4.3 to 6.0 swap, fuel pump?
 

So I impulse bought a LQ4/4L80 combo for my 2000 RCSB :sigh:, now looking in to a few of the finer details on what else is needed. I've purchased the frame mounts, will get the motor mounts next and buying the tubular crossmember from dirt track racer on here. I know there a few more to get from looking at other threads. Only thing I haven't really seen, and it probably just that I missed it is about the fuel pump. Will the v6 pump work with the stock 6.0?

Stock V6 fuel pump delivers enough fuel for my LQ9 with cam, headers and 50lb/hr injectors. WOT up to 6400 RPM reads 12.3 on the wideband with no issues. Speed Engineering has those cross members for the 80 powder coated in red or black at a reasonable price.

Whenever we did my swap, the 2007 Classic V6 had the same size pump as the V8. I believe we even checked the part numbers.

I work with a guy who 5.3 swapped his 2.2 S10, and at 229k on the 2.2 pump, its still providing enough fuel for the stock 5.3

Maybe its a bastard pump, but it sure ate its spinach