I am rebuilding an LO5 with stock heads. I want to put in the ZZ4 cam. My question is can I do it with stock valve springs, Stock Lifters, Stock rocker arms, and stock push rods?

I will be replacing the heads later with AFR, but wanted to go ahead and get the cam in so I don't have to take EVERYTHING off next fall when I put on the AFR's.

I believe that you can. Someone correct me if I am wrong.

I think the L05 is flat tappet where the ZZ4 is a roller cam. If you get roller lifters you should be good to go though.

Lo5 is roller lifter.

PaulD ("guy" as he is known to my 3 year old) is correct so long as the LO5 is from a car. GM car v8s got roller lifters from 1988 if memory serves. But the truck LO5 versions didn't. If it's a truck LO5, then it will be flat tappet. Truck sbc didn't get them until the L31 for the 1996 model year. HTH. - Ken

Thanks for clearing that up Ken.

Thanks Chief, I wasn't sure if the truck motor was called an L05 or not.

Hope you had a good weekend. I started the Trans-go installation last night. As usual, nothing is easy. I'm going to have to remove the passenger side cat for access to the servo. Oh joy.

yeah yeah yeah get a ZZ4 cam.



see sig

Truck L05 is VIN K, car L05 is VIN 7, FYI.

zz4 cam with stock springs??!? you sure? The zz4 cam has a .510 exhaust lift. The stock springs can handle that?

what is the rpm range on the zz4 cam and is it roller

nope, you need to get some GM ZZ4 springs or LT4 hotcam springs

yeah its a roller cam.

1500-5500 rpm