Hey guys, this may have been asked somewhere but I'm not sure what to search for to find it, but here's my question.
I have a 95 GMC with the 5.7 TBI. I am looking at doing a motor swap to gain more power. I am leaning back and forth between a 5.3 or a built TBI motor. I know I can find a junk yard 5.3 for cheap but I've already done it that way once in my 60 Bel Air and I don't want to go that way again. I just had too many headaches with it. If I do a 5.3 I'm going to buy one that been tested, has everything, and has a reworked harness and flashed ECM already.
If I get a rebuilt TBI, I know I will have a faster swap but that's a lot of money spent and I will never get more power out of that engine.
So finally to my question: Older blocks can usually be rebuilt cheap and built for some good power. But I don't know if the TBI engines have certain sensors that I need that the older blocks don't have provisions for.
Basically I am asking if I can swap in a carbureted block, put a TBI intake on it, and run it? Will I need to chip my ECM? Or get a bigger TBI?
I am just looking for the most cost-effective way to get more power out of my pickup without doing away with fuel injection. I know TBI isn't the best set up, but when it's cold it still beats a carb IMO. I'd like to do the 5.3 swap but it's my daily and as many problems as I had with my Bel Air it just scares me that the swap won't go like I want it to.
Thanks for the help
I have a 95 GMC with the 5.7 TBI. I am looking at doing a motor swap to gain more power. I am leaning back and forth between a 5.3 or a built TBI motor. I know I can find a junk yard 5.3 for cheap but I've already done it that way once in my 60 Bel Air and I don't want to go that way again. I just had too many headaches with it. If I do a 5.3 I'm going to buy one that been tested, has everything, and has a reworked harness and flashed ECM already.
If I get a rebuilt TBI, I know I will have a faster swap but that's a lot of money spent and I will never get more power out of that engine.
So finally to my question: Older blocks can usually be rebuilt cheap and built for some good power. But I don't know if the TBI engines have certain sensors that I need that the older blocks don't have provisions for.
Basically I am asking if I can swap in a carbureted block, put a TBI intake on it, and run it? Will I need to chip my ECM? Or get a bigger TBI?
I am just looking for the most cost-effective way to get more power out of my pickup without doing away with fuel injection. I know TBI isn't the best set up, but when it's cold it still beats a carb IMO. I'd like to do the 5.3 swap but it's my daily and as many problems as I had with my Bel Air it just scares me that the swap won't go like I want it to.
Thanks for the help