LS1 cam
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Teching In
Joined: Dec 2019
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LS1 cam I’m rebuilding my LS1 motor had the machine shop clean and install new cam bearings for me. I’m currently putting it back together; so I got a new cam shaft the stage one summit racing ghost cam. I put it on but it’s pretty tight; I can’t turn it by hand but can turn it by wrench. So I took it out then tried using my stock cam shaft; moved a little easier still a little stiff, but I can turn it by hand. I used red assembly lube also. If any input would be appreciated thank you
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Teching In
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LS1Tech Sponsor
Joined: Jan 2008
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From: Ohio, Georgia, Nevada, Texas
A machine shop probably installed the bearings in the correct order, but even then we've seen tight bearings at times. Our first call would be to the machine shop and see if they want to have a look at it. We don't recommend this and it's a bit barbaric, but many machine shops have a cutter cam made from an old cam. This is basically using a high speed narrow cutting wheel across the cam journals at an angle to find the tight spot. A sharp deep trench .080 deep or so will work. Thorough cleaning must be done afterwards as shavings do re-enter the galleys.
Thread Starter
Teching In
Joined: Dec 2019
Posts: 7
Likes: 0
A machine shop probably installed the bearings in the correct order, but even then we've seen tight bearings at times. Our first call would be to the machine shop and see if they want to have a look at it. We don't recommend this and it's a bit barbaric, but many machine shops have a cutter cam made from an old cam. This is basically using a high speed narrow cutting wheel across the cam journals at an angle to find the tight spot. A sharp deep trench .080 deep or so will work. Thorough cleaning must be done afterwards as shavings do re-enter the galleys.
