Can somebody please post up flow numbers for stock 02+ LS6 heads?
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-------241--ls6---806--862{5.3l
200 - 134 -135 - 127 - 128
300 - 185 -186 - 179 - 176
400 - 216 -220 - 212 - 204
450 - 222 -233 - 214 - 213
500 - 226 -238 - 220 - 216
550 - 228 -238 - 220 - 210
600 - 228 -236 - 221 - 210
200 - 134 -135 - 127 - 128
300 - 185 -186 - 179 - 176
400 - 216 -220 - 212 - 204
450 - 222 -233 - 214 - 213
500 - 226 -238 - 220 - 216
550 - 228 -238 - 220 - 210
600 - 228 -236 - 221 - 210
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That's right, the heads are identical to LS6 heads except for the sodium filled valves and the flow numbers would be indentical.
SANTIAGO, thanks for posting the above I did not realize stock LS6 heads in these ranges which are way less than a good ported LS6 head.
Last edited by Chicago Crew UnderBoss; 10-12-2007 at 05:11 PM.
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Stock 5.3 Heads
Chamber 61.15 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 200 cc 63 128 179 210 218 221 226
Exhaust 70 cc 54 93 121 145 163 168 174
Valve Diameter Intake 1.89"
Valve Diameter Exhaust 1.55"
Part Number 12559852
12561706
Stock 6.0 Heads
Chamber 71.0 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake ??? 66 142 196 228 236 238 240
Exhaust ??? 59 104 137 155 167 173 177
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Stock LS1 Heads
Chamber 66.67 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 200 cc 67 122 178 215 219 223 227
Exhaust 70 cc 52 97 133 156 170 176 180
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Part Number 12559853 (1997-98)
12559853 (1999-00)
12564241 (2001-03)
Stock LS6 Heads
Chamber 64.45 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 210 cc 62 126 184 224 251 256 257
Exhaust 75 cc 57 108 143 163 176 180 183
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Part Number 12564243 (2001 +Z06)
Chamber 61.15 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 200 cc 63 128 179 210 218 221 226
Exhaust 70 cc 54 93 121 145 163 168 174
Valve Diameter Intake 1.89"
Valve Diameter Exhaust 1.55"
Part Number 12559852
12561706
Stock 6.0 Heads
Chamber 71.0 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake ??? 66 142 196 228 236 238 240
Exhaust ??? 59 104 137 155 167 173 177
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Stock LS1 Heads
Chamber 66.67 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 200 cc 67 122 178 215 219 223 227
Exhaust 70 cc 52 97 133 156 170 176 180
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Part Number 12559853 (1997-98)
12559853 (1999-00)
12564241 (2001-03)
Stock LS6 Heads
Chamber 64.45 cc 0.100 0.200 0.300 0.400 0.500 0.550 0.600
Intake 210 cc 62 126 184 224 251 256 257
Exhaust 75 cc 57 108 143 163 176 180 183
Valve Diameter Intake 2.00"
Valve Diameter Exhaust 1.55"
Part Number 12564243 (2001 +Z06)