Holley linkage and fittings?

J

jaguar6165

Senior Member
Just got my holley in and was wondering how to hook up the choke linkage and what fittings to use for the fuel lines? I know there a quiet a few people out there running holleys, what are you using? Any pics would be great.
 
Which Holley are you using? I really doubt you will need a choke. Just leave the choke plate in the open position. A couple of throttle pumps (only-it will flood) will give you plenty of gas and a rich mixture for starting when cold, though you will have to feather the throttle to keep it going for a few minutes until the manifold warms up. I have dual 92's with the low pressure Napa fuel pump in the frame box, with a short flexible gas line hose connected to 1/4" steel tubing that runs up the firewall connected with hose to a Speedway dual carb split line feed. The pressure is right and the 1/4" line provides plenty of fuel at high RPMs at hillclimbs. If you have one carb, you could connect the steel feed line direct to the carb with the right fittings, whether from the tank direct or the fuel pump. Make it long enough to accept vibration. You would have to flare the steel line and use fittings that accept the flare. It is easier to hook up with the flex hose at the ends and that eliminates vibration as a concern although it does not look as cool. Or you could use a flex gas hose direct from the tank. Lots of guys operate single carbs without a fuel pump. Give it a try and see if it works for you. I would not use hose from a low mounted pump because it gets sort of close to the manifolds. Do not use copper tubing if you make direct metal to metal connections. Sorry, Jag, I dont know how to do pics despite the instructions recently given. Good luck.
 
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Thanks for all the info unfortunately my car is in the body shop or I'd be in the garage right now. When i get it back I think i will try to run a flex line and leave it gravity fed to see how that works out.
 
Yeah I think the biggest "hill" is an on ramp to the highway that I use very little. If I have problems I can always get a pump but I figured it I keep enough gas in the tank it should be ok.
 
PC/SR said:
Which Holley are you using? I really doubt you will need a choke. Just leave the choke plate in the open position. A couple of throttle pumps (only-it will flood) will give you plenty of gas and a rich mixture for starting when cold, though you will have to feather the throttle to keep it going for a few minutes until the manifold warms up. I have dual 92's with the low pressure Napa fuel pump in the frame box, with a short flexible gas line hose connected to 1/4" steel tubing that runs up the firewall connected with hose to a Speedway dual carb split line feed. The pressure is right and the 1/4" line provides plenty of fuel at high RPMs at hillclimbs. If you have one carb, you could connect the steel feed line direct to the carb with the right fittings, whether from the tank direct or the fuel pump. Make it long enough to accept vibration. You would have to flare the steel line and use fittings that accept the flare. It is easier to hook up with the flex hose at the ends and that eliminates vibration as a concern although it does not look as cool. Or you could use a flex gas hose direct from the tank. Lots of guys operate single carbs without a fuel pump. Give it a try and see if it works for you. I would not use hose from a low mounted pump because it gets sort of close to the manifolds. Do not use copper tubing if you make direct metal to metal connections. Sorry, Jag, I dont know how to do pics despite the instructions recently given. Good luck.
Click to expand...

Will 5/16 line be to big? Can't seem to find any 1/4" with a thread that will fit the holley, but found a 5/16" that will.
 
That would be fine. If running directly from the tank there is no pressure except gravity and bigger than 1/4" is probably better. The size of the feed line is not critical.The float will regulate how much gas gets into the carb. Better to worry about it being to small and restricting flow. You could go bigger yet if the engine stumbles at high rpm, but I think 5/16 will work. Give it a few seconds after you turn on the fuel tank valve to fill the carb. I dont know personally, but I have heard that you can take a fair sized hill or run the tank pretty low direct from the tank. As noted, no worries in FL.
 
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