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Rochester Power Valve 56-2B
Rochester Power Valve 56-2B

Rochester Power Valve 56-2B

41 Review(s)
Your Price: $14.95
Part Number: 56-2B
Availability: In Stock

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Rochester 2G, 2GC, 4G, 4GC power valve. There are three different 2G power valves, you can see them all here.
Generally doesn't work on marine applications. We had a great customer, Jack, make a video about how he modified this valve to work on his marine 2 jet. Take a look at his video below.

SPECS:
  • Gasket = ID: .350" OD: .435" THK: .031"
  • Power Valve Diameter: .305" (approx. 5/16")
  • Power Valve Overall length (minus stem): 9/16"
Watch a video about this power valve:


Watch how Jack modified this part to work in his marine application:


Replaces OE: 7001608

Be sure your power piston moves freely. If bent, or binding, clean, or replace with a new power piston assembly .
Power piston assembly
APPLICATIONS:
You must match your carburetor number to get the correct part.
MAKE
YEAR
MODEL
TYPE
BUICK
1957-58
M-50, 60, 70, 700 (EARLY 58)
4 JET
BUICK
1961-65
300 4.9l
2 JET
BUICK
1962-63
6 CYL
2 JET
BUICK
1962-63
V8
2 JET
BUICK
1966-67
225 3.7L
2 JET
BUICK
1966-69
300" 4.9L, 340" 5.6L, 350" 5.7L (Inc Repl Carbs)
2 JET
CADILLAC
1958-60
CENTER OF 3
2 JET
CADILLAC
1959-60
390 FRONT & REAR TRI POWER
2 JET
CHECKER
1963
226
2 JET
CHECKER
1964
283”
2 JET
CHECKER
1965
327 W/VAC GOV
2 JET
CHECKER
1967-68
283, 327
2 JET
CHEVROLET
1955-61
(INCL CENTER OF 3 CARBS)
2 JET
CHEVROLET
1958-69
283, 302, 307, 327
2 JET
CHEVROLET/GMC TRUCK
1955-68
265, 322, 327, 348 (INC GOV)
2 JET
CHEVROLET/GMC TRUCK
1958-69
283, 307 INC REPL CARBS
2 JET
CHRIS CRAFT
153" 2.5L 4CYL.
2 JET
CHRIS CRAFT
181" 3.0L 4CYL.
2 JET
CHRIS CRAFT
225" 3.7L 6CYL.
2 JET
CHRIS CRAFT
283
2 JET
CRUSADER MARINE
153" 2.5L 4CYL.
2 JET
CRUSADER MARINE
225" 3.6L 6CYL.
2 JET
CRUSADER MARINE
230" 3.7L 6CYL.
2 JET
CRUSADER MARINE
283" 4.6L 8CYL.
2 JET
CRUSADER MARINE
283”
2 JET
CRUSADER MARINE
292”
2 JET
CRUSADER MARINE
327" 5.3L 8CYL.
2 JET
CRUSADER MARINE
327" 5.3L 8CYL.
2 JET
DIVCO
1963
226
2 JET
GRAY MARINE
215" 3.5L 8CYL.
2 JET
GRAY MARINE
232" 3.8L 6CYL.
2 JET
GRAY MARINE
283" 4.6L 8CYL.
2 JET
GRAY MARINE
327" 5.3L 8CYL.
2 JET
GRUMMAN MARINE
300”
2 JET
KIEKHAEFER MARINE
181" 2.9L 4CYL.
2 JET
KIEKHAEFER MARINE
230" 3.7L 6CYL.
2 JET
KIEKHAEFER MARINE
250" 4.0L 6CYL.
2 JET
KIEKHAEFER MARINE
95.5" 1.6L 4CYL.
2 JET
MERCURY MARINE
MCM 140, 150, 160, 165 W/230" 3.8L, 250" 4.1L 6CYL.
2 JET
MERCURY MARINE
MCM 90, 110, 120, 140 W/95.5" 1.6L, 153" 2.5L, 181" 3.0L, 181" 2.9L, 185" 3.0L, 153" 2.5L, 185" 3.0L 4CYL.
2 JET
OLDSMOBILE
1955
2 JET
OLDSMOBILE
1957-58
TRUE TRI POWER
2 JET
OLDSMOBILE
1959-68
394, 400, 425, 455
2 JET
OLDSMOBILE
1961-63
2 JET
OLDSMOBILE
1965-68
330, 350
2 JET
OLDSMOBILE
1966
400 TRI POWER
2 JET
OMC
150, 155 W/225" 3.7L 6CYL.
2 JET
OMC
164, 232 W/185" 3.0L 6CYL.
2 JET
OMC
185, 200 W/283" 4.6L 8CYL.
2 JET
OMC
330" 5.4L 8CYL.
2 JET
OMC
ALL NU 80, 90, 140 MODELS W/91" 1.5L, 97" 1.6L, 153" 2.5L, 181" 3.0L 4CYL.
2 JET
PALMER MARINE
215" 3.5L 6CYL.
2 JET
PALMER MARINE
304" 5.0L 8CYL.
2 JET
PONTIAC
1955-57
2 JET
PONTIAC
1957
347 27-28
2 JET
PONTIAC
1957-65
389, 421 HP (CENTER OF TRUE TRIPOWER)
2 JET
PONTIAC
1958-68
283, 307, 327 (CANADA)
2 JET
PONTIAC
1958-69
326, 350, 389, 400
2 JET
PONTIAC
1959-66
389, 421 END CARBS TRIPOWER
2 JET
PONTIAC
1961
2 JET
PONTIAC
1966
389, 421” CENTER CARB TRI POWER
2 JET
REO/WHITE
1967
327 W/ VAC GOV
2 JET
REVLEY MARINE
225" 3.7L 6CYL.
2 JET
STUDEBAKER
1965
283
2 JET
UNIVERSAL MOTORS
UNIVERSAL MOTORS
198" 3.3L
2 JET
CARBURETOR NUMBERS:
1336-2076
1336-3594A1
1338-2633
1338-2991
1351-3635A1
1351-4032A1
1351-4263A1
1351-4263A2
1351-4263A3
1351-4282A1
1351-4293A1
1351-4871A1
1351-5202A1
1351-5203A1
1351-5204A1
1351-6065A2
1351-7263A1
1351-7354A1
1351-7355A1
1351-7356A1
1351-8480A2
1355-7355A1
17051989
17051990
17051991
17052516
17052517
17052518
17052519
17052520
17052521
17052525
17052534
17054600
17054621
17054622
17054635
17054641
17054649
17054656
17054657
17055008
17055013
17057358
17057359
17057360
17057380
17058361
17059050
17059052
17059053
17059054
