[brian1987]

if i put a carbureted engine in my truck with a turbo 400 transmission, i know i need to move the crossmember and get a new drive shaft but does it matter how long the tail shaft is also how hard is it to move the crossmember? it is going into a 1991 c1500 with the tbi 4.3l will i need to change the fuel pump?

 

[brian1987]

anyone?

 

[jebx]

Either you have to have the right tailshaft or get a custom driveshaft made. Moving crossmember shouldn't be too hard, just need to drill some new holes.

 

[brodystruck]

If you are talking about going to a carb'd SBC, then changing the fuel pump is optional but recommended. You can keep your current fuel pump and run a return style FPR (Mallory makes a real nice one). This is becuase a carb doesn't want all the FP that the TBI system needs. You could also change to a mechanical pump on the block (which won't need a AFPR) or spend some money on a nice electric fuel pump/FPR combo.

 

[Rednecked_4x4]

id suggest goin to a mechanical pump on the block,,, but thats just me.