its a two b carb wich i know is a 318 set up but under the hood it say 5.9 so is thare some way to tell by the block or some thing[:@]

 

o and this truck has seen a few rednecks before the one that has it now lol so just cuz it has a two b carb and intake dont mean that it a 318 lol

 

On the drivers side of the block it is cast infront of the starter.

 

or post a couple pics

 

FROM THE FRONT OF THE TRUCK LOOKING TOWARDS THE ENGINE .LOOK ON THE DRVIER SIDE FRONT OFF THE ENGINE JUST UNDER WHERE THE CYLINDER HEAD SURFACE MEETS THE BLOCK...IF YOU STILL HAVE A SMOG PUMP(IF YOU EVEN KNOW WHAT YOU ARE LOOKING AT) THEN GET UNDER THE TRUCK AND LOOK ON THE SIDES OFF THE BLOCK YOU WILL SEE A LONG NUMBER WITH A DASH AND EITHER A 318 OR 360 OR LOOK AT YOUR HARMONIC BALANCER IF ITS THIN ( 1') THAN IT'S A 318 ....IF IT'S THICK (2' OR SO ) ITS A 360... PROVIDED YOU KNOW WHAT YOUR LOOKING AT THE LAST METHOD IS ALMOST 90% CORRECT ALL THE TIME.....