ENGINE YEAR DESCRIPTION CASTING # Part # w/camshaft Part #
w/o cam
General Motors V6 
2.8L (173ci)

 

 
80-86 Cast Iron, Carb, 1.600" intake valve, 1.307" exhaust valve 258, 292, 503, 882, 877   4619
85-95 Cast Iron, FI, 1.718" intake valve, 1.425" exhaust valve 4878, 4859, 4884, 1327   4630
87-89 Aluminum head, FWD 8651, 8696, 9834   4631
3.0L (181ci)

 

82-85 w/Rocker arm shaft 6293, 8445   4621
85-88 w/Rocker arm bolts 030, 248, 515   4623
3.1L (189ci)

 

 

 

 
85-95 Cast Iron, RWD & Lumina Van 4878, 4859, 4884, 1327   4630
88-94 Aluminum head, FWD, vin T 651, 696, 834, 511   4631
93-95 Aluminum head, FWD, vin M, D exhaust port 10154743   4632
96-98 FWD, vin M, D shaped exhaust ports 24503769   4633
99-01 FWD, vin M & J, D shaped exhaust ports 10218170   4670
3.3L (200ci)

 

 

78-79 1.600" intake valve 1347, 9007   4612
89-92 FWD, Cast Iron, vin N 4250   4681
91-93 FWD, Cast Iron, vin N, 8mm rocker bolt 2136   4640
FWD, Cast Iron, vin N, 10mm rocker bolt 0619   4641
3.4L

 

 

 

 

 

 

 

91-95 FWD, DOHC 24v, Aluminum, vin X, D combustion chamber  10127472   4634
RWD, OHV, Cast Iron, vin S 4879, 4884   4630
96-98 FWD, DOHC 24v, vin X, 4 leaf clover combustion chamber   24503315, 3153   4653
96-99 FWD Vans, OHV, Aluminum, Vin E 10218170   4670
00-01 OHV, Aluminum, vin E, w/A.I.R. holes 487   4687
OHV, Aluminum, w/o A.I.R. holes 487   4688
00-02 OHV, Aluminum, vin E, 10mm Rockers, w/A.I.R. 487 4687
03-04 OHV, Aluminum, vin E, 8mm Rockers, w/A.I.R. 487 4687-1
3.5L 2006 Impala, OHV, Aluminum 12590746
3.5L

99 FWD, DOHC 24v, Intrigue, vin H 12561568 12561569 4635LC 4635RC 4635
00- FWD, DOHC 24v, Intrigue, vin H 12562577 12562576 4636LC 4636RC 4636
229

 

80-81 1.830" intake valve, 1/2" NPT temp send unit 595, 553   4608
82-84 1.830" intake valve, 3/8" NPT temp send unit 595, 553   4608-3
196, 231

 

 

 

75-76 Odd fire engine, slanted valve cover rail 1249175   4611
77-78 Even fire, w/o A.I.R. 7051, 7722, 4170   4610
Even fire, w/A.I.R. 661   4606
79-81 w/A.I.R. 6293   4609
231 (3.8L)

 

 

 

 

 

 

 

 
79-81 w/o A.I.R. 4443, 098   4618
79-83 TURBO, casting # 5900 w/A.I.R. 4443, 5900   4607
82-89 Vins A, 7, & 9, 84-85 Vin 3 5900, 8445, 6293   4621
86-88 Vins 3 or B 7515, 4248, 3030   4623
1988 Vin C, FWD, roller cam 9723, 3485, 4250   4681
89-92 Vins C, L, & 1 w/10mm rocker arm bolt 0619   4641
93-95 Vins L & 1 w/8mm rocker arm bolt 2136   4640
95-98 Vin K or 1, roller rockers, heart shaped chamber 4781, 2261   4661
99-01 Vin K or 1, heart chambers, square exhaust ports 8134   4638
252 (4.1L) 82-89 W/A.I.R., metric accessory mounting holes 8445, 6293   4621
262 (4.3L)

 

 

 

 



 

 

 

 

 

 

 

85-86 Chevy engine, Carb 248, 268   4622
87-93 Pass Car, vin Z, adjustable rockers   4768, 4103,  9067, 3050   4625
87-91 Truck, vin Z & B 4768, 4103,  9067, 3050   4625
92 Truck, vin Z, adjustable rockers, 2 temp sensor holes (Romulus plant) 4768, 4103,  9067, 3050   4625
Truck, Vin Z, non-adjustable rockers, 2 temp sensor holes (Tonawanda plant) 4768, 4103,  9067, 3050   4692
93-94 Truck, vin Z & W, adjustable rockers, 2 temp sensor holes, notches over intake ports (Romulus plant) 064, 181, 209, 626   4624
93-95 Truck, vin W & Z, non-adjustable screw in studs, 2 temp sensor holes, notches over intake ports (Tonawanda plant) 064, 181, 209, 626   4626
94-96 Pass vin W, non-adjustable scew in studs, 2 sensor holes 8890   4696
89-92 HD Truck, over 8500 lbs. GVW, vin Z, 3/8 exhaust, adjustable rockers 4066, 4115   4625-3
93-95 HD Truck, over 8500 lbs. GVW, vin Z, 3/8 exhaust, non-adjust screw in studs, 2 wet temp sensor holes 99070   4694
96-98 Truck, vin W & X, VORTEC engine, non-adjustable screw in studs, heart shaped chamber 772, 140   4627
99-01 Truck, vin W, VORTEC, roller rockers 12557113   4699
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