Do you have to replace the lifters w/new cam? The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good. Thanks Matt |
Originally Posted by y-man The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good. Thanks Matt |
This is not true for roller lifters. You do not have to replace the lifters with a new cam!! |
It has always been necessary to change lifters with flat tappet cams but with Roller lifters I don't see the need. Maybe someone from a manufacturer could chime in here but if the cam/lifter contact is a roling wheel there is no wear pattern to contend with between cams. |
I am still running stock lifters as are many other cam-swappers. I did change my oil after 100 miles on the new cam, though. The only reason I'd upgrade my lifters is if one broke or I had a problem with valve float. If I did a head swap, I'd replace them too, but with less importance on the 'upgrade' part. Hydraulic Roller set-ups are easy on cam/lifters. |
When I put my cam in I re-used my 33k mile 1998 lifters. I disconnected the fuel pump fuse and primed them before starting. No problems yet! |
Originally Posted by y-man The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good. Thanks Matt , but Matt didn't say roller lifters, what engine, cam or anything else so I responded with the standard flat tappet answer. |
Originally Posted by 2001GMC All of you are right IMHO , but Matt didn't say roller lifters, what engine, cam or anything else so I responded with the standard flat tappet answer. |
Originally Posted by PREDATOR-Z Uhh, hello, this is LS1 tech not SBC tech. |
Guys, I appreciate the input. It sounds like if I'm using a roller lifter/cam setup I'm fine with the reusing them. If I have flat tappet lifter/cam setup then I need to change them when I swap the cam. Cool, thanks! Happy Thanksgiving to everyone (in the USA anyway)! Matt |
Cool, thanks! Happy Thanksgiving to everyone (in the USA anyway)! Matt :cheers: To all our service men and women :cheers: |
sorry, what I meant is Thanksgiving is a US holiday only and not celebrated by other countries. I meant no disrespect to us citizens abroad including our men and women of the services. I have friends and family members in IRAQ now and as an employee of a defense contractor, I take my job very seriously because I know that they're life depends on it. Happy Thanksgiving to US citizens around the world Matt |
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