TFS 220cc vs. AFR 205cc
#2
TECH Senior Member
iTrader: (8)
This is straight from TFS >>>>Airflow Chart for GenX Fast As Cast Cylinder Heads
Lift Value Intake Flow CFM Exhaust Flow CFM
0.100" 67 47
0.200" 133 104
0.300" 211 167
0.400" 261 202
0.500" 292 222
0.550" 299 229
0.600" 305 233
Tests conducted at 28" of water (pressure);
CNC profiled chambers; exhaust with 1 7⁄8" pipe.
From AFR's website
0.200 140 112
0.300 200 170
0.400 251 203
0.500 281 220
0.550 292 226
0.600 298 230
Tests conducted at 28" of water (pressure);
CNC chambers; exhaust with 1
7⁄8" pipe
Both GREAT heads and you can't go wrong with either one. I have the TFS "as cast" that Brian Tooley (TEA) worked and they break 320 250 at .600 Remember you need to buy aftermarket rockers or shim the stockers .090-.100 on the TFS heads. Shane at Thunder sells a shim kit for the stockers.....
Lift Value Intake Flow CFM Exhaust Flow CFM
0.100" 67 47
0.200" 133 104
0.300" 211 167
0.400" 261 202
0.500" 292 222
0.550" 299 229
0.600" 305 233
Tests conducted at 28" of water (pressure);
CNC profiled chambers; exhaust with 1 7⁄8" pipe.
From AFR's website
0.200 140 112
0.300 200 170
0.400 251 203
0.500 281 220
0.550 292 226
0.600 298 230
Tests conducted at 28" of water (pressure);
CNC chambers; exhaust with 1
7⁄8" pipe
Both GREAT heads and you can't go wrong with either one. I have the TFS "as cast" that Brian Tooley (TEA) worked and they break 320 250 at .600 Remember you need to buy aftermarket rockers or shim the stockers .090-.100 on the TFS heads. Shane at Thunder sells a shim kit for the stockers.....
Last edited by SOMbitch; 08-13-2010 at 03:43 PM.