46 GMC - great input. I wasn't being clear, but for a vehicle that's driven 3-4 times/month was wondering if the LS would be less troublesome over the long run. Haven't done much research yet(that's the purpose of the post) but hoping there is a "hot rod" chip/setting so don't have to fuss with all the modern emission kit.
Thanks
If you're only planning on driving it 3-4 times a month, I would stick with the carb. I don't think it's worth the hassle to get the EFI going to only use it that much. That said, if you can get the LS working I expect you'll want to drive it more than 3-4 times a month! They can be great if they're working well, but do you have the patience and skill to troubleshoot the EFI should something go wrong? If not, can you afford to have someone get it going again? Just things to consider.
As Tim mentioned, there is a lot to go along with the fuel injection to worry about.
I think my next hot rod will have an LS engine as they're wonderful engines, but it would probably either be carbureted or have aftermarket injection.
What emissions stuff are you worried about? Any fuel injected engine will need a minimum of one O2 Sensor, and the stock GM setup requires 2 per bank (I'm thinking of the 5.3). You might be able to remove the catalytic converters, but that would be about it. It's not like the 70's-80's engines where there are smog pumps and all that stuff.
Hope that helps.
