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99 motor swap question

1222 Views 12 Replies 4 Participants Last post by  Motörhead01
Here's a question the truck I'm having problems with is a 99 gmc k1500 5.7 vortex it ended up being the crank bearings it chewed up my crank pretty good well here's the question I have a 93 Chevy gmc with the 5.7 but it's carburated so I was wondering if I could take the heads and intake off the 99 and put them on the 93 block and use it in my 99 and have it bolt up to my 99 transmission it has the 4l60 or whatever in it also the 93 is 2wd and my 99 is 4x4 please let me know all info that would need to be done to make this happen thank you
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Yes you can. The engine blocks are the same. Just use your 99 heads and components (intake, distributor, ECT.) They will bolt up to the 93 block and the transmission will bolt up too.
The 5.3 is an LS engine. It is a total different animal than a 5.7 L Vortec. Although the trans will bolt up. None of the engine control system is the same between the two. It would be very easy to swap the 93 5.7 L. as the engine blocks are the same.
You can put the 5.3 in you just need mount adapters. If you can harvest the pcm and harnesses out of the other truck it makes it much easier. I don't know if these are the righ adapters for you but here is a set
I'm not trying to offend anyone, so please don't take this the wrong way. GM has always been grate about the parts fitting from one to another. As I am sure most know, you can get a motorcycle (Boss Hoss)with a Chevy V-8 on it, proving the point that you can put nearly any engine in nearly anything you want to. The point of my reply about the 5.3 is that it would be much easer to replace a 5.7 L with a 5.7 L If you do a 5.3 then you need the computer and wiring to manage and support the 5.3 The 1993 5.7 engine block is the same block as the 1996 5.7 L is. If he uses the 1993 block and uses his 1996 top engine components,(EG heads, and all the upper section of the engine) this should be a easy swap. IMO the 5.7 L (350) is the best engine ever made, and that's why GM made it for 35 years. I would never take out my 5.7 L to put an LS engine in its place, but I know people do. When the day comes for me to do an engine swap, I will do a 383 Vortec stroker, but that's just me. Again like I said, please do take this the wrong way.
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LOL I guess my passion got the best of me, You are rite Picky, he did ask if it could be done, I hope I didn't offend, that isn't what I wanted to do.
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