408 with no tune
Thread Starter
Teching In
Joined: Nov 2007
Posts: 20
Likes: 0
408 with no tune okay need help with some questions first off would it throw any codes as far as a misfire code and how much of a difference is there in timing. Would the motor be running lean if so how lean well i know its lean just dont have a wideband so not sure on how much its lean would it be that badd for the motor to drive it even if u dont get on it just move it from one place to another at low rpms
okay need help with some questions first off would it throw any codes as far as a misfire code and how much of a difference is there in timing. Would the motor be running lean if so how lean well i know its lean just dont have a wideband so not sure on how much its lean would it be that badd for the motor to drive it even if u dont get on it just move it from one place to another at low rpms
Nobody can tell you how lean it will be or if it will be damaging to the engine; the stock PCM won't compensate for how lean the engine will probably run, though it will try, and then throw a code (or two).
It probably won't crank and run without some help, but you should be easy on it until you can get it to a tuner. I wouldn't drive it much if possible.
Thread Starter
Teching In
Joined: Nov 2007
Posts: 20
Likes: 0
well the guy that installed it told me that there might be a diffence in timing so i was just asking if there was dosent throw a misfire code but the ses blinks every now and then i just move it like twice i wont be driving it no more dont wanna mess anything up it has the texas giant cam but it will still idle half *** no help but u try and drive it and it dies thank for the help though
I installed a 408 into my trans am. It has a 232/232 cam in it. And a 9.5" converter. Between those two it threw P0300 codes. Also it ran lean. AFR at WOT was 14.0ish. I changed the volume inside hp tuners, and updated my VE tables and it runs better now.
