LS6 Heads Standard On 4.8 And 5.3 Engines?
01-07-2009, 11:28 AM
#21
The motor I bought for my LSX swap is the L33 out of an 05 Silvy, it has the 799 casting heads and Alum. block. So I can't wait to install this beast in my 04 Colorado. When I have the cam done I will have the heads sent out to be ported and polished, a small gain, but a worthy one.
i didnt think aluminum blocks would be found on other than tbss and hi end 6.2 suvs with l92 motors.
u will see more gain with a better intake manifold and a slight mill of the heads for more scr than p&p. the 5.3 will amke use of the available airflow, it doesnt really ned anymore flow,
med. size cam, ls6 intake and hi flo exhaust will make some power.
01-07-2009, 02:18 PM
#24
TECH Fanatic
The 2004 LM4 and 2005 up LH6 5.3L in Trailblazers was aluminum as well. With AFM on the LH6
And the 07 GMT-900 truck also have an option all aluminum 5.3L. All the new ones are flat tops as well. (I believe)
And the 07 GMT-900 truck also have an option all aluminum 5.3L. All the new ones are flat tops as well. (I believe)
Last edited by Bo185; 01-07-2009 at 02:25 PM.
04-26-2009, 09:29 PM
#28
799 combustion chamber i got a set of 799s off a 08 truck 5.3 im putn on my ls1 for my toyota mudbog truck .is the combustion chamber smaller than the ls1 head if so how much i was goin to use them to get the compression up a little bit an better flow
09-29-2009, 04:35 PM
#31
And the 07 GMT-900 truck also have an option all aluminum 5.3L. All the new ones are flat tops as well. (I believe)
i got a set of 799s off a 08 truck 5.3 im putn on my ls1 for my toyota mudbog truck .is the combustion chamber smaller than the ls1 head if so how much i was goin to use them to get the compression up a little bit an better flow
