i don't know if this should be here or the engine swap board, but i figured i would try it here, and if it gets moved, then whatever. anyhow. my car is an 89 rally sport orignally equipped with a 2.8 liter v6. over the past several months, i have put together quite the little 305. my question is, is the fuel lines any bigger or smaller from the 2.8 cars and the v8 cars? and if so, would it be easier to run braided line the entire length of the car, or get the hardlines out of a v8 donor? next, can i keep the intank fuel pump in the car without inhibiting flow if i run a mechanical fuel pump up front. and lastly, the fuel filter on the car is the original one, i believe. it has not moved under it's own power in 10months, is it possible that the fuel could have messed the filter up by staying stagnent in the lines. (the fuel smells right, but is kinda dark yellow in color, looks kinda like pee.) basically, i am not getting enough fuel to the motor. it will run ok for a little while, but when i get on it, it goes to about 3500, then dies (completely shuts off.)

specs on the hoss 305:
305 block bored .030
federal mogel(can't spell, it's late) hyper pistons 9.5:1
ohio crankshaft 4340 connecting rods
turned stock crank
fresh 416 castings
crane blue racer double roller timing chain
crane blue racer cam .442"i/.465"e 214*/224*
crane energizer aluminum roller rockers
holley 4160 dual feed 600 vacuum secondary
torker II intake (i know, they suck, i am getting a holley street dominator next week)
in cap HEI from a 79 monza with an accel supercoil and advance springs
computer delete
all blowing through a set of heddman longtubes, true dual exhaust with moroso spiral mufflers.

any and all help appreciated.

 

for the cost of braided line from one end to the other you could buy another car. run hard lines and use braided for the flex connections. i doubt but don't know that the lines are any differant from v6 to v8 cars

 

were did u run your coolent lines?

 

what are you talking about man?

 

i don't think they are any different. i am trying to figure out why i don't have enoug fuel going to the carb. i plugged the return line, and that helped a bit, but still not enough fuel. i think that the fuel filter is clogged, iam goin to buy another one of those here in a couple of minutes. i am just trying to factor everything else out. know what i mean?

 

fuel filter didn't fix my problem. i still am not getting enough fuel to the carb. i have a holley blue pump, should i throw that on and do away with the mechanical one? or maybe the fuel pump is bad? does having the intank pump still installed prohibit proper flow?

 

i ran braided line for 1/2 the length of the car

yes it was very expensive

did not change the fuel pump nor the hardlines

i used a mallory 3 port regulator

my carb is fed fine with this setup

 

I've got the same problem and I posted a question similar to yours a while ago. I didn't seem to get a straight answer either. The most I got was I was told I would need to get a fuel pickup from a carbureted car and that the existing in tank pump will screw things up. So I'm just as lost as you

 

You're asking a pump that's up at the engine to suck fuel through a pump in the tank that isn't helping the process. This pump on the engine was designed to suck fuel from the tank through an unrestricted line.

Oh, you also have a filter on the inlet side. Filters are typically on the outlet (read: pressurized) side of a pump (fuel pickup screen doesn't count as a filter).

Either get that in-tank operating (in which case you'll need a reg and use the return line), or get the pump out of the tank. If you take out the in-tank, take out the EFI filter, too.

Personally, I think a pusher pump in the tank with a regulated mechanical at the engine with a return line is the ideal set-up for a carb. But, that's just my opinion. I'm not having any problems with a Carter mechanical with 3/8" pickup line feeding a 400 HP engine.

 

ok, here is what i have done so far. i pulled the tank down and pulled out the old pump. i took a piece of 3/8" line and a compression fitting and extended the pickup to the length it was with the pump in it. that problem is fixed. i still have the fuel filter in line. do you think it will be too hard for the pump to pull through the filter? i plan to put some 3/8" hardline in the place of the filter with some compression fittings on wednesday unless you guys suggest other wise. i have not had the opportunity to start the car since i got the tank back in. figured i would update ya'll anyhow. thanks for the help so far. if i have the opportunity, i may try to start the car tomorrow, but i doubt it.