This cylinder head chart is a combination of information from several sorces listed below.
Service letters D-391 &  (266  superseeded 100-095-02(printed in the PGR))
COMPRESSION RATIO VERSUS ALTITUDE is from Jeremy Fiorelli's page
Conversion Chart Courtesy of Charlie Doty
 
 

Minneapolis Moline Cylinder Head Specifications

Cylinder Head casting number

GE 30 **          casting letters

Height  of        Head

Depth of Comb. Chamber

Volume in Head (CU.IN.)

Total Comb. Cham. Volume

Engine Model

Comp. Ratio

Comp. Presure at cranking speed
10A4202  GE30 _ ** 5 - 3/4 2 - 1/8 28.6 28.6 283 - 425
403 - 605		 3.5 : 1
4.35 : 1		 70 - 90
80 - 100
10A4203 A, B, C, S ** 5 - 3/4 2 - 1/8 20.6 22.0
22.5		 283 - 425
403 - 605		 4.2 : 1
5.55 : 1		 75 - 95
85 - 105
10A4204 D, K ** 5 1 - 3/4 18.9 20.0
20.5		 283 - 425
403 - 605		 4.5 : 1
5.9 : 1		 85 - 105
95 - 125
10A4205 N ** 5 1 - 3/4 15.7 17.0
18		 283 - 425
403 - 605		 5.2 : 1
6.7 : 1		 95 - 115
130 -150
10A4206 P ** 4 - 17/32 1 - 1/8 8.4 9.6
10.5
9.7		 283 - 425
403 - 605
336
HD504		 8.35 : 1
10.85 : 1
9.65 : 1
9.7 : 1		 170 -195
205 - 225
180 - 200
180 - 200
10A4207 4 - 17/32 1 7. 8.5
8.6		 283 - 425
403 - 605		 9.3 : 1
12.6 : 1  ***		 190 - 215
220 - 245
10A4208 U ** 5 - 3/4 2 - 1/8 24 25.2
25.3		 283 - 425
403 - 605		 3.8 : 1
4.9 : 1		 70 - 90
80 - 100
10A4209 E, F, H, W ** 5 1 - 3/4 14 15.9
16.0
15.3		 283 - 425
403 - 605
336		 5.5 : 1
7.3 : 1
6.5 : 1		 95 - 115
130 - 150
120 - 140
10A4210 M, Z ** 4 - 17/32 1 - 9/32 10.7 11.9
12.5		 283 - 425
403 - 605
336 - 504		 6.95 : 1
7.3 : 1
6.5 : 1		 140 - 160
175 - 210
150 - 175
10A4211 5 - 3/4 2 - 1/8 24 26.5 800 6.0 : 1 100 - 120
10A4212 5 1 - 3/4 17.5 20 800 7.6 : 1 140 - 165
10A4213 J ** 4 - 17/32 1 - 9/32 9.6 10.8
11.4		 283 - 425
403 - 605		 7.55 : 1
9.9 : 1		 160 - 180
195 - 215
10A4214 5 1 - 1/16 3.66 5.1 D283 - D425 14.9 : 1 440 - 460
*** Compresion Ratio Marked *** has been calulated with the total comb. volume , bore & stroke.
Service letters D-391 &  (266  superseeded 100-095-02) call it out as 17.6 : 1

** These numbers are from a Conversion Chart Courtesy of Charlie Doty
 
 
 

Cylinder Head casting  number

Height of           Head

Depth of  comb  chamber

Volume in           Head (CU.IN.)

Total Comb.  Chamber Volume

Engine Model

Comp. Ratio

Comp. Presure at Cranking Speed
10A4216 5 - 3/4 2 - 1/8 28.6 31.0 800 5.25 : 1 5.25 : 1
10A4217 5 1 - 3/4 15.7 18.3 800 8.25 : 1 150 - 175
10A4218 5 1 - 3/4 14.2 17 800 8.9 : 1 160 - 180
10A4222 5 1 - 17/32 5.1 6.1 D336 - D504 14.8 : 1 440 - 460
10A4227 5 - 3/4 1 - 3/8 18.3 20.5 HD800 7.5 : 1 150 - 170
10A4228 5 - 41/64 1 - 17/64 16.9 19.0 HD800 8.0 : 1 165 - 185
10A4229 5 - 29/64 1 - 5/64 13.9 16.2 HD800 9.2 : 1 200 - 220
10A4230 4 - 17/32 1 - 5/16 13.0 14.5

