ENGINE YEAR DESCRIPTION CASTING # Part #
GENERAL MOTORS Heavy Duty Truck 8 Cylinder
250, 292 70-85 L6 propane, HD valves & seats   94675
350

 

 
71-86 V8 3 7/16" holes in each end, 3/8" sodium exhaust valves, hardened exhaust seats   13508
71-78 V8 normal Chevy bolt pattern, HD valves & seats   13507
71-84 V8 3/8" mounting holes if used on left, 7/16" mounting holes if used on right, H.D. valves & seats   13506
6.0L (364ci) 99-02 C & K Trucks, vin U, LQ4 engine, Aluminum OHV 12561873 13640
366 (6.0L)

 

 
68-85 HD Truck, match casting number 133, 328, 721, 864 13668
85-90 V8 small spark plug, 2 bolt alternator mounting 359, 052 13667
91-98 w/bolt on rockers 1140 13669
381 (6.2L)

 

 

 

 

 

82-83 Diesel, course thread injector, w/1.968 int, 1.653 exh 901 13790
Diesel, course thread injector, w/1.811 int, 1.653 exh 901 13791
83-87 Diesel, fine thread injector, 1.811 int, 1.653 exh 299 13792
83-91 Diesel, fine thread injector, 1.811 int, 1.653 exh 162 13793
Diesel, fine thread injector, 1.811 int, 1.496 exh 162 13794
92-93 Diesel. 1.811 intake, 1.535 exh 567 13795
395 (6.5L)

 

 
92-95 Diesel 567 13795
92-01 TURBO Diesel, intake bolts 90 degrees to intake surface (see diagram) 567 13795T
96-01 TURBO Diesel, intake bolts at angle to intake surface of head, Vans, Hummer (see diagram) 567 13796
454 (6.9L)

 

 
85-90 Small intake port, match casting number 045, 175, 236, 360 4844
91-95 Bolt on rocker arms, rotators on intake & exhaust 10114156 4954
96-01 VORTEC, bolt on rockers, center bolt valve cover 10141279, 12553566, 12558162, 12560241 4958
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