Carb'd L69 to Holley Double Pumper, In Tank Fuel Pump
 

Hey guys, so like the title says I have a CCC L69 305 engine that's going to become a 350 with a Holley Double Pumper. Question is, what do I do with the in tank fuel pump? I'm ditching the ECM, but I'm not sure if the ECM controls the fuel pump, or if I can leave it. The new motor will also have a mechanical pump on the block.

Not too sure if I'm in the right spot, I'll probably post this in engine swap as well.

I can't come up with any diagrams at the moment, but if I recall correctly, the electric pump is turned on initially by a timed relay that primes the system, then by an oil pressure switch to keep the pump on when the engine is running. So, shouldn't be a problem going to a non-computer system.

Re: Carb'd L69 to Holley Double Pumper, In Tank Fuel Pump
 

This is the general consensus from everything I've heard. The main reason I was wondering was because I'm doing a rear end swap this weekend, and I figured if I had the rear end out it would make sense to do this in one fell swoop.

But, I think I'm going to go with everyone else and hope I don't have to. Not like pulling the rear is difficult if I have to again.

Re: Carb'd L69 to Holley Double Pumper, In Tank Fuel Pump
 

Well you don't have to pull the rear end out to drop the tank. The hardest part is just breaking the bolts free for the first time on the rear. :D