p/v issues
Feb 25, 2005 | 05:45 PM
#11
TECH Apprentice
Joined: Dec 2004
Posts: 393
Likes: 0
From: San Antonio
Originally Posted by 02sierraz71_5.3
there arent valve reliefs on the 5.3 but instead a dished piston, the 4.8 have flat tops theres a good article around on the differences between the 4.8 and 5.3 it shows the top of the piston.
Or if you want just take a plug out and shine a small light in there look at the top of the piston and it will tell you
Or if you want just take a plug out and shine a small light in there look at the top of the piston and it will tell you
Feb 28, 2005 | 11:16 PM
#13
Originally Posted by Rick@Synergy
Can I ask why you decked the head .050???????
If you wanted to add compression, then either do it in the pistons, or change the castings.
Rick
If you wanted to add compression, then either do it in the pistons, or change the castings.
Rick
Feb 28, 2005 | 11:19 PM
#14
Originally Posted by jmproductions
So if you put a 5.3 crank in a 4.8, it would raise the compression and/or create valve clearance issues. Does anyone know how much compression change?
Feb 28, 2005 | 11:20 PM
#15
Originally Posted by 6.0vette
The 5.3 dish is -5 cc.
where did you get that info from Id like to read on it. Im wondering why gm did that Im guessing to keep compression down?
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