[DaleO]

I'd appreciate your insight with this problem I have. I've searched through the site and figure I'm floating valves or running out of gas. Not sure what the term "lays down" actually means. I'm running a 428 with a factory intake and topped with an 800 cfm quadrajet Cliff built. Cam is an Engle 216I/226E with lifts .458I/.465E. It has a TH400 and 3.23 gears. Driving along at about 40 mph I'll nail it and it drops into second and pulls great until approaching the shifting point (~4,800 rpm) and it starts the sputtering thing. I let the gas right off and it continues to sputter for about 4 seconds and then clears up. After all this I can then continue to accelerate though I don't kick the trans down again. It just keeps accelerating in top gear. I hope I'm running out of gas and am not floating valves. Maybe there is another cause you can think of? Thank you.