Mixing bearings for clearance

[Chris "drooze" Wertman]

Originally Posted by Rich Biebel

There is no offset on a small or big block chevy rod. Pin hole and crank pin holes are on center......

I can't think of any common engines that use offset rods. Pistons pushing on rods off center from the rod? I am not familiar with any engine that has this design....

Its done in small bore engines all the time in their "street" trim, used to be more common it helps quiet forged slugs during expansion a bit and for example on a 2 stroke, well piston slap is a biggie since hanging ports is a great way to start a new small shiny part collection.

It was my understanding (apparently incorrect) that some of the small chevs did this commonly.

Not rather the rod is offset but from the journal to the pin in straight fashion is sometimes by say .030-070 pistons are also different for the pin offset.

I know in the LS stuff there is now a "offset rod" that puts it on center since the Hemi is using a LS 6.200 .927 rod, I wanted to see what options were available to get the CORRECT offset (as in 0) because the use of the Scat rods does just that it does not sit in the center of the pin, and my bearing sideload will be greater, cap stess on bolt greater at High RPM, and it would really flipping explain what I am seeing now on several motors in regards to the bearings along the radius side where the cranks mic perfect.....but it looks on the bearing like the journals arent square...

Like I said I thought the SBC was this way my bad.