So Friday night I coaxed my iron-head, 9:1, carb/cam/headers/mild converter 1971 Charger R/T to it's best ET (13.44) since I got it running again in 2019.

I have what I think is a fuel starvation problem. Back in the day (around 2006), it ran a 13.42. When it ran the 13.42, the 660/330 ET ratio was 1.53 and the 1320/660 ET ratio was 1.55.

On the 13.44 run on Friday, the ratios were 1.55 and 1.57. Based on the 330 foot ET on Friday, if the ratios had been 1.53 and 1.55 instead of 1.55 and 1.57, it would have run a 13.14 ET instead of a 13.44, that's a big difference.

One difference is that in the old days, it had single plane intake and an 850 cfm carb, now it has a dual plane and 750. It 60-foots much better (it went 1.89 leaving from idle on Friday), but it doesn't feel like it pulls hard after 330 feet. Some of it might be the intake/carb combo, but a part of me thinks there is more going on. On a couple of runs lately, it the car has just all of sudden layed over near the end of the track, like it's not getting enough fuel at high rpm/mph (relatively speaking). Once it came back before the finish line, once it didn't.

The sending unit is about 20 years old, I am getting a new one, I am wondering if the sock isn't flowing well. The fuel pump is new. I can't believe the carb jetting is off too much.

Anyway, so I am not chasing my tail too much, I am curious about what other people's ET ratios are, especially if it's a high 12-sec or low13-sec car.

I'd really like to get into the 12s without putting my aluminum heads on yet.

Thanks.

Greg