I am currently working on a 90 rs. we ripped the 305 tbi motor out and put in a carbed 70 350. now how do we get fuel to this thing. can we keep the in tank pump or have to convert to mechanical pump.

 

i believe you can keep it

 

The stock intank pump will work fine. You will need a pressure regulator though.

 

I've been running my carbed 350 on the stock TBI pump for about 6 years now. In fact, the fuel pump is about the only thing in the car that hasn't been upgraded yet. I've been waiting for it to go out before I pull the tank. You'll need a return-style regulator to make it work. I just used a Holley 3-port regulator and plumbed one of the outlets through an orifice fitting to the stock return line. I've seen a couple guys use returnless regulators, and it works, but it's harder on the fuel pump. Maybe that's why mine's lasted so long...it has like 200K miles on it now.