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'71 C-10, $3500 https://www.ebay.com/itm/386993158138

bonus points subtracted for the truly awful eBay-AI-assisted description:

Just reading that I feel like I need a shower, I feel all greasy...

All I did was turn off burst knock and the KS DTCs, and somebody'd been messin' where they shouldn't in the catalyst lightoff spark table...

Look at the link in my sig, it doesn't have your injectors but it has both referenced & returnless data right next to each other so the differences in how they are set up are easy to spot.

'Return' meaning it has a vacuum hose from manifold to regulator, and not just that there is a hose for fuel return to the tank, right? It's the presence/absence of the vacuum reference that makes it...

https://www.hptuners.com/my-account/tunerepository/

146357

Titanium retainers on a street car are great as long as you never ever get an oil analysis done, and make sure to chalk up any bearing failures to cosmic ray strikes or Mysterious Acts of God's Love....

https://forum.hptuners.com/showthread.php?58157-Gen4-idle-tuning-guide

TCM is not part of the license, only the ECM hardware serial & your tune file. You can put your already-licensed file into an unlimited number of TCMs without buying more credits.

You could always call or email BTR. "Hey, I have these heads with these valves and these rockers and these springs at this installed height, it hits a wall at 6300-6400. We're trying to rule out a...

An intake manifold or other restriction won't do that though. Not even an elbow collapsing or something will make MAP higher. Pressure would continue to fall off with a restriction as engine speed...

MAP falls as expected with a not-up-to-par intake system right up until 6300, then when MAF/cylair take the nosedive MAP goes back up. Almost like something was being burped back up the intake ports.

The pressure sensor is often an expected/calculated/estimated value, not live and accurate. Yes, there is a real sensor there with 3 wires and everything and yes it does output an actual variable...

What rockers are they? Stud mount adjustable or pushrod seat adjustable? What's the thread pitch? 1-3/8 turns is a lot, depending on the pitch.

I always did hydraulic Gen 1 SBCs with only 1/2 turn...

Aftermarket rockers will need more spring to go to the same RPM as stock rockers. Heavier aftermarket valves will need more spring to go to the same RPM. There is no one-size-fits-all when there are...

Man, I wish they'd invent a way to verify fuel pressure with a keyboard, then I wouldn't have to spend so much time bitching at people for trying to do work on EFI without a gauge.

And the...

Well... did you look at the changes I put in your file? Tried it yet? --> https://forum.hptuners.com/showthread.php?109677-5-3-Turbo-Spark-and-Closed-Loop-issue&p=780297&viewfull=1#post780297

Injector data not correct. (I know, broken record... but it keeps being done wrong, I dunno man.)

146316

The table that was changed isn't used, the one that is used wasn't changed from stock...

What is the fuel pressure? How long does it hold pressure after key-off?

No Bosch O2s in GM vehicles, ever. GM/Delco, NTK, Denso only. No Amazon Marketplace.

If it has stock 2002 LS1 injectors why was the Injector Flow Rate table changed? What is the fuel pressure in...

Did you ever answer if it sounds like a rev limiter when it stops pulling? Sounds funny, goes flat, maybe some popping/banging? Or it just hangs at that RPM and sounds normal?

If the injectors are what the number on them claims, and you have a return/referenced fuel system, and it's at 58psi base, and it won't run with legit data... do you think the problem lies in the...

Misfires read lean at the O2 sensors. O2s do not measure unburned fuel, they measure oxygen.

https://forum.hptuners.com/showthread.php?107001-How-to-tell-case-ground-from-isolated-ground-O2s

146298

Since you just replaced the sensors I assume you've already worked out whether the harness is set up for case ground or isolated and made sure the new sensors match the harness?