- Aug 27, 2013
- 9
okay to start I have a 06 Trailblazer with the 5.3. I had a DOD lifter fail on me so I did the DOD delete.
New PCMofNC Rob style cam
LS7 lifters
LS7 valley pan replacement
new valve springs
PCV delete
PCMofNC mail order tune
everything else is stock. I'm getting some valve train noise after everything so I have ordered a pushrod length checker and waiting for it to some in so i can check my lifter pre-load. (re-used the stock push rods)
the questions I have is about the oil pump. I'm reading mixed things from different places online.
Do I need to change my oil pump to a non-DOD pump off an LS2?
do I NEED to plug the oil pressure relief vale in the oil pan?
I'm sitting at 55psi at idle with 5w30 (on a cold start then drops back down to about 45) I'm also in Chicago with the cold weather.
this is a daily driver that may see the track here and there.
I did not plug the DOD oil holes under the valley pan..
if I can just get the valve train to shut up after the new pushrods I will be happy..
I don't really want to drop the oil pan as it is a 4WD truck
until I get the pre-load checked I'm not spinning the motor over 3,000 rpm
TL;DR: Do I need to change the oil pump and block off the oil pressure relief valve in the oil pan?
New PCMofNC Rob style cam
LS7 lifters
LS7 valley pan replacement
new valve springs
PCV delete
PCMofNC mail order tune
everything else is stock. I'm getting some valve train noise after everything so I have ordered a pushrod length checker and waiting for it to some in so i can check my lifter pre-load. (re-used the stock push rods)
the questions I have is about the oil pump. I'm reading mixed things from different places online.
Do I need to change my oil pump to a non-DOD pump off an LS2?
do I NEED to plug the oil pressure relief vale in the oil pan?
I'm sitting at 55psi at idle with 5w30 (on a cold start then drops back down to about 45) I'm also in Chicago with the cold weather.
this is a daily driver that may see the track here and there.
I did not plug the DOD oil holes under the valley pan..
if I can just get the valve train to shut up after the new pushrods I will be happy..
I don't really want to drop the oil pan as it is a 4WD truck
until I get the pre-load checked I'm not spinning the motor over 3,000 rpm
TL;DR: Do I need to change the oil pump and block off the oil pressure relief valve in the oil pan?