coryratcliffe

Hey guys im just looking for some info from what i've read after installing a big cam you usually are left with a louder valvetrain. I have a a lunati voodo 227/233 cam with .584/.854 lift with a 113 lobe, also with this upgrade i installed dual valve spring timming chain and pushrods. Like i said i was wondering if the noise that almost seems like a sewing machine noise is normal.

Thanks for the input

-cory

Rise of the Phoenix

iTrader: (27)

From what I've read, most cams are going to make your valve train sound like a sewing machine. EPS claims their cams make for a very quiet valve train.

disc0monkey

iTrader: (10)

whats your lifter preload

coryratcliffe

They are just stock lifters

Greekey

iTrader: (3)

Are you using stock length pushrods?

BadgeZ28

iTrader: (28)

Did you check for proper pushrod length? If you are using the stock rocker arms, they are non adjustable. They rely on the correct length pushrod to properly preload the lifters. Camshafts can be ground on different blanks and have a smaller or larger base circle diameter. This measurement also applies to different cylinder heads and thickness of head gaskets.

coryratcliffe

i have 7.4 pushrods that came with the kit i got. i am running stock heads still thou

garygnu

how many miles on the lifters?did the heads come off the engine?if so what head gaskets did you use ?take your valve covers off and inspect the valve stem for lifter wear.if the rocker arm wear is in the middle of the valve stem your valve train geomentry is ok.

BOBS99SS

iTrader: (2)

I run a ms4 and my valvetrain was a lot louder,

disc0monkey

iTrader: (10)

i just tried a couple different lifter preloads and picked which was the quietest. for my setup it was .065

just count the turns past 0 lash, no need for a pushrod length checker or anything at this point.

blackdak318

iTrader: (3)

Lifters are making the noise, not the cam. It is very odd you went to a longer pushrod on an LS1 and are now saying you need something even longer. Yes the base circle of that cam is likely smaller but a vast majority of people would run a standard 7.400 pushrod on that and be fine.

G Atsma

13 years lateur.....

grubinski

Everyone has their pet peeve … we all know what pushes *your* buttons. 🤣🤣🤣

blackdak318

iTrader: (3)

LOL OMG I had no idea this thread was that old. I swear I found it on the front page of this Gen 3 Internal Engine sub forum but I guess not. Yeah I deserved that one.