hitmann
03-01-2011, 08:21 PM
hey guys i have a 96 lt1 camaro mods lt4 hot cam, springs, 1.6 roller rockers, fully ported stock heads with bigger vaulves, fully ported matching intake, underdrive pulley, cold air intake, fully built tranny 2800 stall. just did all of the work about 2 months ago and when finished the car ran fine about 2 weeks after i took in to the track and ran 13.00 @ 104 mph no gears no tune no tires. that night the car started sputtering. now a month later tried to start the car it was a hard start i have to press the pedal down a little bit to get it started then when it does fire up in sounds real choppy like its only running on 3-4 cylinders for about 10-15 sec then it runs fine and has been doing this since. raced the other night and it wouldnt go past 5000 rpm's and it shut off and wouldnt start. we got it home changed plugs and opti and same start, now slight top end knock at 2000-3000 rpm's any ideas please help thank you.