Can i use 4.8/5.3 heads on a 6.0?
11-13-2005, 06:34 PM
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No difference between 4.8 and 5.3 heads. They do have two different casting no's for the 4.8,5.3 but I don't know what the difference is.
Let me lear up what I mean. They are the same
they have tow different castings for BOTH the 4.8 and 5.3, but they are the same. Hope I didnt confuse you
Also the main reason not to go with the 4.8 heads is the flow. The 317's flow better than the 4.8/5.3 heads. The compression will be on th eedge if you have a LQ4, but still do-able, It will be too high if you have a LQ9
Let me lear up what I mean. They are the same
they have tow different castings for BOTH the 4.8 and 5.3, but they are the same. Hope I didnt confuse you
Also the main reason not to go with the 4.8 heads is the flow. The 317's flow better than the 4.8/5.3 heads. The compression will be on th eedge if you have a LQ4, but still do-able, It will be too high if you have a LQ9
11-13-2005, 06:41 PM
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I Have 5.3 Heads On My 6.0 And The Heads R Shaved 30ths And My Comp Is Around 10.7 So Still Good. All You Have To Do Is Unschroud The Valves And It Will Lower The Comp. And It Does Not Take Much To Do This And It Could Low It A Good Bit.
The 6.0 Heads Have 2.0 And 1.6 Valves And The 5.3 Has 1.94 And 1.55.
And The Intake Runners Do Not Flow As Good As The 317 Heads Witch Come On The Zo6 And 6.0.
The 6.0 Heads Have 2.0 And 1.6 Valves And The 5.3 Has 1.94 And 1.55.
And The Intake Runners Do Not Flow As Good As The 317 Heads Witch Come On The Zo6 And 6.0.
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11-13-2005, 08:08 PM
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Originally Posted by white1
No difference between 4.8 and 5.3 heads. They do have two different casting no's for the 4.8,5.3 but I don't know what the difference is.
Let me lear up what I mean. They are the same
they have tow different castings for BOTH the 4.8 and 5.3, but they are the same. Hope I didnt confuse you
Also the main reason not to go with the 4.8 heads is the flow. The 317's flow better than the 4.8/5.3 heads. The compression will be on th eedge if you have a LQ4, but still do-able, It will be too high if you have a LQ9
Let me lear up what I mean. They are the same
they have tow different castings for BOTH the 4.8 and 5.3, but they are the same. Hope I didnt confuse you
Also the main reason not to go with the 4.8 heads is the flow. The 317's flow better than the 4.8/5.3 heads. The compression will be on th eedge if you have a LQ4, but still do-able, It will be too high if you have a LQ9
11-14-2005, 08:01 AM
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LQ9 only came in the Escalades and SS trucks. If you have the heads off check to see if the pistons are flwt top, or dished. If they are flat top, you have the LQ9, if they are dished, you have the LQ4