Performance Parts Home

Chevy Big-Block V8 |  Cylinder Heads |  12363390  


Modifier Image
     
12363390  - Complete Oval Port Aluminum Head 2.25" Valves
     


Large Image

Extra Image
This head is identical to P/N 12363399, except it has 2.25" stainless steel intake valves, and 1.88" stainless steel exhaust valves with 11/32 stems. It also includes high performance valve springs, valve spring caps, keys and valve stem seals. These heads are designed for high horsepower 396, 427, 454, and 502 engines.  
Technical Notes: For 502ci engines, use head gasket kit P/N 12363411 and no sealant on the head bolt. For all big-block engines, use intake manifold gasket kit P/N 12366985, with intake bolt kit P/N 12367959, and cylinder head bolt kit P/N 12367779. Use the following components for service: P/N 12366987 Intake Valve 2.25"; P/N 1366988 Exhaust Valve 1.88"; P/N 12462970 Valve Spring; P/N 12366990 Valve Spring Retainer; P/N 3875916 Valve Spring Shim (Requires 2); P/N 12366992 Valve Lock; P/N 12366993 Oil Seal.  

Footer Image

Copyright © 2000 General Motors Corporation.