thx for info. the 454 is a 94 for sure. it is in a motor home that is a 350 chevy chassis.
It does have a distributor and a carburetor. I did notice computer sensors in the manifold. sending the ecu out for a cleaning sounds like a perfect option.depends on cost. anyone know who does that? If they do clean it I suppose I can install regular gauges ( not fed by ecu) so I would thing only motor and trans is controlled by ecu. since its a 72 truck it is exempt from emissions. maybe I can loose some smog crap too. I know nothing about the ecu era but learning a little bit. Sure would be nice to drop that 454 in the 72. Would actually save me $$ since the 402 needs work. I have been told I can sell that block for $$ on ebay. Who knows, might get a wild hair and rebuild it once its out.