Re: Hemi 99 Flow numbers
[Re: moderncylinder]
#1105902
11/02/11 04:19 PM
11/02/11 04:19 PM
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Joined: May 2004
Posts: 12,478 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,478
Taxes & Virus's R-US, NY
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Quote:
580cfm was a good number awhile ago,, now its probably 600-620
2.560 was the std valve size back awhile ago aswell,, but i know things are bigger now
Wow!
One of those would look really cool in my Cuda...
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Re: Hemi 99 Flow numbers
[Re: Dragula]
#1105903
11/02/11 07:05 PM
11/02/11 07:05 PM
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Joined: Jan 2003
Posts: 19,543 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,543
Las Vegas
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Well they do not use the 99 Hemi any longer. They have a new symetrical port head these days. FWIW my 99 uses a 2.55x6.830 valve. As for flow 570-90 seems typical.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Hemi 99 Flow numbers
[Re: Al_Alguire]
#1105904
11/02/11 11:42 PM
11/02/11 11:42 PM
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Joined: Nov 2003
Posts: 1,855 NW Indiana
fbs63
top fuel
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top fuel
Joined: Nov 2003
Posts: 1,855
NW Indiana
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My heads are Nickens circa 2002-03 and go 590 @ 1.060 with a 2.540 intake. They have a D-shaped intake port.
Last edited by fbs63; 11/07/11 09:28 PM.
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Re: Hemi 99 Flow numbers
[Re: WO23Coronet]
#1105906
11/03/11 02:19 PM
11/03/11 02:19 PM
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Joined: Sep 2008
Posts: 2,840 Flint, Michigan
B1Fish540
master
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master
Joined: Sep 2008
Posts: 2,840
Flint, Michigan
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Quote:
I just read something about that over pon Allpar, but they didn't have any pictures. Does it still have the layout like the 99 HEMI or is it different? Does anyone have any pics? Per Allpar it sounds like they will be using both heads for the 2012 season.
Yes! PIX! PIX!
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Re: Hemi 99 Flow numbers
[Re: quickd100]
#1105910
11/05/11 12:14 AM
11/05/11 12:14 AM
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Joined: Jan 2003
Posts: 3,511 DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,511
DFW
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Sort of off topic, but what bolt pattern is on the back of the blocks? Is it the GM pattern or Mopar?
Floyd Lippencott IV
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Re: Hemi 99 Flow numbers
[Re: cudacustoms1]
#1105912
11/05/11 09:33 AM
11/05/11 09:33 AM
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Joined: Apr 2005
Posts: 1,107 Quebec, Canada
Diablo
super stock
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super stock
Joined: Apr 2005
Posts: 1,107
Quebec, Canada
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Quote:
How many different versions of these heads have they made and what are the differances. I had read some thing about rocker stands (1,2,or 3) bolt. Is the head bolt pattern the same? How about bore spacing? Just trying to learn more about these motors. Thanks for any info.
From what I know there were the 5.000 BS heads made and the 4.900. 5.000 for promod and the 4.900 which are still used in pro stock.
Development on the 5 inch stuff has stopped because all the promod cars are now using the 5.3 bs stuff.
As for the newest heads they have a 4 bolt hold down for the rocker system.
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Re: Hemi 99 Flow numbers
[Re: Al_Alguire]
#1105915
11/06/11 04:14 PM
11/06/11 04:14 PM
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Joined: Apr 2005
Posts: 1,107 Quebec, Canada
Diablo
super stock
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super stock
Joined: Apr 2005
Posts: 1,107
Quebec, Canada
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Quote:
If anyone wants I can take pics of my stuff.
Were we gonna get some pretty pictures?
Also did anyone know if those flow numbers were max numbers or down at .900-1.000 lift?>
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Re: Hemi 99 Flow numbers
[Re: cudacustoms1]
#1105917
11/07/11 08:32 AM
11/07/11 08:32 AM
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Joined: Jan 2003
Posts: 6,163 Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,163
Melbourne , Australia
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I think there was was 7 and 9 cam bearing options, the later having the extra cam bearing journals. Could someone verify this?
I also find it interesting that they have gone away from the mirrored port layout and to the symmetrical port. Was the mirrored layout a fad?
Last edited by LA360; 11/07/11 08:34 AM.
Alan Jones
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