I have a ly6 block that is at the machine shop getting ready to build im having it bored over and im going to hand port and pollish the stock heads a little and probalby go with a 224 cam, my question is will i be able to drive it on the cammed 4.8 tune i have until i can get it to the dyno shop? Could i get a tune from one of our sponsors with out sending my computer out since it is my daily driver? im getting close to putting it in my truck and im just worried about the tunning being a problem so any help would be so much appreciated.
-joe

 

how much over? you should runn a bit lean BUT at cruising speeds you should be able to drive it to your tuner no problem, DO NOT get on it.

 

i believe it was 30 over but ill have to look at the paper to be sure, i wont be getting on it at all and what size injectors would you recommend with those mods ? thank you for your help btw

 

30 lb injector s are more than enough for your application. U can get away with more fuel by putting a bigger fuel pump and leave ur stock injectors. Then theres no need to rescale your injector tables and no prob

 

thank you very much whould you by chance happen to know wher i can find a bigger fuel pump that will be a direct replacement for my stocker? I thought my stock injectors were 24#? I wont the timing need to be adjusted in order to even fire bc of the longer stroke of the 6.0? sorry for all the question thanks again for all the help
-joe

 

i missed the part where it said you were boring over a LY6. I thought you were boring over your 4.8, either way, the ly6 uses 40 lb injectors. So that should give you an idea of what you need.

to answer your question, no the timing wont change dramatically as the blocks have the same stroke, just different bore. The engine should crank up

and you are welcome

 

the l33 is a 5.3l i have a 4.8l the strokes are different from a 4.8 to 6.0