Author Topic: Holley 12-833 fuel pump question  (Read 105 times)

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Offline ablue69

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Holley 12-833 fuel pump question
« on: March 26, 2020, 10:03:46 am »
Had this 289 w Holley fuel pump laying around for a while.  With my extra spare time I'm trying to fire it up on an engine test stand.  Problem is I can't find a simple connector to rubber fuel line.  A call to Holley said I needed 1/4NPT to 3/8" nipple, but when they arrived they are too small.  Called Holley back and said maybe my 12-833 is an older version because they didn't fit.  He said "sorry, that's what it has to be". 

Anybody know what I need?

Picture of my 12-833 Holley -


Current 12-833 looks like this -
https://www.holley.com/products/fuel_systems/fuel_pumps_regulators_and_filters/fuel_pumps/carbureted_fuel_pumps/carbureted_mechanical_pumps/parts/12-833
'64 1/2 Convertible (SOLD)
'64 1/2 hardtop
'66 Bronco, 5.0 fuel injected, restomod
'67 Mustang Junior!
'68 Bronco Half Cab
'69 BOSS 302  9F02G196425 (SOLD)
'74 Bronco 302 auto
'89 Saleen (bought new, never modified!)
'96 Bronco XLT
'08 F350 Lariat Crew Cab dually
'16 T350 Transit Cargo Van dually

Norm

Offline AlexM

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Re: Holley 12-833 fuel pump question
« Reply #1 on: March 26, 2020, 01:07:28 pm »
It's amazing all the weird projects that bubble up while Sheltering in Place!  :)
Don't you have a coffee can full of weird fittings you can pour out on the work bench and see what threads in?   ;D
Or use a thread gauge from a tap and die set and see if it's pipe thread, plus the diameter, like 0.675" and 18 threads/in for 3/8" pipe etc. Worse case, take it off and go to the hardware store and touch all their fittings and see what screws in. Wash you hands when done!  :P
--Alex
1969 Mach 1
1970 BOSS 302 0F02G120146
1970 BOSS 302 0F02G119233 W code
1969 BOSS 302 9F02G196425
1969 BOSS 429 9F02Z198888 KK 1982

Offline ablue69

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Re: Holley 12-833 fuel pump question
« Reply #2 on: March 26, 2020, 03:35:27 pm »
Hey Alex!  Yeah, I first dumped my coffee can full of misc. stuff out and I did find a brass fitting that seems to screw into the pump.  About 5/8" I believe, but other end wasn't right.  So I jump in the car with the brass piece, the Earl's fittings the Holley guy said I needed and ran down to our NAPA store.   I was sure I was going to be able to piece something together.  Pull in front and big sign on the door says "Call and we will bring your parts out to your car or deliver to your shop".  I sat there trying to decide if it was worth it to call them, knowing they probably didn't really want to come outside, or just go back home.  It's really weird out there these days! ::)  So I came home and ask you guys! ;D  Still can't believe the Holley guys couldn't give me a definitive answer about their own product. :(  I'll figure it out, just may have to wait till human contact is allowed again! ;D ;D ;D
'64 1/2 Convertible (SOLD)
'64 1/2 hardtop
'66 Bronco, 5.0 fuel injected, restomod
'67 Mustang Junior!
'68 Bronco Half Cab
'69 BOSS 302  9F02G196425 (SOLD)
'74 Bronco 302 auto
'89 Saleen (bought new, never modified!)
'96 Bronco XLT
'08 F350 Lariat Crew Cab dually
'16 T350 Transit Cargo Van dually

Norm

Offline ablue69

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Re: Holley 12-833 fuel pump question
« Reply #3 on: March 26, 2020, 07:17:23 pm »
Took your advice Alex and went back out to the garage to rummage around some more.  And was able to find one that would work...but I needed both inlet and outlet. 


So next I looked through a box of stock pumps, found and mounted one of those.


By the way here is what Holley said I needed on the right, compared to what actually fit on the left!


Norm
'64 1/2 Convertible (SOLD)
'64 1/2 hardtop
'66 Bronco, 5.0 fuel injected, restomod
'67 Mustang Junior!
'68 Bronco Half Cab
'69 BOSS 302  9F02G196425 (SOLD)
'74 Bronco 302 auto
'89 Saleen (bought new, never modified!)
'96 Bronco XLT
'08 F350 Lariat Crew Cab dually
'16 T350 Transit Cargo Van dually

Norm

Offline IH8GM

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Re: Holley 12-833 fuel pump question
« Reply #4 on: March 26, 2020, 10:07:56 pm »
3/8 NPT  - precision guesswork
"DRIVE IT LIKE IT OWES YOU MONEY!"

Offline ablue69

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Re: Holley 12-833 fuel pump question
« Reply #5 on: March 27, 2020, 05:29:27 am »
Thanks.

"precision guesswork"   That's pretty much how I figure everything out! ;D
'64 1/2 Convertible (SOLD)
'64 1/2 hardtop
'66 Bronco, 5.0 fuel injected, restomod
'67 Mustang Junior!
'68 Bronco Half Cab
'69 BOSS 302  9F02G196425 (SOLD)
'74 Bronco 302 auto
'89 Saleen (bought new, never modified!)
'96 Bronco XLT
'08 F350 Lariat Crew Cab dually
'16 T350 Transit Cargo Van dually

Norm