11.85

12.45
13.2

 336A, 504A,
HD504A
336A, 504A,
HD504A
605B
HD605		 6.8 : 1 *

7.1 : 1 **

8.2 : 1
7.8 : 1 *

 135 - 155

140 - 170

160 -190
160 - 190
10A4231 4 - 17/32 1 - 17/64 11.22 12.3

11.85

12.45
13.2

 336A, 504A,
HD504A
336A, 504A,
HD504A
605B
HD605		 7.8 : 1 *

8.1 : 1 **

9.1 : 1
8.65 : 1

 160 -180

170 - 190

190 - 220
185 - 205
10A4232 4 - 17/32 59/64 9.31 10.75

10.35

11.45
10.50
11.0

 336A, 504A,
HD504A
336A, 504A,
HD504A
425C, HD425
605B
HD605		 8.8 : 1 *

9.1 : 1 **

7.2 : 1
10.6 : 1
10.2 : 1

 190 - 210

200 - 220

145 - 165
265 - 285
245 - 265
10A233 4 - 15/32 53/64 7.9 9.35
 

8.95

 336A, 504A,
HD504A
HD425
336A, 504A,
HD504		 10.01 : 1 *

8.1 : 1 *
10.4 : 1 **
 

 240 - 260

170 -190
250 - 280
 
10A4239 4 - 13/32 3/4 6.85 8.85 HD425, 425C 9.0 : 1 200 - 220
10A5850
10A5850A		 4 - 1/16 1 - 7/32 3.06 4.46 D206-4 15.85 : 1 475 - 495
10A5851
10A5851A		 4 - 1/16 1 7.32 8.33
8.33
8.37		 165
206
220		 6.0 : 1
7.2 : 1
7.6 : 1		 125 - 145
150 - 170
150 - 170
10A5852
10A5852A		 3 -7/8 13/16 5.12 6.13
6.13
6.17		 165
206
220		 7.7 : 1
9.4 : 1
10.0 : 1		 155 - 175
185 - 205
195 -215
10A5853
10A5853A		 3 - 13/16 3/4 4.85 5.86
5.86
5.9		 165
206
220		 8.1 : 1
9.7 : 1
10.4 : 1		 160 - 180
190 - 210
200 - 220
10A5854 4 - 1/16 1 6.55 7.56
7.56
7.60		 165
206
220		 6.5 : 1
7.8 : 1
8.2 : 1		 135 - 155
160 - 180
170 - 190
10A5855 4 - 1/16 1 - 3/32 9.9 10.91
10.91
10.95		 165
206
220		 4.8 : 1
5.7 : 1
6.0 : 1		 85 - 105
100 - 110
105 - 115
10A5856
10A5856A		 3 - 15/16 7/8 5.66 6.67
6.67
6.71
6.25		 165
206
220
220A, HD220A		 7.1 : 1
8.6 : 1
9.2 : 1
9.8 : 1		 145 -165
175 - 210
185 - 205
210 - 230
10A5857
10A5857A		 4 - 3/32 1 - 1/32 7.5 8.55 M220, M220B 7.4 : 1 150 - 160
10A5858 4 - 1/8 1 - 1/16 7.57 8.34 220A, HD200A 7.6 : 1 150 - 170
10A5859 4 15/16 6.6 7.35 220 8.5 : 1 175 - 200
10A23134 5 1 - 7/32 4.48 6.34 D336A
D504A
DHD504A		 14.3 : 1 440 - 460
10A23529 4 - 1/16 1 - 7/32 3.40 4.08 D236 ? 15.5 : 1 475 -495
10A23791 5 1 - 5/64 4.39 5.22 D451 15.4 : 1 470 - 490
11A30490 7 6.8 D585, DHD585 15.3 : 1 440 - 460
20-1008136 4 - 1/16 1 - 7/32 3.06 3.76 DHD236 ? 16.7 : 1 475 - 594

* With 10A25953 Cavity Piston       ** With 10A21130 Flat Piston
? Engine I've never heard of . Believe it should be D336 and DHD336
 
 
COMPRESSION RATIO VERSUS ALTITUDE

Cylinder Head casting  no.

GE 30              casting letters

Height of          Head

Depth of comb chamber

Volume in Head (CU.IN.)