17059055
17059056
17065188
17065198
17065267
17065279
17081060
17086064
17087311
7005810
7006100
7006770
7006825
7006970
7007171
7008004
7008005
7008383
7008387
7008388
7008389
7008393
7008394
7008399
7008695
7008696
7008706
7008930
7008931
7008936
7009345
7009831
7009832
7009907
7009908
7010070
7010647
7010648
7010649
7010716
7010717
7010718
7010719
7010750
7010958
7010959
7010960
7011131
7011132
7011135
7011143
7011149
7011155
7011224
7011350
7011460
7011500
7011702
7011703
7011706
7011709
7011712
7011713
7011714
7011952
7012035
7012047
7012133
7012147
7012202
7012205
7012233
7012450
7012451
7012452
7012453
7012455
7012457
7012500
7012503
7012702
7012703
7012902
7012905
7012913
7013007
7013008
7013009
7013011
7013013
7013016
7013018
7013020
7013026
7013033
7013034
7013035
7013037
7013044
7013052
7013058
7013060
7013061
7013063
7013064
7013065
7013067
7013082
7013100
7013353
7013652
7013974
7015015
7015017
7015019
7015040
7015052
7015058
7015066
7015068
7015070
7015072
7015076
7015087
7015088
7015089
7015097
7015098
7015852
7016000
7016007
7016122
7016215
7016238
7016280
7016305
7016307
7016312
7016349
7016403
7016429
7016510
7016559
7016604
7016605
7016606
7016710
7016716
7016724
7016726
7016728
7016729
7016805
7016820
7016821
7016905
7016911
7016912
7016917
7016936
7016946
7019007
7019008
7019018
7019040
7019052
7019058
7019064
7019067
7019069
7019070
7019071
7019072
7019073
7019082
7019082
7019090
7019092
7019093
7019095
7019860
7019863
7020007
7020008
7020018
7020023
7020024
7020040
7020041
7020046
7020047
7020048
7020049
7020051
7020052
7020053
7020057
7020058
7020059
7020064
7020067
7020069
7020070
7020071
7020072
7020073
7020082
7020088
7020109
7020140
7020141
7020142
7020143
7020146
7020147
7020954
7020956
7020957
7020959
7020980
7020981
7020982
7020983
7020992
7020993
7023007
7023008
7023009
7023010
7023018
7023022
7023027
7023040
7023041
7023042
7023043
7023046
7023047
7023048
7023049
7023052
7023053
7023056
7023058
7023060
7023061
7023062
7023071
7023073
7023075
7023077
7023078
7023079
7023080
7023081
7023082
7023086
7023096
7023142
7023143
7023145
7023146
7023161
7023162
7023186
7023188
7023189
7024046
7024047
7024052
7024053
7024062
7024074
7024075
7024078
7024079
7024080
7024081
7024100
7024101
7024102
7024106
7024108
7024110
7024112
7024123
7024127
7024128
7024173
7024175
7024178
7024179
7024183
7024185
7024186
7024188
7025040
7025042
7025046
7025047
7025052
7025053
7025056
7025057
7025058
7025060
7025061
7025062
7025066
7025070
7025071
7025074
7025075
7025078
7025079
7025082
7025088
7025089
7025103
7025123
7025124
7025140
7025152
7025156
7025159
7025173
7025175
7025177
7025178
7025179
7025181
7025187
7025188
7025189
7025252
7025253
7025254
7025280
7025403
7025404
7026040
7026046
7026047
7026052
7026053
7026054
7026055
7026056
7026057
7026058
7026059
7026060
7026061
7026062
7026066
7026071
7026074
7026075
7026084
7026088
7026144
7026145
7026146
7026147
7026180
7026182
7027033
7027035
7027040
7027041
7027042
7027044
7027045
7027046
7027049
7027060
7027061
7027062
7027066
7027071
7027100
7027101
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7027105
7027106
7027110
7027112
7027114
7027116
7027133
7027136
7027139
7028060
7028062
7028066
7028071
7028080
7028085
7028086
7028100
7028101
7028103
7028105
7028106
7028107
7028110
7028111
7028112
7028125
7028127
7028140
7028141
7028154
7028155
7028156
7028157
7028158
7028159
7028184
7028185
7028188
7029060
7029062
7029101
7029103
7029105
7029107
7029108
7029110
7029112
7029125
7029140
7029141
7031418
7031419
7032988
7032991
7036046
7036048
7036052
7036053
7036058
7036060
7036061
7036062
7036071
7036099
7036100
7036101
7036103
7036105
7036110
7036112
7036144
7036146
7036159
7036175
7036248
7036366
7036543
7036646
7037034
7037044
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7037053
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7037066
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7041839
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7041849
7042181
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7043182
7043183
7043184
7044182
7044186
7046653

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