that is not what i said,i have never seen a kellog in a factory gm shortblock but anything is possible.

I've opened up 6-8 stock 502 Mag motors all gen 6 and they all had Kellog cranks in them, I was just verifying your post, back to Randy, the pics to me look like the rods got real hot, clearance issue like stated before ?? I think the dyno got all the run time out of this motor

i know that gm is scats biggest account but i guess they will go elsewhear to get what they need.the reason for my post was because every one i have had apart had a scat crank.

Geez how the hell can u gain this type of knowledge! totally jealous

Well, I took the crank down to the engine shop and Mike might be right about them using their own flywheel because he brought out a neutral balanced wheel to see if it would fit and told me another person mounted the engine to the machine. He is going to polish the crank & wants me to bring a rod-piston combo, the flywheel, & the balancer so he can recheck the balance. Hmm, I thought I paid for that already,, twice!! Gotta love it!! Either this is an innocent mistake or I got purposely screwed. I will look for part # on the bearings tomorrow, I forgot to look when I was taking pics.

well you learn something every day,i have a 502 in the shop right now and it is disassembled.i took a look at the crank and it is a kellog.

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Not for sure but it looks like INT an internally balanced crank and not a nuteral balancer

i agree,the engine is internally balanced and needs a neutral balancer&flywheel.randy,that crank requires narrowed bearings.do not reassemble it with regular bearings or it will be short lived.also,if you remove the bolted on counterweight from the balancer you will have the neutral balancer you need.

This engine is so screwy, as far as I know from personal experience this crank and this balancer ran fine on the dyno. The flywheel is suspect. If everything gets checked AGAIN in front of me so I can see it for myself, and I reassemble it with the correct bearings at proper clearances it should run shouldn't it? Apparently the builder in Omaha was a drunk monkey or something. I will not be sending him a Christmas card!!