Author Topic: holley left side fuel inlet machining (Read 23661 times)

skev · « **on:** April 12, 2015, 12:26:02 pm »

My yet to be fitted 570 avenger only has the right hand fuel inlets machined, which I understand is standard albeit stupid. It means of course if you're running a mechanical fuel pump a fuel line has to be run across the manifold from the carby to the hard fuel line running off the fuel pump. Has anyone had any experience with getting the left hand side machined to take the screw in fuel lines? It seems like the casting is all there, just needs drilling and tapping? Otherwise has anyone come up with a nice tidy solution? I was thinking about bending a new hard line with a couple of p clips to hold it.

GLENN 70 · « **Reply #1 on:** April 12, 2015, 12:49:10 pm »

Yep a pain in the butt ,think they made them for Chevy s .

barnett468 · « **Reply #2 on:** April 12, 2015, 01:00:29 pm »

Quote from: GLENN 70 on April 12, 2015, 12:49:10 pm

...think they made them for Chevy s .

stop it...

ok, you want it to look like this

you can use a ford filter in the left side . . the thread is 7/8" x 20.

https://www.google.com/search?q=ford+holley+fuel+filter+photos&tbm=isch&tbo=u&source=univ&sa=X&ei=FOEpVeH6BMOkgwSB3IGoBA&ved=0CB4QsAQ&biw=1280&bih=622#imgrc=oHeqE12VL-R5FM%253A%3BqF5EjqXuiDLADM%3Bhttp%253A%252F%252Fimage1.cougparts.com%252Fsc%252Fimages%252F1001436_1.jpg%3Bhttp%253A%252F%252Fwww2.cougarpartscatalog.com%252Fc7oz-9155-a.html%3B1028%3B688

you will need two of the fittings below for the right side.

for stock size 1/4” tube

https://www.holley.com/products/fuel_systems/carburetor_components/fittings/parts/26-28

for larger 5/16" tube

https://www.holley.com/products/fuel_systems/carburetor_components/fittings/parts/26-27

this particular tube size should be 1/4” . . check to be sure

http://www.ebay.com/itm/Transfer-Tube-Holley-Carburetor-Boss-302-428-Cobra-Jet-Mustang-Shelby-Cougar-/171731311392

5/16” tube

http://www.ebay.com/itm/HOLLEY-FORD-CHEATER-HI-FLOW-5-16-FUEL-BOWL-CROSSOVER-TUBE-302-428-429-/231023887638

you can use these and a fuel filter but they are way too much money

https://www.holley.com/products/fuel_systems/carburetor_components/carburetor_replacement_parts/parts/34-2

holley catalog

https://www.holley.com/products/fuel_systems/carburetor_components/

skev · « **Reply #3 on:** April 12, 2015, 01:31:18 pm »

That all looks like it would work great except as far as I can see the left hand inlets are not actually drilled through and threaded on my bowls. The Holley replacement bowls in the send link its not clear they're threaded. If they are they don't say so and they don't provide a bung.

skev · « **Reply #4 on:** April 12, 2015, 01:44:36 pm »

Or you are you saying I should take the primary bowl off and get the 'dummy' left hand side inlet drilled through and tapped?

barnett468 · « **Reply #5 on:** April 12, 2015, 01:45:43 pm »

.
yours is not drilled and threaded but you can do that [probably] . . the bowls i posted are drilled and threaded . . you can also buy chinese bowls or a single gold colored holley front bowl.

http://www.ebay.com/bhp/holley-float-bowl

you need a 7/8" x 20 bottoming tap but i have never tapped one.

http://www.ebay.com/itm/NORTH-AMERICAN-7-8-20-GH3-4-FLUTE-STRAIGHT-FLUTE-BOTTOM-TAP-1-PC-/361267154241?pt=LH_DefaultDomain_0&hash=item541d334d41

barnett468 · « **Reply #6 on:** April 12, 2015, 01:46:26 pm »

Quote from: skev on April 12, 2015, 01:44:36 pm

Or you are you saying I should take the primary bowl off and get the 'dummy' left hand side inlet drilled through and tapped?

yes, ya got nothin to loose . . just measure it first . . the non threaded hole should be the same size as the threaded one

also, check to see if the gasket surface area is the same.

skev · « **Reply #7 on:** April 12, 2015, 01:51:30 pm »

Actually at 50 bucks that bowl isn't a bad price.

barnett468 · « **Reply #8 on:** April 12, 2015, 01:56:10 pm »

Quote from: skev on April 12, 2015, 01:51:30 pm

Actually at 50 bucks that bowl isn't a bad price.

exactly which bowl are you referring to?

unfortunately most of these tell you what they are . . you need a dual inlet, center hung, primary float bowl.

this one should be it but it smells like a chinese bowl to me.

http://www.ebay.com/itm/Holley-QFT-AED-Aluminum-Float-Bowl-Dual-Inlets-/170662156052

heres a correct zinc gold holley one . . it is for a dominator which is the only one that will work, p/n 134-108 . . holley does not make it in shiny aluminum.

you can buy it in the land of oz from oz ebay or at the oz site below.

http://www.vpw.com.au/Category/Index/5609

https://www.holley.com/products/fuel_systems/carburetor_components/carburetor_replacement_parts/parts/134-108

skev · « **Reply #9 on:** April 12, 2015, 03:21:34 pm »

I think I should b right to tap one of the inlets. I don't have a tap bigger than half but I should be able to borrow one. Is there any advantage to tapping both or is that crossover tube quite satisfactory?

