5.3 with 243 head PTV question
5.3 with 243 head PTV question Guys, I have a PTV question. My son's truck is a 2005 RCSB Z71. I have a CTSV that I removed some parts from. I am considering putting my 243 heads, LS6 intake and my old Vengeance VRX3 cam (226/228 590/590 114+4) on the 5.3. I know that in stock form with the 243 heads, it will cause it to lose a little compression going from the 61cc heads to the 64cc heads. What I was looking at doing was running the .040 gaskets and/or mill the heads some to get the compression back up on the 5.3. Does anyone know that with the thinner gasket or milling the heads, if I will have enough PTV clearance with the VRX3 cam. Or how much can I mill with the .040 gasket and still be safe. Thanks in advance for any help you guys can give me.
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Joined: Jun 2007
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Guys, I have a PTV question. My son's truck is a 2005 RCSB Z71. I have a CTSV that I removed some parts from. I am considering putting my 243 heads, LS6 intake and my old Vengeance VRX3 cam (226/228 590/590 114+4) on the 5.3. I know that in stock form with the 243 heads, it will cause it to lose a little compression going from the 61cc heads to the 64cc heads. What I was looking at doing was running the .040 gaskets and/or mill the heads some to get the compression back up on the 5.3. Does anyone know that with the thinner gasket or milling the heads, if I will have enough PTV clearance with the VRX3 cam. Or how much can I mill with the .040 gasket and still be safe. Thanks in advance for any help you guys can give me.
I know a little smaller cam would be better, but I already have the VRX3. It only has about 5K miles on it. I really wanted to use it, even if I have to put a small stall converter in it. I can do the converter. I was mainly worried about the PTV clearance. Thanks anyway, I know I should do a smaller cam, but wanted to use it since I alrady have it. I have the 243 heads and rockers. The only thing else I would have to get are valve springs and push rods.
