ls7 lifters in a lt1
#16
I don't think it is right either, but its hard to argue with what my eyes are seeing.
Here is the proceedure (although pretty common sence) I used maybe I am missing something.
I pulled off the rocker, removed the pushrod. I then adjusted my length checker put the rocker on and tightened it down, and turned over the engine. I adjust the length checker until the roller on the rocker tip was as centered as possible. Then got push rods to match that size.
Sorry to hijack your thread OP but I think the information is relevent.
#17
When I measured the LS7's againest the stock LT1's there was about 0.100" difference in cup depth. I have 7.050"'s in my engine and I would probably be better off with 7.000"s. I think there may be a lot of people running without measuring assuming there fine when they aren't.
#19
I used a ball in the cup and measured with a dial caliper, it was roughly 0.1" I did this over a year ago and don't remember the exact figure.
#20
When I measured the LS7's againest the stock LT1's there was about 0.100" difference in cup depth. I have 7.050"'s in my engine and I would probably be better off with 7.000"s. I think there may be a lot of people running without measuring assuming there fine when they aren't.
#21
If thats the case then I'm not as worried about the great difference.
#22
I'm running the .027 Mr Gasket head gaskets. The difference maybe in the rockers, mine are Crane Aluminum RRs.
#23
#25
No they are not. You will need shorter pushrods if you wish to keep proper valvetrain geometry. They are definaely not direct replacement for LT1s, and it would also seem they are even shallower (but not as much) then stock LS1 lifters.
#26
#27
If you didn't replace your valvespring with a weak spring before you checked, you are probably allowing the movement of the lifter piston and possibly flex of the adjustable PR (mine flexed noticeably under the load of a regular valvespring) to affect your measurements. Did you take note of either of these things while you turned it over?
Here is the proceedure (although pretty common sence) I used maybe I am missing something.
I pulled off the rocker, removed the pushrod. I then adjusted my length checker put the rocker on and tightened it down, and turned over the engine. I adjust the length checker until the roller on the rocker tip was as centered as possible. Then got push rods to match that size.
Sorry to hijack your thread OP but I think the information is relevent.
Here is the proceedure (although pretty common sence) I used maybe I am missing something.
I pulled off the rocker, removed the pushrod. I then adjusted my length checker put the rocker on and tightened it down, and turned over the engine. I adjust the length checker until the roller on the rocker tip was as centered as possible. Then got push rods to match that size.
Sorry to hijack your thread OP but I think the information is relevent.
#28
If you didn't replace your valvespring with a weak spring before you checked, you are probably allowing the movement of the lifter piston and possibly flex of the adjustable PR (mine flexed noticeably under the load of a regular valvespring) to affect your measurements. Did you take note of either of these things while you turned it over?
That is very good info though.
#30
If you didn't replace your valvespring with a weak spring before you checked, you are probably allowing the movement of the lifter piston and possibly flex of the adjustable PR (mine flexed noticeably under the load of a regular valvespring) to affect your measurements. Did you take note of either of these things while you turned it over?