Recommendation for push rods 7.350 or 7.40 ?
01-25-2009, 08:49 PM
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Recommendation for push rods 7.350 or 7.40 ? Built a 04 LQ4 with 317 heads and the 04 ZO6 cam.Originally I went with Trick Flow .080 7.350 long push rods,but when the engine is hot it sounds like I am getting valve train noise coming down from 2500-3000 RPM.Like the push rod is bouncing up and down between the lifter and rocker tip?
I kept the original 7.40 factory push rods from the engine.I put the 7.40 push rods on the left side of the engine and kept the 7.35s on the right side.I think it is quieter but I ralized the injectors are louder than any valve train noise.
When I built the engine,I colored the valve stem tip turned the engine over a few times and the wear pattern on the stem was high.Replaced the 7.40s with the TF 7.350s and the pattern was perfect dead center 1/3 of the valve stem tip.
Heads were milled .004 or .005
Any recommendations? Someone has to have built this combo before?
I kept the original 7.40 factory push rods from the engine.I put the 7.40 push rods on the left side of the engine and kept the 7.35s on the right side.I think it is quieter but I ralized the injectors are louder than any valve train noise.
When I built the engine,I colored the valve stem tip turned the engine over a few times and the wear pattern on the stem was high.Replaced the 7.40s with the TF 7.350s and the pattern was perfect dead center 1/3 of the valve stem tip.
Heads were milled .004 or .005
Any recommendations? Someone has to have built this combo before?
