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Carb swapped ‘97 vortec - SUCCESS!!!

OK - Help me out here. 97 454 Vortec. Manual trans - - - - If I'm reading and understanding correctly, I need an intake manifold, a hei distributor + ignition box, a carburetor, and a fuel pressure regulator. Nothing else since I don't need anything for my transmission? What intake/fuel...
- coachhick
- Post #105
- Aug 1, 2024
- Forum: LSX + Carb Swaps
Another help make my 454 Vortec run thread!

I replaced the cts by the thermostat also. No change. The codes I have are P0171 and P0507. There is no code for a misfire On the ride home today she felt and sounded like she was running on 3 cylinders the entire time. RPMs didn’t help. Struggled to keep highway speed. Would sometimes surge...
- coachhick
- Post #5
- Jul 31, 2024
- Forum: Engine Performance + Maintenance
Another help make my 454 Vortec run thread!

I saw the throttle stop screw on one of my multiple plenum removal adventures. Would you think that maybe its adjusted too open and the computer is having to add fuel to compensate? But that wouldn't explain it being a normal idle once the trims are maxed out would it? It's idling around 1,000...
- coachhick
- Post #3
- Jul 31, 2024
- Forum: Engine Performance + Maintenance
Another help make my 454 Vortec run thread!

I have a 1997 Crew Cab K3500 454 Vortec with an NV4500 and 4.56's and 148k miles. My dream truck - go figure! I owned it for 77 days in 2020, but sold it to a buddy after multiple random issues. A month ago, he sold it back to me. He had just put $3,200 into the front end and got it back...
- coachhick
- Thread
- Jul 31, 2024
- Replies: 5
- Forum: Engine Performance + Maintenance