1fastws6_02

iTrader: (18)

well i hope i can get some input.here's my problem;installed my new motor an iron block 370ci started it up yesterday and in was missing mostly at lower rpm revved to about 4000-5000 rpm and it sounded awesome no miss at all (well at least you couldn't tell)granted it won't idle cuz it probably needs a tune (big cam)anyway some header pipes were real hot and some were just warm.it gave a 336 code and the tach won't work so i gave up for the day.
got out of work early and checked the crank sensor and wires looked good but replaced the sensor anyway and it won't even start now.what gives!!!!

PLEASE HELP!!!!!!!!!


ALL OPINIONS ARE WELCOME.

LS1MCSS

iTrader: (18)

Try putting the old sensor back in. If it started and ran with it, then it's bound to be good. With some header tubes hot, it sounds like some cylinders were real lean. You need to get a tune before you run it much more.

1fastws6_02

iTrader: (18)

thanks i'll try the old one tomorrow and get a tune.

1fastws6_02

iTrader: (18)

anymore opinions??

1320 killer

iTrader: (6)

I had a similar problem w/ my 370. It just needed to get tuned. once the tuner made some changes while the car was off uploaded it and the started fine and we worked on the tune from there.

1fastws6_02

iTrader: (18)

thanks for all the help guys but i still can't get it going i've decided to just leave the car alone in the corner maybe it will start next week.LOL