6.0 questions
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Joined: Jul 2007
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6.0 questions ok i was given a 6.0 from a burnt tahoe. dont know what year but here are the numbers on it. on the block on the pass side has 12551364 spamped just below the heads. the heads are 317 heads and on the driver side inside the behind the flywheel is gmsmco. so i dont know alot about these so what cubic in is this and is it a lq4 lq9 what?
That casting was used for the LQ4 and LQ9, both 364 ci.
The heads (317) are also the same on the two engines, the pistons are the only difference, pull the heads. If the pistons are flat you have a LQ9, basically iron block LS2, and if they are dished you have a LQ4. Some people are going to chime in that the LQ9 has stronger rods, that is not true, GM made a design change from fixed pin to floating pin design and the LQ9 did get it first I believe bu that was a attempt to stop piston slap.
I found this PDF file that should be handy for others.
The heads (317) are also the same on the two engines, the pistons are the only difference, pull the heads. If the pistons are flat you have a LQ9, basically iron block LS2, and if they are dished you have a LQ4. Some people are going to chime in that the LQ9 has stronger rods, that is not true, GM made a design change from fixed pin to floating pin design and the LQ9 did get it first I believe bu that was a attempt to stop piston slap.
I found this PDF file that should be handy for others.
ok i was given a 6.0 from a burnt tahoe. dont know what year but here are the numbers on it. on the block on the pass side has 12551364 spamped just below the heads. the heads are 317 heads and on the driver side inside the behind the flywheel is gmsmco. so i dont know alot about these so what cubic in is this and is it a lq4 lq9 what?
