Discussion Starter · #1 ·
Hey guys! i hope someone could help me out with this. I have a 95 serria with the 350 TBI motor. I recently just rebuilt it (will post pics) with vortec heads that are now 1.94/1.6 and gasket matched port polish etc, and im using the GMPP vortec TBI intake. now i think i may have made a mistake on picking out the right cam. it is as follows; valve lift .447/.447, cam lift .298/.298, SAE duration 291/291, .050 duration 223/223. ive been told this cam is usually used and works well in the 327 motors. Other mods to the truck are MSD 6AL, Blaster2 coil, Full length hooker headers into true dual 2.5" pipes with equilizer. Mufflers are Flo-Pro (dont like them, any suggestions for new ones?? these ones are to loud!!!) Its apparent that i need a custom chip made for my truck but what are my options or what else do i have to do?? Fuel pressure is at 12psi, stock injectors to small ?? Its weird how it runs, it feels like its starving for fuel , its very hesitant and very boggy. My air/fuel guage tells me that its lean while on my on gas but yet sometimes its rich, its really inconsistant. it seems smooth at idle but you can hear the ecm try and bring it down but goes to far and speeds it up again. Any info would be great!!!