2014 5.3 L83 AFM Lifter ate my cam - Crank Damage

[Czar97]

Reading mixed information about our stock crankshafts. Some say it’s forged steel and one other place says they are cast. 

 

Either way, is it possible for the camshaft material that is now assumed to be in my oil (see pics below) to destroy my crankshaft?  

 

If so, any recommend crankshafts?

 

My engine builder and I have agreed to rebuild the engine to basically stock with the exception of a three angle valve job and some very light head work. A new stock (under .200) cam and of course GM LS7 lifters. Basically a stock version with none of the AFM parts. Lastly will obviously be a custom tune. 

 

Thanks for any thoughts on the crank. 

[Paintor]

IF the collapsible lifters for 4 cylinders fail...for the V4 mode...it eats your CAM.

 

GM bulletin causes, plugged filter in the intake manifold for the hydraulic solenoid that shuts down 4 cylinders so those lifters COLLAPSE and won’t pump back up. It does have a TSB.

 

IF...you are this deep into it. Do NOT install collapsible lifters so history can repeat itself. Use NON Collapsible lifters so V4 mode can never screw you over again.

 

Cheaper alternative but probably too late...market is FLOODED with GM L83 5.3 motors with less than 20,000 miles where you coulda electronically disabled V4...those motors are goin for less than $2k.

 

Do NOT let your motor EVER go to V4 mode. You aint the first chewed up cam I have seen.

 

BtW..yer pictures are CAMS...NOTTA crank.

Edited June 3, 2019 by Paintor

[Czar97]

LOL.  I know... the pictures I attached are of my camshaft.  Not my crankshaft.

 

Thank you for the info on the TSB for the clogged microscreen.  I had a chance to see one of those as well.  Not too many people reference that as the real AFM problem as you did.  

 

Again... I plan to use LS7 lifters NOT collapsible AFM lifters.

 

Any thoughts on the crankshaft?  

 

Can you provide some links to these used 5.3 Gen 5 L83's?

 

Thanks again.

[Frankielozano214]

I just did a dod/afm delete with non dod/afm cam, truck drives good now but have to drive M5 for now til I do the tune to turn off the v4 mode. Needa find a local tuner that can delete the afm/dod . Oh yeah I bought all the parts online from Brian Tooley Racing for about 820$  

[Frankielozano214]

Found a guy n Fort Worth to install everything 

[Czar97]

Steve at Accurate Engines. Near Grand Rapids MI. He said he gets the computers overnighted to him, 1 day to reprogram and then ships it right back to you. I believe it’s $100-$200 to delete AFM, remove factory torque management and all other typical programming deletes.  

[roadkill5.3]

If you have to motor tore down, why on earth would you put a stock cam back in? 

atleast go with a stage 1 or stage 2 cam. 

Seems asinine. 

[diyer2]

7 minutes ago, Jgreen2193 said:

If you have to motor tore down, why on earth would you put a stock cam back in? 

atleast go with a stage 1 or stage 2 cam. 

Seems asinine. 

Really.

He decided to do it his way.

[Mike GMC]

Maybe he has to pass emissions testing where he lives???