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Setting cold lash prior to break in. #663613
04/07/10 09:57 AM
04/07/10 09:57 AM
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
C
CJK440 Offline OP
master
CJK440  Offline OP
master
C

Joined: Jan 2003
Posts: 9,982
Ansonia, CT
Look to be breaking in a solid flat tappet small block. Iron block and heads. Alum rockers if that matters.

What do I add or subtract to the card lash spec just to get this broken in???


2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
Re: Setting cold lash prior to break in. [Re: CJK440] #663614
04/07/10 10:31 AM
04/07/10 10:31 AM
Joined: Aug 2007
Posts: 1,564
St. Clair Shores, Michigan
bigsbigelow Offline
pro stock
bigsbigelow  Offline
pro stock

Joined: Aug 2007
Posts: 1,564
St. Clair Shores, Michigan
I just set mine to what the cam card specified and didn't have any problems. I did check them after break-in and had to loosen them, though.


Ryan "Bigs" '73 Duster (BLKDUST) - Black, 100% factory sheet metal, flat hood, 346 cid, J Heads, and a bench seat. http://s268.photobucket.com/albums/jj1/bigsbigelow/ Best to date: 12.40 @ 109 mph
Re: Setting cold lash prior to break in. [Re: bigsbigelow] #663615
04/07/10 10:35 AM
04/07/10 10:35 AM
Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda Offline
I Live Here
aarcuda  Offline
I Live Here

Joined: Mar 2003
Posts: 15,478
the boonies
Quote:

I just set mine to what the cam card specified and didn't have any problems. I did check them after break-in and had to loosen them, though.




Hughes said to loosen em up a bit to give a more relaxed break in like an extra .003 -.005.

call them ad ask em. i dont remember exactly what they said


It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
Re: Setting cold lash prior to break in. [Re: aarcuda] #663616
04/07/10 11:07 AM
04/07/10 11:07 AM
Joined: Oct 2004
Posts: 1,946
Connecticut
5126brl No more Offline
top fuel
5126brl No more  Offline
top fuel

Joined: Oct 2004
Posts: 1,946
Connecticut

With allum. heads I think it is to set them cold at -2 thousands so as the head heat up they will loosen up. On mine I just set them to spec cold on the dyno. Then re-adjusted after. I did not pull the inner springs and used GM E.O.S. No problems 4 years later. Good Luck







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