ls1trucktech95

ok im new at this so can some1 plz tell me the difference between the 6.0L motors... like the LQ4 and the LQ9, and what would be better to put in my 1995 chevy silverado ext. cab 2wd... any help would be great.... thanks

Dmoney

iTrader: (22)

Either one. They are basically the same. The only difference is that the LQ4 has dished pistons and the LQ9 has flat top pistons...............

ls1trucktech95

thanks for the info

djsanchez2

iTrader: (14)

Since we are on the subject. I just found an all iron 6.0L w/ a 4L80E, is that just an older LQ9?

ls1trucktech95

i think there all iron, but the ls1.. i could be wrong tho

djsanchez2

iTrader: (14)

No later years had aluminum ls6 style heads. I know the blocks are all iron. I was just wondering why this one has iron heads.

nobreaks254

iTrader: (50)

99/00 6.0L had iron heads and the others had aluminum

12secSS

iTrader: (30)

LQ4 was introduced in 1999, it had cast iron heads. In 2001 the LQ9 was introduced and the LQ4 was upgraded to the new 6.0L 317 heads (which flow like 243 heads, but have a larger chamber). As mentioned the LQ9 is 10.4:1 CR due to the flat top pistons, while the LQ4 has 9.5:1 CR due to the dished pistons.

ls1trucktech95

cool thinks for the info