Question pushrod length determination method
06-05-2007, 02:48 PM
#1
Question pushrod length determination method First off, this is my first time doing any internal engine work.
I bought LS7 lifters to replace my stock LS1 lifters. I made a couple of solid checker lifters from the old LS1 lifters using epoxy. I was going to use these for the length check, but now I am not sure if that is a good idea. There have been some comments at LS1Tech about the LS7 lifters being slightly taller at the cup than LS1 lifters. I cleaned my LS7 lifters w/ mineral spirits last night, and dumped them all in a quart container of oil. Should I just install my LS7 lifters (un-shimmed) and use them and my PR length checker to determine what length PR’s I need. Not having to pull the head and lifters again would save me a little work and time. I have read posts indicating some use this method. I do not understand the concern about the lifters being pumped up. With my LS7 lifters, out of the box, the cups are extremely hard to push down. Is not the internal lifter spring going to keep the cup pushed out to the extent of travel if I am careful when I using the PR length checker?
Thanks
I bought LS7 lifters to replace my stock LS1 lifters. I made a couple of solid checker lifters from the old LS1 lifters using epoxy. I was going to use these for the length check, but now I am not sure if that is a good idea. There have been some comments at LS1Tech about the LS7 lifters being slightly taller at the cup than LS1 lifters. I cleaned my LS7 lifters w/ mineral spirits last night, and dumped them all in a quart container of oil. Should I just install my LS7 lifters (un-shimmed) and use them and my PR length checker to determine what length PR’s I need. Not having to pull the head and lifters again would save me a little work and time. I have read posts indicating some use this method. I do not understand the concern about the lifters being pumped up. With my LS7 lifters, out of the box, the cups are extremely hard to push down. Is not the internal lifter spring going to keep the cup pushed out to the extent of travel if I am careful when I using the PR length checker?
Thanks