skev · « **Reply #10 on:** April 12, 2015, 03:24:08 pm »

These are the bowls that I thought looked satis

https://www.holley.com/products/fuel_systems/carburetor_components/

barnett468 · « **Reply #11 on:** April 12, 2015, 03:26:59 pm »

Quote from: skev on April 12, 2015, 03:21:34 pm

I think I should b right to tap one of the inlets. I don't have a tap bigger than half but I should be able to borrow one. Is there any advantage to tapping both or is that crossover tube quite satisfactory?

look at the other holley carb photo and this one here . . it should look exactly like these when it is done . . i have done this around two thousand zillion times.

barnett468 · « **Reply #12 on:** April 12, 2015, 03:30:01 pm »

Quote from: skev on April 12, 2015, 03:24:08 pm

These are the bowls that I thought looked satis

https://www.holley.com/products/fuel_systems/carburetor_components/

nope, never gonna happen . . none of those are drilled on both sides . . the photo for the primary is actually a photo for the secondary [rear] so it looks like it is drilled on the left side as you sit in the car but it isn't.

skev · « **Reply #13 on:** April 12, 2015, 03:31:50 pm »

Cheers, I think ill mod it as you suggest.

barnett468 · « **Reply #14 on:** April 12, 2015, 03:34:38 pm »

Quote from: skev on April 12, 2015, 03:31:50 pm

Cheers, I think ill mod it as you suggest.

it will be plumbed exactly like a factory boss 302 or 428 cobra jet then.

you need a fuel line . . i will take a look . . a boss 302 might work but you will need to bend the end that goes to the fuel pump.

barnett468 · « **Reply #15 on:** April 12, 2015, 03:42:31 pm »

.
you can have the gold holley float bowl power coated to look similar to the aluminum or you can buy the shiny chinese one i posted.

instead of using the fuel filter, you can buy a fitting like the one below if the boss 302 line wont work . . you can then make your own line or buy a 1965 fuel line and modify it . . you will need to use a tube bender.

you can use one of your existing right side fittings and install it in the hole you will tap.

can i have some cheesy poofs now?

https://www.holley.com/products/fuel_systems/carburetor_components/fuel_lines/parts/34-22

.....................................or use a short one . . it might be better.

....................

skev · « **Reply #16 on:** April 12, 2015, 04:08:17 pm »

That first one I have already fitted to my current cab, but I'm going to need to put a filter in somewhere.

barnett468 · « **Reply #17 on:** April 12, 2015, 04:21:45 pm »

Quote from: skev on April 12, 2015, 04:08:17 pm

That first one I have already fitted to my current cab, but I'm going to need to put a filter in somewhere.

i do not know what first one you are talking about.

you can buy a small clear plastic filter and put it just before the fuel pump and use fuel injection hose clamps . . i have done this around a trillion times . . do not use fuel injection hose.

..................

................................

barnett468 · « **Reply #18 on:** April 12, 2015, 04:52:14 pm »

.
in addition to the boss 302 fuel line, you can use a 65 - 66 shelby fuel line . . just bend it upwards immediately after the clamp you see on the water pump then bend it 90 degrees towards the 90 degree carb fitting i posted.

we also had a fuel line made that will work with 3310 style holley so it will work with your 90 degree fitting or the shorter one and stock fuel pump.

i would also run the 1/4" cross over line, not the 5/16".

http://johnsmustang.com/Pump-To-Carb-Gas-Line-Steel-W-Holley-66-66-Mustang

http://www.summitracing.com/parts/cst-muc1026-oe/overview/make/ford

65 shelby

GLENN 70 · « **Reply #19 on:** April 12, 2015, 07:41:32 pm »

Back in the day ,late 60s early 70s some of the ford engines with Holley carbs had the fuel inlet on the other side then with the tube from front fuel bowl to rear on the other side . Our falcon HO s had the same thing . Holleys except for those models have the std fitting same as the one you have now .

shaunp · « **Reply #20 on:** April 12, 2015, 09:29:11 pm »

Chevs have the fuel pump on the other side, maybe thats why they made them that way.

barnett468 · « **Reply #21 on:** April 13, 2015, 08:05:11 am »

.

holley never made a carb with a cross over on the left hand side of the carb as you sit in the car in the us anyway . . on chevs with factory holleys, they used 2 rear bowls from a double pumper 4150/4160 carb . . notice the left front fuel hole is not threaded.

below is the factory set up for any chev with a factory holley.

GLENN 70 · « **Reply #22 on:** April 13, 2015, 08:46:24 am »

No looking from front of car ,hard to see most carby s from inside the car .

barnett468 · « **Reply #23 on:** April 13, 2015, 09:08:07 am »

Quote from: GLENN 70 on April 13, 2015, 08:46:24 am

No looking from front of car ,hard to see most carby s from inside the car .

Not if you drive with the hood off.

With the exception of the 65 - 66 shelby's, all fords and chevys with factory holleys had the cross over on the left as you look at them from the front.

The fords had the inlet line on the right and chevs had them on the left.

I posted a photo of a factory ford holley with the fuel lines earlier for everyone's viewing pleasure.

Hey barn...if you really wanted to post photos for everyone's viewing pleasure, why didn't you post some of Kate Upton.

GLENN 70 · « **Reply #24 on:** April 13, 2015, 09:11:11 am »

We had that fuel line on our GTHO falcons .IF YOU KNOW WHAT THEY ARE .

holley left side fuel inlet machining

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Author Topic: holley left side fuel inlet machining (Read 23661 times)