Valve train noise
10-17-2012, 11:38 PM
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Valve train noise Got an 06 1500 ccsb i just swapped my 4.8 for a 5.3. While i had the 5.3 out i put the ls6 cam Lunati springs and comp lifters. Used the stock pushrods. I have significantly more noise in the top end now. Is this mainly due to my stock pushrods?? Is this to be expected?? What's the preload supposed to be? Thanks
10-20-2012, 09:21 PM
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Are my stock pushrods 7.400??? You said .030 to .040?? That's it?? No wonder it's making noise. I've got a .050 smaller base cam and put tighter tolerance lifters than stock as far as preload is concerned. I was under the understanding that stock preload was .060-.080?? Is that correct
10-20-2012, 10:03 PM
#4
Are my stock pushrods 7.400??? You said .030 to .040?? That's it?? No wonder it's making noise. I've got a .050 smaller base cam and put tighter tolerance lifters than stock as far as preload is concerned. I was under the understanding that stock preload was .060-.080?? Is that correct
10-21-2012, 12:05 AM
#5
I recently put the 850-16 lifters in my engine and the instructions that came with the lifters called for preload between .050 and .100. I ended up with .070 and it's quiet.
