Chris Mione
Newbie
I just went through the TBI-EFI-CARB drama myself. Same issue that you are seeing, idles fine but under load it would have no power and bog. Have a BBC car hauler. A few things to check:
1. Fuel filters - make sure they are new
2. Dizzy - check timing. I went to a HEI and dialed in initial-mechanical (springs)-vacuum (limited vacuum with Crane can)
3. Carb 1411- larger secondary jet - lighter spring to bring in power mode sooner
4. Check for vacuum leaks - spray starter fluid around base of carb and intake manifold - check hoses for cracks
5. Exhaust - after do all of the above and still having issue I cut muffler and CC out (it was the 4th so noise did not matter) and it solved my issue with power under load. Both were clogged.
Hope this helps.
1. Fuel filters - make sure they are new
2. Dizzy - check timing. I went to a HEI and dialed in initial-mechanical (springs)-vacuum (limited vacuum with Crane can)
3. Carb 1411- larger secondary jet - lighter spring to bring in power mode sooner
4. Check for vacuum leaks - spray starter fluid around base of carb and intake manifold - check hoses for cracks
5. Exhaust - after do all of the above and still having issue I cut muffler and CC out (it was the 4th so noise did not matter) and it solved my issue with power under load. Both were clogged.
Hope this helps.
