How much can i mill some 823's?
#6
Custm2500's Rude Friend
iTrader: (17)
I found some stock flow Numbers for the 823 heads...
Valve Lift -----.100 --.200 --.300 --.400 --.500 --.600 --.650 --.700
Stock Intake --68.8 -134.1 -200.7 -258.4 -294.2 -315.2 -317.1 -316.1
Stock Exhaust -55.6 -116.5 -163.9 -196.1 -213.5 -222.6 -257.7 -227.6
http://www.directmotion.com/dmmotors...products_id=12
Valve Lift -----.100 --.200 --.300 --.400 --.500 --.600 --.650 --.700
Stock Intake --68.8 -134.1 -200.7 -258.4 -294.2 -315.2 -317.1 -316.1
Stock Exhaust -55.6 -116.5 -163.9 -196.1 -213.5 -222.6 -257.7 -227.6
http://www.directmotion.com/dmmotors...products_id=12
Last edited by 1FastBrick; 02-08-2009 at 08:01 PM. Reason: lst were the specs came from
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#9
Custm2500's Rude Friend
iTrader: (17)
Edit: found it on the other side by Richard @ WCCH - https://ls1tech.com/forums/generatio...-l92-info.html
2.160" intake valve
1.590" exhaust valve
Richard
Last edited by 1FastBrick; 02-08-2009 at 08:33 PM.
#10
Custm2500's Rude Friend
iTrader: (17)
Richard a WCCH has some info over on the tech side but again not valve size or CC measurements... https://ls1tech.com/forums/6756797-post1.html
Stock head with OEM valves:
Lift____.100”_.150”__.200”_.250”_.300”_.350”_.400” _.450”_.500”_.550”_.600”_.650”
Port 1_ 76.3_113.1_155.7_191.1_225.5_252.5_276.3_296.1_312 .0_322.4_311.9_310.3
I am also Not sure what size bore he tested them on either....
another Edit:
In another thread I found he tested a set of 5364 for some one on the board...
The test head has casting number 5364. Here’s the tale of the tape……..
4.030” test bore
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Int. 74.9 109.4 154.4 193.5 225.3 252.8 274.6 292.7 308.8 321.0 328.7 326.6 310.0 316.6
#1 Exh. 63.6 97.9 126.1 148.7 162.3 178.6 189.6 197.6 205.5 210.7 214.6 217.8 221.2 223.5
The intake was tested with a radius plate and the exhaust was tested with a 2 ½” stub pipe.
4.155” test bore
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Int. 73.8 108.7 153.2 192.6 225.2 253.6 277.0 296.7 313.0 326.0 335.8 326.9 327.3 317.1
#1 Exh.61.1 97.9 125.7 148.1 162.0 179.5 191.8 200.1 205.9 213.3 218.4 220.9 221.9 223.2
The intake was tested with a radius plate and the exhaust was tested with a 2 ½” stub pipe.
Exhaust port tested without pipe (4.155” bore).
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Exh.63.1 94.7 121.1 140.6 156.9 165.8 176.1 182.8 187.9 191.4 193.7 195.6 197.6 199.5
Valve dimensions:
Intake = 2.160” X 4.870” X .314”(8mm)
Exhaust = 1.590” X 4.920” X .314”(8mm)
Seat/throat diameters:
Intake = 1.870”
Exhaust = 1.355”
Volumes:
Intake runner = 260.6cc
Exhaust runner = 90.0cc
Chamber = 69.8cc
Stock head with OEM valves:
Lift____.100”_.150”__.200”_.250”_.300”_.350”_.400” _.450”_.500”_.550”_.600”_.650”
Port 1_ 76.3_113.1_155.7_191.1_225.5_252.5_276.3_296.1_312 .0_322.4_311.9_310.3
I am also Not sure what size bore he tested them on either....
another Edit:
In another thread I found he tested a set of 5364 for some one on the board...
The test head has casting number 5364. Here’s the tale of the tape……..
4.030” test bore
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Int. 74.9 109.4 154.4 193.5 225.3 252.8 274.6 292.7 308.8 321.0 328.7 326.6 310.0 316.6
#1 Exh. 63.6 97.9 126.1 148.7 162.3 178.6 189.6 197.6 205.5 210.7 214.6 217.8 221.2 223.5
The intake was tested with a radius plate and the exhaust was tested with a 2 ½” stub pipe.
4.155” test bore
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Int. 73.8 108.7 153.2 192.6 225.2 253.6 277.0 296.7 313.0 326.0 335.8 326.9 327.3 317.1
#1 Exh.61.1 97.9 125.7 148.1 162.0 179.5 191.8 200.1 205.9 213.3 218.4 220.9 221.9 223.2
The intake was tested with a radius plate and the exhaust was tested with a 2 ½” stub pipe.
Exhaust port tested without pipe (4.155” bore).
Lift ___.100 _.150_.200_.250_.300 _.350 _.400 _.450 _.500 _.550 _.600 _.650_.700_.750
#1 Exh.63.1 94.7 121.1 140.6 156.9 165.8 176.1 182.8 187.9 191.4 193.7 195.6 197.6 199.5
Valve dimensions:
Intake = 2.160” X 4.870” X .314”(8mm)
Exhaust = 1.590” X 4.920” X .314”(8mm)
Seat/throat diameters:
Intake = 1.870”
Exhaust = 1.355”
Volumes:
Intake runner = 260.6cc
Exhaust runner = 90.0cc
Chamber = 69.8cc
Last edited by 1FastBrick; 02-08-2009 at 08:14 PM. Reason: More flow info