How is every one doing on here I have been racking my brian for awhile now trying to figure this out and I'm glad i found this site. If anyone could help me out it would be great. I have a 99 silverado with 4.3 and i want to go to a 5.3. I was looking a getting the 5.3L from SDparts. What will work off my 4.3 on the 5.3 and what other parts will I need to get to finish the swap besides PCM, wiring harness, fuel injection, and exhaust. Was reading about one that did this to his I think that it was around a 14sec truck but had done alot more to the engine.

 

Welcome! Check out all the archive on the v6 -> v8 swaps, there's a lot of good info here. If I were you I'd actually look into a 6.0 swap vice the 5.3 swap though... way more potential.

 

hey thanks for the info and where's a good place to find aftermarket parts besides Jegs and Summit

 

What kind of parts are you looking for? Check out the sponsers ---->>>

Also regaurdless of getting a 5.3L or a 6.0L I would look for a good pull out long block motor that has everything on it. I think that will be cheaper then trying to piece to gether the fuel system and sensors.

 

You are right on that But Was kind of leaning on ordering the long block from scoggin dicky 332hp 352tq i can still go find one that is in a salvage

 

good luck with your swap.

 

welcome aboard

 

thanks i'm glad that i found this site it is answering a lot of question that i have for a swap had to look around but i found what i was looking for