A question for the audience.
I have a 1974 Fleetwood with the 472 in. I am pulling the engine to cure some oil leaks and freshen it up with new rings and shells. It's covered 97k miles. At the same time I am considering fitting a slightly warmer cam and wondered if the fuel injection setup from a 1976 500 would work okay. I have a complete system and wondered if it would run okay and give an increase in horsepower as on the 500's.
What's the opinion of the audience?
Regards
Alan.

Very old technology, virtually impossible to find new replacement parts. Was designed by BOSCH under license to GM. Was not a closed loop system except in its very last year of use. So no improvement in mileage. My opinion, not worth the effort.

Thats what I did in 2000... But my 472 was a hi comp 1970... It ran real well.. but under WOT it would go lean... I wanted to do a few more mods, so I got a aftermarket ecm.Haltech..all new sensors and laptop tuning...I love the fuel injection and would not have it any other way.. A good stock ecm on ebay will bring about $200 or more...I would not go to fuel injection if you are under any kind of time limit...or if this is your only car...

I have a 76 sedan deville with the injected 500. Performance is decent but the prolonged high idle will probably drive you crazy. The original ecm responds pretty slowly to warmup even when all of the sensors work. Otherwise it starts and runs very well in all weather conditions and I still prefer it to a carburetor.

I definitely recommend ditching the primitive analog ecm and go with a setup like the megasquirt. This will be really important if you change cams since the old computer can't compensate for any performance mods.

I have to agree with county mountie. I am in the process of megasquirting my 2 old mercedes 450"s and as soon as they are done I will start on my caddy 500. go9ing with a couple of GM throttle bodies. the versatility of a newer programmable system is great