Wow. Incredible numbers. Since its an 05 ECSB 4WD truck, it very well could be the HO 5.3L. That was the first year they were optioned in that truck. Its amazing what flat top pistons, aluminum heads, and a slight bump in CR will do for ya!
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Wow. Incredible numbers. Since its an 05 ECSB 4WD truck, it very well could be the HO 5.3L. That was the first year they were optioned in that truck. Its amazing what flat top pistons, aluminum heads, and a slight bump in CR will do for ya!
what year/model of a truck you have?
impressive # btw
-I agree that these are great numbers.Quote:
Originally Posted by txarkitekt
-What would ID the OP's truck as a "HO"?
Look in the glovebox for the option code L33 or LM7. The L33 is the HO 5.3, the LM7 is the standard 5.3.
Great numbers for sure out of an older 5.3. I bet it's a HO L33. I've never seen that high in a NBS 5.3.
what is your exact setup:hyper2:
Wow. now Im really pissed about my numbers. I have a motor a whole liter bigger and that 5.3 spanked it.
I just want to hit 300 in my 5.3 before I take her out for a 6.0, only 35 hp to go any ideas???? Great numbers nice truck
damn good numbers......
but what were the sae numbers and smoothing set on 5?
std and smoothing set to 0 will yeild the highest numbers
i put down 325hp 320tq sae, std put down like 350-360 cant remember exact now
Dang good numbers man! Just had my truck done at LG and only put down 357/350