SSLS1

iTrader: (3)

ok well i just had my th400 installed in my car went out last night and was going to race, well on the motor everything seems fine, well on the bottle as soon as i shift into 3rd the rpms just stop climbing at 4500rpm and it feels like its losing power, theres olny one thing i could think it may be, maybe im losing fuel pressure on the big end?? im not real sure why it would run fine on the motor and like crap on the bottle, if anyone has any ideas it would be great, just a litle past info, with the stock 4l60e a month ago on the bottle it ran fine, it has set for a month doing the th400 swap