Gen V L83 AFM Delete

[JP_Property]

I'm curious as to how the L83 runs with a L8T camshaft. Does the cam shift the power production to a higher rpm range at the cost of low speed torque?
GM cams tend to be pretty conservative, making me think that the L8T cam would provide a modest bump in power at almost no cost to low end torque.

Regardless, I love these threads, and all of the information they provides. Nice post, @clinebarger .

https://www.dieselhub.com/specs/6.6l-l8t.html

I don’t feel that I lost any low end torque. The curve on the diesel hub if true shows over 300 ft/lbs with the 6.6 L8T around 1200 rpms. The truck runs good. I would say a modest bump is a good way to explain it. A 5.3 will never get those numbers with same cam but it seems to be a great truck cam. I couldn’t find cam specs on stock L83 cam. L8T cam specs are pretty easy to find.

L8T cam spec
https://www.lsxceleration.com/chevrolet-performance-gen-v-l8t-camshaft-12672469/

 

[clinebarger]

Chris: How did the piston tops compare to port injected 5.3L’s with similar mileage ?

I've seen far worse AFM Gen IV's with similar mileage.

 

[4WD]

I've seen far worse AFM Gen IV's with similar mileage.

Sounds like they got the combustion chamber right … Read where GM put extreme hours into computer models for that head design … Thanks …

 

[JP_Property]

Update 8-1-2024
100k on repair
Trans is original and still driving

 

[Exhaustgases]

And a job best done like this, rather than trying to do it in-situ, and did a very good job. Everyone here I bet is giving A++ 's.