| 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 | ||