Ls7 Piston orientation
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The dots on the pistons are always supposed to face towards the FRONT of the engine-regardless of what side they are on. The dots on the RODS... That seems to be an area of debate. Some say they can all face the same direction, others say 4 point forward, and the other 4 point towards the rear. I believe they say that because the rod journals on the crank have no fillet where the side of the rod big end meets on the crank journal.. But... if the big end is OFF SET like someone mentioned above.. that throws a wrench in that idea.
I found this link as well: https://www.corvetteforum.com/forums...rentation.html
I found this link as well: https://www.corvetteforum.com/forums...rentation.html
Thread Starter
Teching In
Joined: Apr 2022
Posts: 31
Likes: 1
The dots on the pistons are always supposed to face towards the FRONT of the engine-regardless of what side they are on. The dots on the RODS... That seems to be an area of debate. Some say they can all face the same direction, others say 4 point forward, and the other 4 point towards the rear. I believe they say that because the rod journals on the crank have no fillet where the side of the rod big end meets on the crank journal.. But... if the big end is OFF SET like someone mentioned above.. that throws a wrench in that idea.
I found this link as well: https://www.corvetteforum.com/forums...rentation.html
I found this link as well: https://www.corvetteforum.com/forums...rentation.html
I second that comment regarding posting a picture of the top of the pistons.
If installed correctly the dimples on all of the pistons will face forward with the dimples on 1,3,5,7 at the 7:00-8:00 position and 2,4,6,8 at the 1:00-2:00 position.
If installed correctly the dimples on all of the pistons will face forward with the dimples on 1,3,5,7 at the 7:00-8:00 position and 2,4,6,8 at the 1:00-2:00 position.
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
It has to do with rotation, so the offset would go to the same side regardless of which bank they're on. It's either all left or all right depending on which end you are looking from.
Thread Starter
Teching In
Joined: Apr 2022
Posts: 31
Likes: 1
TECH Senior Member
Joined: Jun 2016
Posts: 22,301
Likes: 3,625
From: Central Cal.