FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: turbohunter on May 11, 2013, 06:12:10 PM
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Hi Guys
Ran into something I know nothing about.
BK and BJ carbs.
I've done a little research but can't find anything in depth yet.
Will someone shoot me a link or recommend a book or anything.
Wouldn't mind one of you talking about them IF you feel like typing.
I'm in sponge mode.
Thanks in advance.
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I'm not sure what you know about those carbs but I'll share what I know! LOL
C3AE-9510-BJ Holley list 2804 (rear carb), C3AE-9510-BK Holley list 2805 (front Carb), No Choke butterfly, 600cfm
matching carb, used on 63 1/2 - 65 427 Ford/Mercury, 67 428 Shelby GT-500. 4160 Series
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That's new info BJ rear BK front.
No choke.
Was there any special metering.
What cfm were they.
Why are they so special/expensive to buy?
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The carbs have a different metering that the std small Holley 600s. Here are some detailed specs.
http://www.network54.com/Forum/74182/thread/1162924197/BJ-BK+carb+Specifications
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That info should be in the holley books. Everyone seems to think there`s some voodoo to those carbs. If you read down the replys you`ll see my signature stating that a Holley tech told me they were the same yrs before. Chipmechanic confirmed what the tech told me. I run a set of 1850-2s on my 63 427 galaxie and it has excellent street manners. I`m running repoped BJ-BKs on my 427 powered 56 F100 and there is a slight difference in manners, the truck has a bigger factory cam than the car. If for some reason you want to run 1850s use -1,-2,-3, The latter ones have been changed, and don`t respond as nicely as the older ones.
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That's new info BJ rear BK front.
No choke.
Was there any special metering.
What cfm were they.
Why are they so special/expensive to buy?
Like I posted 600CFM. The metering blocks are 4033. Why are they so expensive.... Those are Factory Carbs and what they go to.
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As near as I can tell the real big difference is the postion
of the trunnion on the throttle shaft.
BK upper
BJ lower, it's about 5/8" lower.
And that hole that Mike measured.
(http://i135.photobucket.com/albums/q128/ScotiaFE/C3AF-9510-BJ_03_zps7fc8c642.jpg) (http://s135.photobucket.com/user/ScotiaFE/media/C3AF-9510-BJ_03_zps7fc8c642.jpg.html)
(http://i135.photobucket.com/albums/q128/ScotiaFE/C3AF-9510-BK_07_zpsbb188185.jpg) (http://s135.photobucket.com/user/ScotiaFE/media/C3AF-9510-BK_07_zpsbb188185.jpg.html)
Disclaimer: those are not my carbs, I lifted the pics from the spider web.
These carbs have the throttle shafts in the wrong carbs.
You can find these pictures at
http://mustangtek.com/4160/holley4160.html
My carbs are old and crusty. Like me.
Heres a pretty good TSB on them.
http://www.427galaxieregistry.com/1964tsb.html
More disclaimer. lol
Even the TSB has some errors. ::)
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Very cool stuff
Thank you gents
I've been studying multi carbs lately as I just purchased a tri power for my Tbird rebuild coming up.
Appreciate your time.
BTW The TSB was a key to a whole new info stream. Thanks Howie.
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Do you have the T-Bird specific 3x2 intake? It's different from the Galaxie 3x2 intake, which will not allow the hood to close because the carb bases are slanted, Rod.
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Do you have the T-Bird specific 3x2 intake?
Yes I do.
Thank you