Engine Details • GMC 366CID (6.0L) GAS • 1966–98
Models
B6000, B7, C5000, C5000 Topkick, C6000, C6000 Topkick, C6500 Topkick, C7000, C7000 Topkick, C7500 Topkick, P6000, P6500, T6500, T7500
Liters
6.0
CID
366
Fuel / Delivery
GAS / CARB
Cyl.
8
Version
-
VIN
B, P
Desc.
-
Bore
3.94'' (100.0mm)
Stroke
3.7656'' (95.7mm)
Head
OHV
Asp.
N
Misc.
Truck: 1st Design - Thru 1985; 2nd Design - 1985 on (H5D - HD Emissions Control)
Available Part Categories
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Valve Seat for GMC 366CID (6.0L) GAS • 1966–98
10 parts found
| Part No. | Description | Quantity | Specs |
|---|---|---|---|
| 30658 | Exh. | 8 | |
| 30658+10 | Exh., .010" Oversize | 16 | |
| 30658+30 | Exh., .030" Oversize | 16 | |
| 30658S | Package of 4 each of 30658 | 8 | |
| 30658S+10 | Package of 4 each of 30658+10 | 16 | |
| 30658S+30 | Package of 4 each of 30658+30 | 16 | |
| 30680 | Exh., Replacement for Late Cylinder Head w/Factory Installed Exhaust Seat | 8 | |
| 30680S | Package of 4 each of 30680 | 8 | |
| 31777 | Int., Use w/1.940" Valve Head Dia. | 8 | |
| 31777S | Package of 4 each of 31777 | 8 |