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APPENDIX B –
HOLLEY JET CHART AND
JET ORIFICE AREA AND CONVERSION CHART
Main Jet Number, Drill Size, and Flow
JET NO.
4
0
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
56 — H
R
OT
OD
DRILL SIZE
.040
.041
.042
.043
.044
.045
.046
.047
.048
.049
.049
.050
.052
.052
.053
.054
.055
.056
.057
.058
.060
.060
.061
C
™
ALC
FLOW
117
122
129
135
142
149
156
163
170
178
185
194
203
212
221
230
240
251
262
273
285
298
311
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