Engine Startup Procedure rebuilt 2009 6.2l Denali (Rookie Question)

[Rokjhn]

So I did a little research on this subject.
Long story, short:
The ignition and volumetric efficiency tables are expecting the OE cam.
The closer the camshaft is to the OE camshaft, the easier it will be to drive it to the tuner.
The further the camshaft is from the OE, the more urgently that cam will need to be tuned for PRIOR to driving.

I put this cam in:

TSP L92 Stage 1 VVT Truck Cam​

So I did a little research on this subject.
Long story, short:
The ignition and volumetric efficiency tables are expecting the OE cam.
The closer the camshaft is to the OE camshaft, the easier it will be to drive it to the tuner.
The further the camshaft is from the OE, the more urgently that cam will need to be tuned for PRIOR to driving.

I put this Cam Kit into the new Engine: https://a.co/d/ci9SQyf
First picture is from the cam kit and second is factory cam specs. Think this is not much of a change from OEM, but I’m new at this..

 

[Foggy]

216*/229* with 114 Lobe Sep and .600 lift
is a Huge difference
That thing won't even run without tuning the airflow model
Been there, done that

 

[j91z28d1]

you're going to end up with a black bear tune anyways, it's not worth the risk to wash the rings out trying to start it on the base tune.

best to bite the bullet now, prime the engine oil and fire her up cleanly.

 

[Rokjhn]

This forum is great! Thank you all for your input, advice, and recommendations. I have a referral to a local tuner that I’m going to work with before cranking this thing up. It’s my first time working with an LS engine and I don’t want to screw it up. My last engine build\swap was in a ’73 Olds and boy have things changed

 

[Rokjhn]

Update: Bought the AutoCal v3 package from Black Bear Performance and sent them the stock tune files (ECM & TCM), they created a custom tune from my cam specs and the truck fired right up! Just finished the first 100 miles of break-in and it’s running great. Changing oil to start the next phase and once I’m done will record logging files to send to Black Bear for an updated tune. Very happy with their service and support.

 

[B-train]

I'm glad it worked out. That's a nice looking truck. I'd do a motor replacement any day with a body and frame setup in that good of condition.

 

[R467X]

Great stuff!