The Ford Barn

marko39 · 11-02-2018, 07:24 AM

i have an older offy 4 bbl. intake manifold for the 8ba series and i see that it has holes for 12 bolts but stock man. and block uses 14 bolts. seems strange, was that the way they were all made and are the new ones right? any ideas why they were made this way? Mark

51 MERC-CT · 11-02-2018, 08:15 AM

No idea why the 'extra?' holes but don't over think it, use whatever holes that are available to use, as many others have.
For example my stock 8CM manifold uses just 13 of the 14 in the block.
Most likely all the 8BA type blocks had 14 holes installed and the type of manifold installed determined how many of those were used.

19Fordy · 11-02-2018, 09:01 AM

I am using the same OFFY intake manifold on my 8BA. No bolt problems. But, BE AWARE that the OFFY intake offsets the generator and fan pulley 7/8" towards the drivers side. Read here:
https://www.fordbarn.com/forum/showt...nerator+offset

RalphM · 11-02-2018, 03:34 PM

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Yep, I have an Edelbrock manifold on an 8BA block and it has holes in it that the Block doesn’t have. So I just put fake bolts IN there with acorn covers.

11-02-2018, 07:24 AM	#1
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,040	offy 4bbl. intake question i have an older offy 4 bbl. intake manifold for the 8ba series and i see that it has holes for 12 bolts but stock man. and block uses 14 bolts. seems strange, was that the way they were all made and are the new ones right? any ideas why they were made this way? Mark

11-02-2018, 08:15 AM	#2
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: offy 4bbl. intake question No idea why the 'extra?' holes but don't over think it, use whatever holes that are available to use, as many others have. For example my stock 8CM manifold uses just 13 of the 14 in the block. Most likely all the 8BA type blocks had 14 holes installed and the type of manifold installed determined how many of those were used. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES Last edited by 51 MERC-CT; 11-02-2018 at 08:41 AM.

11-02-2018, 09:01 AM	#3
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: offy 4bbl. intake question I am using the same OFFY intake manifold on my 8BA. No bolt problems. But, BE AWARE that the OFFY intake offsets the generator and fan pulley 7/8" towards the drivers side. Read here: https://www.fordbarn.com/forum/showt...nerator+offset

11-02-2018, 03:34 PM	#4
RalphM Senior Member Join Date: Nov 2015 Location: North Pole, Alaska Posts: 2,651	Re: offy 4bbl. intake question Sponsored Links (Register now to hide all advertisements) Yep, I have an Edelbrock manifold on an 8BA block and it has holes in it that the Block doesn’t have. So I just put fake bolts IN there with acorn covers.