Lsierra32703

Can I put a LS1 intake on my 5.3-327 using the 5.3 fuel rails and injectors and changing my water pump to a ls1 water pump for intake manifold clearance and not alter the ecu programming or having to change pullies or serpentine belts..?

lsxtreme17268

iTrader: (2)

The throttle body won't clear the truck alternator bracket. You can modify it and buy and relocation bracket for the idler pulley. . You will need car injectors and fuels rail set up or adaptors for the truck injectors. It's not to bad of a job just takes a little planning. There are step by step thread somewhere not I can't find it now.
I have a relocation bracket and Truck alternator bracket already modified for sale if you need one. PM me this your interested

LS1MCSS

iTrader: (18)

You don't need a relocation bracket. You just have to mod the alternator bracket and then use a 2007 and newer truck water pump or a 2010 Camaro LS3 pump. Camaro pump will work better. The idler at the bottom right has since been removed as it was not needed.

lsxtreme17268

iTrader: (2)

Interesting , i havent seen it routed like that . Everyone seems to use the relocation bracket . Looks good like that . I ended up buying a ls1bracket to relocate the the alternator lower . I like the looks of it much better

garys 68

iTrader: (1)

What LS1MCSS said.