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I have a 93 Cadillac fleetwood with a 5.7. I am wanting to know what’s the most logical engine swap for this? Or is there much aftermarket support for these? My 5.7 is very tired with 340k miles.. thanks for the help!
This is not an easy swap even to an LT-1. If you want an LT-1, get a 94-96 car. The issues above do not even touch on the problems you will have. I belonged for years to.the ImpalaSS forum which included all B and D bodied cars of 91-96. We know what we are talking about and I am very knowlegeable about B-D body LT-1's. You will be just fine with a fresh L05. Those engines are reliable as you have gound. easy to get parts for. Good luck.OK. I thought so. The improved fuel injection and reverse cooling are great improvments over your year. Start searching stuff like, ''94-'95 GM F- or B- or D-body OBD-I LT-1 in '93 Fleetwood' and suchlike. You'll likely need a complete part-out or just an unmolested Fleetwood JY car for the entire wiring harness and PCM system compared to your year. Heads-up I think yours has the same 4l 60E tranny - I think, but yours may need diff. parts or reprogramming - something to do with PWM (search it). It's obvious I've not done the swap, just figure someone's had to have done it by now. You might get lucky with early responses, but I'd get searching ahead of anything.