Did only EFI TPI 3rd Gens, Have the electric in-tank pump? Or were some carburated Cars also equiped with such? (lower volume)
Just curious...

 

TBI cars also had an electric pump. AFAIK, all carbed engines still used the mechanical pump, but there seems to be some confusion in '86 and '87 carbed cars.

 

Vader, why is it sometimes after a swap...some people can draw through the in tank pump with a mechanical...and some cant? I couldnt...others say they could...any thoughts?

 

I was wondering the same thing when I carbed my 82 Z-28 I just pulled the fuel pump fuse and let my mechanical pump pull through my pump in the tank, and it worked just fine, but when I tried the same thing with my 89 RS it wouldn't suck any fuel at all so I had to drop my tank and remove the pump and extra line to reach the bottom of the tank.

 

here is another thread on the topic..https://www.thirdgen.org/techbb2/sho...hreadid=110323

well thats 2 89rs's that wouldnt do it...

 

ttt