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-   -   big block chevy knocking when cold (https://www.racingjunk.com/forums/showthread.php?t=26417)

russ67chevelle 11-23-2009 11:43 PM

gotta remember those dodge guys are a lil different :?

a chebby slam.... :roll:

DRTRCR22 11-24-2009 10:07 AM

When was the last time you adjusted your lifter rocker arms? If they are hydraulic lifters, as the cam wears the lash gets greater until they will start ticking away when cold. If the noise is up high it could be rocker arm lash slap. It is the easiest and simplest thing to check first. Just a 1/4 turn in of each rocker nut will tighen up your hydraulic lash to within specs. If solid lifters you should be checking them at regular intervals anyway...

mopar1968 11-27-2009 09:06 PM

Yes we sure are, we own the best :!: :!: :lol: :lol:



''JUST MY TWO CENT'S WORTH''
from the quiet one

russ67chevelle 11-27-2009 10:32 PM

:roll:

Pwmax 11-29-2009 04:54 AM

I would also say piston slap, If you have bearing problems, at idle, you would have 0 oil pressure, that would go up a little as you revved it, and the knocking would be proggressivley getting louder and louder the longer you kept driving it like that, and, it wouldn;t go away when it warmed up. Years ago, I has a 350 that would do that. Stock, who knows how many miles, I bought it as a runner, put a cam in it, intake, carb etc, and BEAT the snot out of it. For 3 years it did the same thing. Every morning, knock for about 2 minutes, and go away.


Frank

j0694 12-09-2009 06:31 PM

thanks for the replies


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