Carb guru's...step inside please
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Carb guru's...step inside please
I was changing the spring in my vacuum secondary carb, to try and eliminate a bog. Anyways, I tore the vac secondary diaphragm and need to replace it. Holley sells 4 different sizes. Anyone knew the correct one?
The carb is the factory 4bbl carb on my 86 F250 351w. I believe the carb to be a 4180c. The list number on the carb is 50264-1.
Thanks
The carb is the factory 4bbl carb on my 86 F250 351w. I believe the carb to be a 4180c. The list number on the carb is 50264-1.
Thanks
Moderator
Joined: Jan 2001
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From: Virginia
Did you know the aircleaner will affect how the secondaries open on a Holley? A restrictive air filter/cleaner assembly will make them open faster, and a more open filter system will make the secondaries open more slowly. Do a test run without the aircleaner and you will see what I mean.
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Ok, the correct Holley part number is 135-4. It is the same as the Holley 1850 carb, just like Old Hickory said.
O'Reilly's had one is stock. The carb is back on the truck. All is good. Still have a slight delay/hesitation . But it's much better.
pedant
Joined: Jan 2008
Posts: 23,576
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From: EXTREME southwest CT
if it's just off idle it could be the accelerator pump adjustment.
If 2000 rpm or so, you could try a heavier spring.
Holley #20-13 kit:
http://www.holley.com/data/Products/...199R8219-2.pdf
If 2000 rpm or so, you could try a heavier spring.
Holley #20-13 kit:
http://www.holley.com/data/Products/...199R8219-2.pdf
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