Finally!!! Was able to drive it home from my shop. Still lots of tuning to do. Help

[SuperNathanSunshine]

Today I was finally able to get the hood back on and get my truck out for some tests drives.

Bought the truck on a whim, then decided to paint it. That's when all budget broke loose and I accidentally bought a built motor on eBay. From there, I rebuilt the trans and rebuilt the axle while meticulously putting the whole thing back together.

I'm a professional maintenance mechanic by day, so taking stuff apart and putting it back together better than it was from the factory is my strong suit. Tuning engines isn't. Now I need the kind of help that I can't find locally. Hell I'd pay a guy if I could find a guy.

The major problem with the tune is that I am getting bogging and backfires through the carb under WOT. Regular driving is just fine. Off idle at a stop sign could be better. I'm trying to go slow and ask pros before I bonk something, lots of time and money invested. This is my first vintage engine tuning project and have studied YouTube and the Power Manual, but I'm out of my depth. I have not adjusted the carbs from how they came to me other than to synchronize them at idle and adjust linkage. I set the timing based on a best guess and what it seemed to like with a regular light and timing tape.

The Truck: 1969 C-30, factory chassis-cab, originally NCDOT truck with flat dump installed after it was decommissioned.

Engine: The motor builder is an aircraft mechanic and sent ALL receipts from when he built the motor in 1992. It was crated and never installed. He changed relevant gaskets, lump ported, and re-broke in the motor after storage. I took delivery straight from him. While this motor has been ran on a test stand and on a few short test drives, it's never been road tuned. Chevy 292 L6, .030" over with stock pistons, HMV-272 cam, lump port, twin Holley 2-barrels on a Clifford maniflold (water heated), Tube headers, GM HEI.

Drivetrain:SM-465 Trans. GM 14 Bolt rear with 3.73 gears.

Timing: 18° base, 12° vacuum, 36° total measured with timing tape.

Some Pics