lccontractors

The story is. I have an LT1 swapped into a 1946 chevy pickup. Just finished the project a month ago. The truck was running great but over the last week it has developed a situation were it stumbles around 2500 rpm and then feels like it's loading up until about 3500 rpm then it comes out of it. Does this only under a load, usually 2nd gear is worst. If I rev it in neutral, it does not happen. It has new plugs, plug wires, and an opti. I have attached a data log I pulled with my scanner. Nothing seems to jump out at me, but I'm not as experienced in reading this data as some of you. If you can offer any advice, I'd appreciate it.

AChotrod

iTrader: (17)

Disconnect the MAF and see how it drives

lccontractors

Sorry, I forgot to mention. I switched to speed density. I also had the egr, and down stream O2's elimintated.