This is an old post guys - I did fight this car for a bit but finally got it running as strong as it should. The main issues were a vapor locking mechanical fuel pump, mufflers that were too restrictive, and very oddly the air cleaner made a big difference as well mostly on the low end & throttle response. It had a drop base on it and the lid was a bit close to the choke tower/bowl vents. A contoured moroso made a big difference in throttle response believe it or not, but the torque came from the mufflers and electric fuel pump. It made 479 RWHP on our local chassis dyno.

The burn pattern, as best I can tell, still is about the same. But the heads are coming off soon, so we’ll see if its changed at all. I think its from a rich t slot / ifr and the car mostly cruises on the t slots. I definitely have to fix that for this summer with the price of gas.