Well i've located plenty of 6.0 (2006 and up with under 15000 miles)in my area that i can buy for around1000-1300 complete but i will be running a carb so wont be needing some of it.Anyways are all the 06 and up heads(LQ9)or what casting numbers do i want to look for.Since i have'nt bought one yet i want to buy the best one the first time
lq9 is the silverado ss and caddy motor, and newer Vortech MAX option basic truck and suv engine is the lq4, look for head # 317 on the outer edge, under the front of the valcover, I know the 317 is up to 2005, not sure if the newer stuff is the same
LQ9 Applications:
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only [Badging on truck]
2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
2002-2006 Cadillac Escalade
2002-2006 Cadillac Escalade EXT
2003-2006 Cadillac Escalade ESV
2003-2007 Chevrolet Silverado SS
2004-2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only [Badging on truck]
2006-2007 Chevrolet Silverado and GMC Sierra VortecMAX Option
so are the (317'S)good flowing heads and also i know you can buy the lq9's pretty cheap bare from the dealer but i wonder if the valve size is the same on the 317's to swap parts455_82malibu said:
LQ4 and LQ9 use the same heads. They flow very very similar to LS2/LS6 spec heads (casting number 243) but have a larger chamber.
The LQ4 is the most common setup. I'm picking up a '05 LQ4 with 40k miles and all accessories Friday for $1350 with a 90 day warantee. The LQ9s can be found but expect to pay for it.
The differences between the two are the compression ratio (LQ4 is 9.4-1 while the LQ9 is 10-1). LQ4 has dished pistons while the LQ9 has flattops. Its also been said that the LQ9 may have slightly stronger rods, but I dont think thats been confirmed.
The LQ4 is the most common setup. I'm picking up a '05 LQ4 with 40k miles and all accessories Friday for $1350 with a 90 day warantee. The LQ9s can be found but expect to pay for it.
The differences between the two are the compression ratio (LQ4 is 9.4-1 while the LQ9 is 10-1). LQ4 has dished pistons while the LQ9 has flattops. Its also been said that the LQ9 may have slightly stronger rods, but I dont think thats been confirmed.
