EGR Valve: 81-88 GM V8 - 305 carby V8The Exhaust Gas Recirclation Valve is located on the manifold .. in this case from 81 88 Camaro & Firebird 305 V8 Carby. note the triangulated base.. it will help show the difference you many find on trying to identify yours. usually California based cars carby .. H or G code engines. Works on Carby Cars.. not TPI Tuned Port Injection the imaged egr is what you get.. check first.. dont' rely on general specs as egrs changed from first sold US State or