit in the bore. You might get away with notching the block, but airflow would be sacrificed.
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2005 GTO Kooks LTs, CATs, X-pipe
359 RWHP
365 RWT
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