O.K. , to all you engine GURUS's . i was in a discussion about GMPP crate eng. #19210007 . it has a flat tappet cam shaft .435int./.460ex. lift , 212int/222ex duration . question is can one just swap swap to roller lifters by just swapping lifters ? we realize not stock factory lifters . but can/should it be done ??? thanks ...

 

If the block was not designed to use a roller cam then you need those retro roller lifters and the lock plate to hold the cam back.
Those lifter sets alone run from $289 for Howard ones to $400 ish for Comp cams ones, plus the cams run $100+ more on average. Your looking at $500 at least for new parts.

I was hoping once I pulled the motor for rebuild in a couple of years, since its a 87 with a flat tappet cam in it, it was designed for a roller cam, just not finish machined.
I can ebay all the stuff needed including a used cam for less than $200. $300 extra to me for a minor gain IMO is pushing it cost effective wise.

 

No... You need to swap cam and lifters. Would be worth it though. Roller cams are superior IMO.

 

Tom, does this block have the bosses for the spider bracket that holds the roller lifter dog bones in position?

 

i really don't know , it's a GMPP crate eng. that i'm considering . it's in the latest JEGS book page 21-s top center . also in GMPP parts catalog for this year . i think it may but not sure . thanks . ( next time you come down to the coast check in with Gulf Coast 3rd Gens )

 

I will check in, I hope to have mine painted within a couple of months. I got moving finally. LOL runs like a scalded dog.

 

i find it hard to believe that no one knows much about this engine . oh well , i'll keep searching . thanks for the replies .

 

im not to keen on this, but if it does have the bosses for the spider and its not tapped yet, does that mean i could tap it and use a roller cam?