Total Comb. Cham. Volume

Engine Model

Fuel

Altitude
RE226C
10A2643
10A2647
10A2647
10A2648
10A2647
10A2647		 10.3
9.2
7.9
7.9
9.2
7.9
7.9		 EE, 165-4
EE, 165-4
EE, 165-4
EE, 165-4
EE, RTI
EE, RTI
EE, 165-4		 Tractor Fuel
Tractor Fuel
Tractor Fuel
Reg. Gas
Reg. Gas
Reg. Gas
LP Gas, N.G.		 Below 4000'
4000'-8000'
Above 8000'
All Except RTI
Below 4000'
Above 4000'
All
10A1987
10A3532		 10.2
9.1		 V206-4
V206-4		 Reg. Gas
Reg. Gas		 Below 4000'
Above 4000'
RE226E
RE226D
RE226C
RE226C
10A2648
10A2647
10A2647		 13.9
11.7
10.2
10.2
9.1
7.7
7.7		 206B-4
206B-4
206B-4
206B-4
206B-4
206B-4
206B-4		 Tractor Fuel
Tractor Fuel
Tractor Fuel
Reg. Gas
Reg. Gas
Reg. Gas
LP Gas		 Below 4000'
4000'-8000'
Above 8000'
Below 4000'
4000'-8000'
Above 8000'
All
10A4204 **
10A4205 **
10A4209 **
10A4210 **
10A4213 **
10A4206 **
10A4206 **		 GE30K
GE30N
GE30E
GE30Z
GE30J
GE30P
GE30P
GE30T		 5
5
5
4 - 17/32
4 - 17/32
4 - 17/32
4 - 17/32
4 - 17/32		 1 - 3/4
1 - 3/4
1 - 3/4
1 - 9/32
1- 9/32
1 - 1/8
1 - 1/8
1		 18.9
15.7
14.2
11.3
10.3
8.3
8.3
7.3		 20.8
17.6
16.1
13.2
12.2
10.2
10.2
9.2		 283-4, 425-6
283-4, 425-6
283-4, 425-6
283-4, 425-6
283-4, 425-6
283-4, 425-6
283-4, 425-6
283-4, 425-6		 Tractor Fuel
Tractor Fuel
Tractor Fuel
Reg. Gas
Reg. Gas
Reg. Gas
LP Gas, N.G.
LP Gas, N.G.		 Below 4000'
4000'-8000'
Above 8000'
Below 4000'
4000'-8000'
Above 8000'
Below 4000'
Above 4000'
GE30T 4 - 17/32 1 7.3 10.8 340-4 LP Gas All
10A4202 **
10A4208 **
10A4204 **
10A4203 **
10A4205 **
10A4209 **
10A4209 **
10A4210 **
10A4213 **		 GE30
GE30U
GE30K
GE30A
GE30N
GE30E
GE30F
GE30M
GE30J		 5 - 3/4
5 - 3/4
5
5 - 3/4
5
5
5
4 - 17/32
4 - 17/32		 2 - 1/8
2 - 1/8
1 - 3/4
2 - 1/8
1 - 3/4
1 - 3/4
1 - 3/4
1 - 9/32
1 - 9/32		 28.6
24.0
18.9
20.6
15.7
14.2
14.2
11.9
10.3		 31.0
26.4
21.3
23.0
18.1
16.6
16.6
14.3
12.7		 403-4, 605-6
403-4, 605-6
403-4, 605-6
403-4, 605-6
403-4, 605-6
403-4, 605-6
*403-4, 605-6
*403-4, 605-6
*403-4, 606-6		 Tractor Fuel
Tractor Fuel
Tractor Fuel
Reg. Gas
Reg. Gas
Reg. Gas
LP Gas, N.G.
LP Gas, N.G.
LP Gas, N.G.		 Below 4000'
4000'-8000'
Above 8000'
Below 4000'
4000'-8000'
Above 8000'
Below 4000'
4000'-8000'
Above 8000'
10A4204 **
10A4205 **
10A4209 **
10A4210 **
10A4213 **		 GE30K
GE30N
GE30E
GE30M
GE30J		 5
5
5
4 - 17/32
4 - 17/32		 1 - 3/4
1 - 3/4
1 - 3/4
1 - 9/32
1 - 9/32		 18.9
15.7
14.2
11.9
10.3		 21.3
18.1
16.6
14.3
12.7		 1210-12
1210-12
1210-12
1210-12
1210-12		 Reg. Gas
Reg. Gas
Reg. Gas
LP Gas, N.G.
LP Gas, N.G		 Below 4000'
Below 8000'
Above 8000'
Below 4000'
Above 4000'
Note: Some recommendations based on past practice rather than actual correction formula.
* Power Units only.
This COMPRESSION RATIO VERSUS ALTITUDE is from Jeremy Fiorelli's page with the ** additions
** These numbers are from a Conversion Chart Courtesy of Charlie Doty
 
Conversion Chart for GE Cylinder Head Numbers

Part No.

Casting No.

Replaced by Part No.

Replaced by Casting No.
GE 5030 GE 30 11C4202 10A4202
GE 5030 A GE 30 A 11C4203 10A4203
GE 5030 B GE 30 B 11C4203 10A4203
GE 5030 C GE 30 C 11C4203 10A4203
GE 5030 D GE 30 D 11C4204 10A4204
GE 5030 E GE 30 E 11C4209 10A4209
GE 5030 F GE 30 F 11C4209 10A4209
GE 5030 H GE 30 H 11C4209 10A4209
GE 5030 J GE 30 J 11C4213 10A4213
GE 5030 K GE 30 K 11C4204 10A4204
GE 5030 M GE 30 M 11C4210 10A4210
GE 5030 N GE 30 N 11C4205 10A4205
GE 5030 P GE 30 P 11C4206 10A4206
GE 5030 S GE 30 S 11C4203 10A4203
GE 5030 U GE 30 U 11C4208 10A4208
GE 5030 W GE 30 W 11C4209 10A4209
GE 5030 Z GE 30 Z 11C4210 10A4210
Conversion Chart Courtesy of Charlie Doty

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