| Cyl. Engine Bore | Years Comp. Ratio | NOTES: | Part No. Sizes | Rings | O.E. Assy. No. | O.E. Casting No. | Head Shape |
L4-109.6 |
1972-80 |
VB engines. Domed head .310" high. |
1168 |
2-1.5mm |
3879-23-2000 |
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L4-122 |
1979-82 |
Flat head. Early design ring pack. |
1182 |
1-1.2mm |
D97Z6108A |
HE01 |
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L4-133 |
1989-92 |
Turbo, hypereutectic. 2.57" dia. head recess .355" deep with four valve reliefs. F2 engine |
H3121 |
2-1.5mm |
E92Z6108D |
9F207A |
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L4-134 |
1989-92 |
Non-turbo, 2.61" dia. head recess .247" deep with four valve reliefs. F2 engine. |
3100 |
2-1.5mm |
E92Z6108A |
9F201 |
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L4-156 |
1981-88 |
Flat head, used in B2600 pickup. |
1288 |
2-1.5mm |
AM15-11-SAO |
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V6-245 |
1991-92 |
Navajo, 2.4" dia. head recess .305" deep. |
3134* |
1-1.6mm |
FOTZ6100B |
90TM-A1A/A2A |
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