Degreeing A Cam - Is Solid Lifter Needed?
Degreeing A Cam - Is Solid Lifter Needed? Over the summer I installed a cam in my 05 GTO LS2. I installed the cam straight up (dot-to-dot) and since have had a hard time tuning the car properly. This weekend I plan on degreeing the cam BUT I do not want to use a solid lifter since it requires pulling the head.
Would degreeing the cam with the current hydraulic lifter give accurate results? If I let the car sit for a full day will the lifters bleed down? If they do bleed down will they pump up if I crank the motor slowly by hand?
Any pertanent information would be appreciated.
Would degreeing the cam with the current hydraulic lifter give accurate results? If I let the car sit for a full day will the lifters bleed down? If they do bleed down will they pump up if I crank the motor slowly by hand?
Any pertanent information would be appreciated.
Over the summer I installed a cam in my 05 GTO LS2. I installed the cam straight up (dot-to-dot) and since have had a hard time tuning the car properly. This weekend I plan on degreeing the cam BUT I do not want to use a solid lifter since it requires pulling the head.
Would degreeing the cam with the current hydraulic lifter give accurate results? If I let the car sit for a full day will the lifters bleed down? If they do bleed down will they pump up if I crank the motor slowly by hand?
Any pertanent information would be appreciated.
Would degreeing the cam with the current hydraulic lifter give accurate results? If I let the car sit for a full day will the lifters bleed down? If they do bleed down will they pump up if I crank the motor slowly by hand?
Any pertanent information would be appreciated.
On The Tree
Joined: Aug 2006
Posts: 140
Likes: 0
From: Denver, CO
Yes you do need a solid lifter. You can make one by taking apart a used hydraulic lifter and putting "stuff" in it until you get the inside of the lifter filled. I like epoxy putty. Obviously you can't use it again. I have also put in washers until the correct height is reached. Then you reassemble the lifter.
I disagree. You do not have to use a solid lifter. Simply use your existing #1 intake lifter. Since the LSx powered cars have the lifter holders, I would keep the rocker on and everything and just put a dial indicator on top of the rocker. Just make sure when you spin the motor over that you continually get the same intake centerline number. I would also compare the base circle method to the lobe method to make sure you get the same number that way. If you do then you're golden.
