Is there any difference between the 6.0 in the SS trucks and the regular 6.0 in the 3/4 or 1 ton trucks? Thinking of doing the 4L80E/6.0 test but am just checking out my different angles.

 

same block, different pistons
SS = 345hp
other 6.0 = 325hp

 

The only difference is the LQ9 6.0 out of the ss has flat top pistons and a higher compression ratio 10.4:1 I thank.The LQ4 6.0 out of the 3/4 ton has dished pistons and a 9.4:1 CR.

 

yea, the pistons change the compression

 

The LQ9 also has much better rods. They are deburred, shot peened, and bushed floating pins.

 

There's also some cast iron headed 6.0's running around (99-2000 LQ4's)...avoid those like crabs!

 

If forced induction or nitrous are in your plans the LQ9's higher compression will hinder your efforts.

 

So if i were to throw some juice at the son bitch i should grab a non SS 6.0?

 

Yes - the lower compression gives you more headroom to work with.

If you plan on installing a new reciprocating assembly anyway, then get the LQ9 and sell the old stuff as upgrades.

 

I Own A 2003 Chevrolet SIlverado SS With The LQ9 GenIII 6.0L V8 Engine And Thers Alot Of Mods That You Can Do With It. Besides With Just 345Hp Thats Pretty Impressive In A Extended CAb Truck, I Mean I Can Hold Off Ford Lightnings Until Around 73-76Mph. So Id Say That LQ9 Engine To Modify. . .Worse Gas Milage bc Of The Higher Compresstion, But We Cant Spend all Our Time Trying To Save The World. And YES Thers A MAJOr Difference Between The 6.0L 300Hp, And The 6.0L With 345Hp, And YOu Knoe Exactly What That Is Bc I Own A 345Hp 6L And A 300Hp 6.0L And Thers A MAJOR DIFFERENCE And That Catagory Would Be Plain And Simple Ol. . .. . . . . . .GRUNT!!!!