[Ponty]

Hi, I've just recently purchased a 68 Bonneville 400CI, TH400 with a 65 tri power system on it. The car starts fine, hot or cold, idles fine. No missing, popping or backfiring. I can drive around the streets with no problems, car doesn't stall or hesitate. As soon as I start to hard accelerate or floor the throttle I get a dead spot/delay happening. It doesn't backfire. The other day when I drove it, it had the slight delay there but would then drive through this & you could floor the throttle & the thing would hard accelerate. When you hard accelerate now the car will die down & sometimes stall, back off on the throttle & it will drive ok. The ignition system is a Street Fire CDI unit. According to the troubleshooting the LED light has no active faults. The vacuum advance for the dizzy is teed into the back lower centre of the centre carb as well as the transmission vacuum line. I think the problem is more a fuel issue than an ignition issue? I've removed all 3 air cleaners & opened the throttle linkage to fully open position & all 3 carbs are getting fuel when engine is off. Any advice would be greatly appreciated. Thanks.