Are those heads the same as J heads?
There all 'smogger' heads. What I noticed so far if that there is plenty
of meat to get rid of the pushrod pinch completely. Always thought that was a T/A only deal.
587 production heads
4" bore @ 28" stock port w/ 1.88" valve
Lift--------Intake cfm
0.150------91
0.200-----124
0.250-----157
0.300-----182
0.350-----199
0.400-----206
0.450-----212
0.500-----214
0.550-----211
0.600-----206
So right there you can get 400hp from bone stock heads
This is from Chrysler Power magazine:
2.02 intake, hog out ports (pinch removed) blended guides, bowl
Lift--------Intake cfm
0.150-----110
0.200-----149
0.250-----183
0.300-----210
0.350-----232
0.400-----250
0.450-----267
0.500-----281
0.550-----277
0.600-----270
potential 550-600hp heads
W2 stock port
.050------30
.100-----61
.200-----120
.300-----166
.400-----210
.500-----236
.600-----244
.700-----234
Stock 587 heads beat the stock W2 up to .350ish lift, after that game over.
Ported 587 heads smokes the stock W2. But it's alot of work.. that
could be applied to the W2 lol.
