Soon im getting a cam to match my heads, and was advised it was a good time to do the lifters. Do i have to pull my heads to installe lifters or can i just pull the intake? Also, what kind if lifters is everyone useing? I was looking at these?! Whats the difference?

63-850-16 Comp Cams OE Replacement Hydraulic Roller Lifters, SB Chevy & LS1 $197.99 Buy Wish


63-875-16 Comp Cams "R" Hydraulic Roller Lifters, SB Chevy & LS1 $219.99

 

You have to remove the heads.

With Comp "R" you need adjustable rocker arms.

Try a search on the word 'lifter'.