Im looking at swapping out a 100k LS1 for a 370ci aftermarket LQ9. I dont know much about the LS3/L76/L92 platforms so I was wondering if this top end combo would bolt up ok or if i would run into any issues. Looking to keep 10:1 cr and the cam specs will be 238/242 .605/610 112 LSA+3 if that helps with the determination of effectiveness.

 

Everything should bolt up (I am doing the same). Someone smarter than me would have to comment on what cam/piston combo is safe in regards to clearance, but that would be my only concern. I'm going with deep dish pistons and a not-so-arrgressive cam, so I am not worried about clearance so much, but will of course check it out.

 

you have a cam before you bought heads? i would sell that cam buy the L92's then have someone like VA speed spec u a cam

 

ptv clearance confirmation is part of any h/c swap. there comes into play a few variables. so it should be checked any time new h/c are upgraded.
i would also look for a specific grind. which will better suit your particular combo. price range for off the shelf and custom grind is dam near the same or slighly more for custom grind

 

"cam specs will be", as in thats what i was leaning towards, but havent purchased yet. It seems id just need to swap the fuel rails for LS2 ones, but all the LS1 accessories should bolt up.

 

If you use the stock water pump from the LQ9 I believe you will have clearance issues with the throttle body and water pump inlet.