Updated Cylinder head flow numbers spreadsheet
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6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
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From: Texas
Updated Cylinder head flow numbers spreadsheet I have updated my cylinder head flow spreadsheet with some new information. I have broken it down by LS1, LS6, 5.3, and 6.0L
If you have flow information for a set of cylinder heads that you'd like to see added, please forward it on. The more information on the heads, flowbench, etc... The better. If there are any features you'd like to see added, please chime in.
http://users3.ev1.net/~black_ops/hea...2009-09-03.htm
If you have flow information for a set of cylinder heads that you'd like to see added, please forward it on. The more information on the heads, flowbench, etc... The better. If there are any features you'd like to see added, please chime in.
http://users3.ev1.net/~black_ops/hea...2009-09-03.htm
Originally Posted by Lostpatrolman
Does anyone have a flow chart for the the ls7 heads?
http://www.gearchatter.com/viewtopic11202.php
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Suspended Sponsor
Joined: Oct 2004
Posts: 371
Likes: 0
From: Just outside of Palm Springs Ca.
Hard to tell, was that with or without the CNC work? The way he said it it looked to be without....I can't wait to get my hands on a set of these, my 6.0L's flow nearly the same at .625"!
-Bryan
-Bryan
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My run of the mill c5-r heads with a 4.155" bore and no pipe.
Intake:
.100 67
.200 150
.300 222
.400 295
.500 341
.600 368
.700 367
Exhaust:
.100 43
.200 111
.300 168
.400 207
.500 222
.600 227
.700 231
Intake:
.100 67
.200 150
.300 222
.400 295
.500 341
.600 368
.700 367
Exhaust:
.100 43
.200 111
.300 168
.400 207
.500 222
.600 227
.700 231
Originally Posted by DAPSUPRSLO
My run of the mill c5-r heads with a 4.155" bore and no pipe.
Intake:
.100 67
.200 150
.300 222
.400 295
.500 341
.600 368
.700 367
Exhaust:
.100 43
.200 111
.300 168
.400 207
.500 222
.600 227
.700 231
Intake:
.100 67
.200 150
.300 222
.400 295
.500 341
.600 368
.700 367
Exhaust:
.100 43
.200 111
.300 168
.400 207
.500 222
.600 227
.700 231
Keith
The midlift numbers are good but the .600-.700 could be better. Should work well for what I'm doing, although i don't know what kind of port size they are nor what kind of velocity they cary. Just gonna slap em on and find out though. My 434 shouldn't be as sensitive to a lazy port as a smaller motor.
Originally Posted by Race-Prep
Hard to tell, was that with or without the CNC work? The way he said it it looked to be without....I can't wait to get my hands on a set of these, my 6.0L's flow nearly the same at .625"!
-Bryan
-Bryan
It sounds like they were flowed with no final CNC work, but at least had some port work done to them to reach the projected goal.
On The Tree
Joined: Nov 2005
Posts: 184
Likes: 0
JRod, i have flow numbers from my latest work, the port is developed with manifold intact. Instead of seeking max flow with clay radius, i have increased flow with manifold to 280+cfm@.600". This latest work has proven to be superior to chasing big numbers method. If you think this is worth adding to your chart i will send it to you.
Jeff (formerly LS1derfull)
Jeff (formerly LS1derfull)
This is all I have for the GM Head Casting Info.
http://www.performancetrucks.net/for...d.php?t=434396
http://www.performancetrucks.net/for...d.php?t=434396
