Does anyone know if an 83 Crossfire intank fuel pump will hook up to an 86 fuel sending unit?

I'm considering switching from TPI to Carb, and am already aware of the Mallory #4309 after reading about many swaps that took place on these boards.

The folks over at Jegs recommended to run a 3/8's line over the stock 5/16's return line from the AFPR to the tank, to avoid leakage (this if I maintain the stock TPI electric pump).

Although it's a good idea, I'd much rather keep the stock fuel lines functional. I read on these boards that a stock Crossfire electric pump only puts out about 15-25 psi (over the TPI's 50-60 psi), and was curious to see if anyone every adapted one to their TPI's fuel sending unit. This should eliminate too much pressure, plus keep the Carb happy (through the AFPR of course).

I have access to my tank via a trap door, so the install will be relatively easy. Has anyone here ever done this?

ANY feedback would be appreciated.

 

Does the Crossfire fuel pump mount in the tank? If I was going to go through the hassle of dropping the tank (which I have), I would go ahead and use the early 3rd gen carb pick-up. Then you would have the option of running a mechanical fuel pump or an exterior electrical unit. The sender would work with your existing set-up for sure then. Just one opinion.

Sometimes we just feel like we have to use a part just because we have it and the trouble isn't worth it. Been there.

 

I'm 'pretty' sure (not completely though) that all third gen. cars came with the same fuel sender unit, but just differed with the actual pump itself. The main differences being the wiring (two for the mechanical, and three for the electric).

I just took out my stock sender with the electric pump in tact this morning, and gave Pep Boys a call. They have three Crossfire intank pumps in stock for $55.00....

I'm curious, so I'm going to bring my stocker with me, then match them up. If it will attatch with no prob, then I'll go for it... if not, I'll have to hit the bone yard.

Thanks for the reply!!

 

The Crossfire pump will mount in the TPI sending unit just fine. The electrical connections are different though. On the CFI you need ring connectors and there are two screws that secure the ring connectors to the pump.

I will add that those pumps aren't that great, but I understand your mission.

 

Thanks Tom!!

Would you know if these ring connectors come with the purchase of a new pump, or will I have to purchase seperately from GM (I just now asked a clerk over at Pep Boys, but of course he had no idea what I was talking about)...

Thanks again

 

I don't know if the ring connectors come with the pump. Sorry. But you CAN buy those at Pep Boy's and they should definitely know what a ring connector is! (lol) We can hope anyway.

 

i changed my crossfire out with a newer tpi pump. yes they do have different connectors. But at the same time i was switching tanks. I went to a junkyard and got a tank and sender unit for $20.00. I just cut the connectors and switched them. easy as pie.
The TPI unit uses a plug style connector. The crossfire uses a screw type connector. It might be a little harder to find the connectors for a crossfire than finding the connectors for a TPI since crossfire hasnt been used since 83. If you cant find the connectors at Pepboys try your luck at the junkyard to find an 82 or 83 crossfire camaro. Goodluck.

 

you don't have to have a 3/8 return line. just a recommendation. it'll work with the 5/16.

 

Yeah, you know.... that's what I was telling myself before I spoke to the technical department (who honestly got me worried over nothing).

I'm saying to myself, either if you're running TPI, TBI or a Carb.... the 305 combustion chambers do not change (it's still only a 305), the main difference being the sequential injectors which need a higher psi. Not that the engine 'uses' 60 psi all at once, but just so the injectors are properly fed.... the rest obviously being dumped back into the return line.....

I feel that when I ran the TPI.... it sent just as much fuel back to the tank, as the Carb is doing now with the same intank pump (because again, even though it's a TPI over a Carb.... this does't mean that the 305 is using the extra fuel, it's just that the injectors are being well supplied)....

I definitely agree with you, but I still installed the CFI pump just for the heck of it anyways (mainly for peace of mind). So far so good.

 

any updates?