put 92 lt1 motor in my 89 burban

i just put in a lt1 1992 motor into my 89 suburban and used my intake off the old motor...now i hookedm the plug wires up correctly... well best to my knowlege...i turn the motor over and it just blows gas back out the intake and never fires...what did i do wrong????...thanks

Sounds like timing is way off. Don't you have to get a special made intake for those engines if you put a carb on it?

i have TBI...forgot to mention that...