Ok I'm gunna put a ls1 in my truck in a week or two will my intake and everythingfrom the top end work on it and what do I need to do to make it work I know a tune but if I don't know so I need some help

 

your cai will work but im pretty sure your intake manifold will not if you were asking about that too. what are you asking if it will fit on an ls1 from your 4.8?

 

Yes that what I wanna know my if top end will work on it

 

Yes, your intake, accessories, etc will all swap over from your 4.8 to an LS1. This question gets asked almost daily, usually with a 6.0 swap though, but the externals of the blocks are identical. Do a quick search for 6.0 swap or even LS1 swap and you'll find multiple threads with the same question and answer I just gave you

 

Agreed and about the only thing that you should come across is one bolt hole not being drilled & tapped in the block for the power-steering/alternator bracket, but that is nothing to set you back.

 

Ok I don't wanna search or what ever I want the right answer now I wanna make this happen now so if any ony got the right answer now what needs to be done to make it work I know yall know I'm not the first to do this

 

 

Good luck buddy...

btw, go back and read posts 4 and 5, there's your answers

 

An LS1 will not fit in your truck no matter what you do. Trust me, I've done all the searching you can do, it's a good thing you weren't willing to look on your own first, that would've been a lot of wasted time!

 

This took a whole 1.5 seconds...

https://www.performancetrucks.net/fo...archid=2477470

Want one of us to do the swap for you too?