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flow numbers for ported 98 heads

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Old 02-28-2006, 11:13 AM
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Default flow numbers for ported 98 heads

max flow for the intake is 293 and the exhaust is 202.......what does that mean exactely? How does this translate into HP and Torque??
Old 02-28-2006, 11:19 AM
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That doesn't mean much, but if those measurements are at .600, your exhaust flow is poor
Old 02-28-2006, 11:44 AM
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I am going with a Voodoo cam 222/226 .568 with 113 separation
Old 02-28-2006, 01:59 PM
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Default Flow #'s

Stock LS1 Heads - as published

.100 .200 .300 .400 .500 .550 .600
Intake 67 122 178 215 219 223 227
Exhaust 52 97 133 156 170 176 180

Ported LS1 Heads w/ 2.02's & 1.57's - as tested by AFR

.100 .200 .300 .400 .500 .550 .600
Intake -- 132 195 240 283 296 227
Exhaust -- 120 171 200 217 -- 224

Stock LS6 Heads - as published

.100 .200 .300 .400 .500 .550 .600
Intake 62 126 184 224 251 256 257
Exhaust 57 108 143 163 176 180 183




Your #s are quite an improvement over stock... if your #'s are at .600, then the exhaust is somewhat on the low side, but still improved. And as you can see, you are out-flowing stock LS6 heads, with which alot of people are making big power. With that cam selection, you will still see significant increases in perfomance.

Last edited by KRK; 02-28-2006 at 02:09 PM.
Old 02-28-2006, 02:13 PM
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Those ported heads sure do drop off at .600 lift




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