head swap
07-09-2007, 09:32 PM
#31
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Originally Posted by tdrumm
If you are going to use Richard, and I highly recommend that you do, talk to him about a set of his stage 1 ported 5.3 heads. I love mine 
. Well, at least I did back when I could actually drive my truck 
.
. Well, at least I did back when I could actually drive my truck .
Originally Posted by cherrypopper
guys how much should a 243 head be milled on a 07 5.3 ....i mean to raise my compression ..?
Good luck,
Richard
07-10-2007, 05:29 AM
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Originally Posted by Richard@WCCH
Thanks for the recommendation Tom. I'm sorry to see you're a victim of the dreaded "Broken 4L60E Transmission Syndrome".
07-11-2007, 05:44 AM
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Originally Posted by cherrypopper
do the 243 and 799s on the new 07 trucks have the ls6 valves the sodium filled the light ones? anyone know?
07-12-2007, 02:20 PM
#36
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Maybe they have 2 casting numbers for all there heads because there are 2 different foundries that make them. Just a thought. I used to work for GM and they often made the same component in more than one place.
07-12-2007, 02:26 PM
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Originally Posted by tdrumm
I think the lightweight valves were LS6 only. LS2s which also have 243 heads have standard valves, so I would imagine the truck engines do as well.
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