hello to all.
i'm trying to Dyno-2000 my engine, but in the heads files i cant find anything related to these heads (416) nor L69 files.
does someone , please, know where to find these files or wich one of those listed are closest to 416 stock heads?
thanks to all.
Fernando.

 

You should be able to find the data here: http://www.chevyhiperformance.com/te...98/index4.html

 

Don't have flow figures on stock 416 heads but here are the flow figures for "081" casting which are for a 87+ 305 TPI.
The head ports and valve size is basicly the same.
Accurate enough for your purposes.

Flow chart for stock #14101081 305 head 87 91

Intake lift (in) Flow (cfm) Exhaust lift (in) Flow (cfm) Ratio E/I flow (%)
0.050 31 0.050 15 49
0.100 63 0.100 37 58
0.150 92 0.150 61 67
0.200 116 0.200 78 68
0.250 134 0.250 92 69
0.300 157 0.300 101 64
0.350 170 0.350 105 62
0.400 182 0.400 107 59
0.450 189 0.450 109 58
0.500 195 0.500 110 56