bhop42

iTrader: (2)

I would like to know if the valvetrain noise I have is typical because I never had it stock to know the difference. It is an iron block 403 stroker with L92 heads & intake, SDPC behive springs, and a 22x/22x .581/.588 lift cam. Here is a clip:

98Camarod

iTrader: (43)

Did it just start doing it all of a sudden or has it always been like that?

Paint_It_Black

iTrader: (1)

What length are the pushrods? What did you set lifter preload at?

bhop42

iTrader: (2)

Unmilled heads, stock length pushrods, torqued to 22ft lbs. It's done this since I built the motor and installed it in my 96 Impala. This is why I am asking is this valvetrain noise typical in these LSx motors.

Paint_It_Black

iTrader: (1)

some is, but that's a little more chatter than I would expect. borrow a pushrod length checker and see what you need. If the base circle on the cam is smaller, and you're running stock compression height, you would need a slightly longer pushrod, like a 7.425

dca1042

as painted black said,
definitely use pushrod checker,and use decent chrome moly pushrods when you buy them.
cheers dave.

vn commodore,iron 427,dd,still waiting on l92 street warrior.

Richard@WCCH

iTrader: (3)

I hate the sewing machine sounds some engines make
It does sound as if the valve train could use a little more lifter preload. Perhpas a little longer pushrod would do the trick. I like to see 2 turns of preload from loose lash on the rocker arms. A little longer pushrod will help quiet down the noise.

Good luck,

Richard

WKMCD

iTrader: (2)

I run the Caddy lifters and they are pretty quiet with the proper setup.

mvvette97

iTrader: (18)

sounds like ya have a miss also. I would check for a bent pushrod

bhop42

iTrader: (2)

Pushrods have less than 6 miles on them. They are chromoly 1 piece PRW.