Does this look right?
Thread Starter
Instructor
Joined: Oct 2011
Posts: 218
Likes: 3
Does this look right?
Big hole drilled in the crank for balancing??? 21mm x 33mm deep!? I've seen smaller holes drilled before, never this big...
I bought this shortblock build by a local shop Balancing Act.
ls3 block, ls3 rods, forged pistons and ls6 crank...
I plan to put this in a track car...
I bought this shortblock build by a local shop Balancing Act.
ls3 block, ls3 rods, forged pistons and ls6 crank...
I plan to put this in a track car...
Last edited by Z06VENOM; Mar 12, 2015 at 05:33 PM.
Burning Brakes
Joined: Jan 2003
Posts: 755
Likes: 32
From: Roswell Georgia
Judging by the position of the hole, I'd say that the shop was trying to lighten the crank, not balance it. All the additional holes for balancing with Mallory metal that I've seen were outboard in the counter-weight flanges - never near the center of the crank's rotation.
Thread Starter
Instructor
Joined: Oct 2011
Posts: 218
Likes: 3
Judging by the position of the hole, I'd say that the shop was trying to lighten the crank, not balance it. All the additional holes for balancing with Mallory metal that I've seen were outboard in the counter-weight flanges - never near the center of the crank's rotation.
I made a few calls and yes you're right, they only drill the counter weights to balance... I am still learning😉
This hole is either OEM or someone tried to lighten it before... I was told it is fine for my goal of 600hp?
Last edited by Z06VENOM; Mar 12, 2015 at 05:37 PM.
