Do you have intakes and or cylnder heads for this engine
thanks for you time
For the 1963 Oldsmobile 394 engine, Offenhauser has historically produced several intake manifold options, including tri-power (3×2), dual quad (2×4), and six 2-barrel setups, but has not produced a single 4-barrel intake for this engine. At present, we are not producing new intakes for the 394 Olds, but you may be able to find used tri-power or dual quad intake manifolds from Offenhauser through collectors, swap meets, or online marketplaces. The part numbers for the 2×4 options were 5183 (low profile) and 5704 (high rise). For tri-power setups, part number 5019 was used, available in both 3-bolt and 4-bolt carburetor flange patterns.
For cylinder heads, Offenhauser has not produced aftermarket cylinder heads for the Olds 394; your best bet would be to search for OEM or used performance heads. However, Offenhauser has produced valve covers for this application.