does any one know what the specs are on 07 all aluminum 5.3L,it came off a suburban,has 243 heads.is it a L33 or L59?

 

I have a 5.3 DoD E85 in an Avalanche and below are the specifics I've found.

5.3 Camshaft
196/201 duration
.467/.479 lift
1.89/1.55 valves
9.5:1 compression
3.78 x 3.62 bore & stroke

If you check out the GM Performance Parts website it will give you the nomenclature.

 

Thats an L33

here are the specs i know off the top of my head

All Aluminum Block
Graffel Coated Flat Top Pistons
243 Heads
Hi-Po Cam

The rest is stock 5.3 specs

315hp rated i think

 

and you got that truck ready for me

I'm coming for you

 

thanks for the info.

zzebes I blew 2 transmissions, fix them, and still waiting on you.

 

found out it,s a lc9,flex fuel engine,and cylinders deactivation. any input on compression and cc on cylinder heads?