Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Nov 7, 2010 | 11:23 AM
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samuel642000's Avatar
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Default Need help with swap

So here it goes, I can pretty much take any part off a car and replace it but never taken the time to learn how everything works seperatly. I'm trying to get all my research out of the way before I actually start with the swap and try to avoid as many problems as possible. I'm sure I'll have tons more questions after I start(mainly with wiring) but wanted to get a decent foundation of knowledge before hand.

The plan:
I have a 96 Chevy 1500 z71, and am wanting to swap either a 5.3 or a 6.0 into it's place. I'm not looking for much over a stock truck that's reliable and gets better than the current 9mpg.

I plan on using the current trans thats in it.
Using these motor mounts http://carshop.carshopinc.com/produc.../98457/CSP2370
plan on using the stock exhaust for now.
Ac/delco in tank fuel pump.
don't want DBW

First batch of Questions:
1. Whats the easiest way to be able to use all the accesseries i.e.. A/C , PS, PB? Will the old hoses just hook up to the new parts on the new motor? Or will I have to use the old pumps?
2. Probably my biggest apprehension about doing this is the wiring involved. Do I just splice in the harness from the new motor, to what's already there? Will I need to get another fuse box for it? If i got an aftermarket harness and ecm how does that get hooked up? (example https://ls1tech.com/forums/conversio...ss-option.html )
3. And the least of my worries at first is what should I do to the motor while it's still on an engine stand, to help it breathe better and get better mpg's? Keep the truck intake or swap it for a ls1 intake? different heads? Or should I just pretty much keep it stock for the results I'm looking for?

These are the main threads I have been studying for my info so far:

https://ls1tech.com/forums/conversio...ng-basics.html
https://ls1tech.com/forums/conversio...swap-faqs.html
https://ls1tech.com/forums/conversio...-progress.html
https://ls1tech.com/forums/conversio...silverado.html
https://ls1tech.com/forums/conversio...-98-tahoe.html
http://www.performancetrucks.net/for...d.php?t=443736

Thanks for any help anyone could give me mainly clearing up #2 would be a big relief for me.
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