Hi all,

I'm giving a how-2 speech for speech class on how to replace the lifters in a gen III engine (which I've done before, it's just been a while), but I need a little backgound info to go along with it. One piece of info I was going to give was the difference in the types of lifters used btwn the gen I and the gen III engines. I'm not sure what type the gen I engines used though. Is it a hydraulic lifter?

Gen I: hydraulic ?
Gen II: unsure, hydraulic ?
Gen III: roller ?

I just want to be sure. Any other info you feel should be added, plz feel free to add.

Thanks a ton!

 

not all genI lifters are hydraulic rollers cuz my old man keeps wondering why you dont change lifters when you do a cam change on a gen3

 

gen III's are all roller. Factory gen I and II are hydraulic I belive, but you can put roller lifters in a gen I or II if you swap to roller rockers to. Im not 100% sure on that info though, so take it with a grain of salt. But I do know that all gen III's are roller

 

Gen 1- hydraulic flat tappet

Unsure of when gen 2 begins and ends But the LT1 is a Gen 2 and it has a Hydraulic roller tappet

Gen 3- Hydraulic roller tappet

 

GEN I hydraulic flat tappet
GEN II hydraulic roller
GENIII hydraulic roller

 

Thanks!