lq4 vs lq9???

[BlackDenali]

What is the difference and what motor comes in what year, make and model truck....? ie: 2004 Yukon Denali???

 

[BlizzardX23]

LQ4 (6.0) in our Denalis
LQ9 (6.0) in the Escalades


LQ9 = 10.1:1 Compression
LQ4 = 9.41:1 Compression

LQ9 has roughly 20more hp due to compression? I believe

LQ4 = still better

 

[wmgood64]

why is the LQ4 Better??????

 

[BlizzardX23]

Because its much stronger, can handle a lot more abuse

LQ4 takes forced induction much better then the LQ9 (Supercharger, Turbo..etc)

LQ4 is cheaper to beef up

 

[wmgood64]

stronger because of the cast iron block???

 

[BlizzardX23]

I just realized I was thinking of the LS2 vs LQ4

LS2 is aluminum, LQ4/LQ9 is Cast Iron


and lots of people say they LQ9 (stock for stock) is stronger..however, like I said..if your planning of FI...the LQ4 will hold up a lot better due to the lower compression..

LQ9 takes premium?
LQ4 takes 87

 

[Rollin Thunder]

lq9 is also on the silverado SS and sierra denali.

 

[BlizzardX23]

and LQ4 is in the Van... lol

 

[TheFuzz]

The only real difference is in the pistons and maybe a slight varience on the heads, right?

LQ4 = dished pistons
LQ9 = flat top = slightly higher compression

If I had the choice, I'd still go with the LQ4 if it were me.

 

[BlizzardX23]

pistons/compression ratio = main difference yes