C2 340HP Manifold

[Chris D.]

Re: C2 340HP Manifold

Richard,
Bob makes a good point, unmodified the AFB does not fit the 64 holly manifold. Your manifold number does end in '129, yes? Then general thought is your drill and tap machining is a post production alteration. Can't imagine why anyone would do that before you acquired the car in '65. What is plugging the port now?
Chris

[Edward J.]

Re: C2 340HP Manifold

I believe I remember reading some info on the boss on intake in Nolan book. It came 3 ways, without the pad, and with a pad, and with a plug. I am thinking the plugged version was a over the counter but not sure, you would need someone to post with the plugged version to narrow down when if this happened.

[Darryl D.]

Re: C2 340HP Manifold

Richard,
Bob makes a good point, unmodified the AFB does not fit the 64 holly manifold. Your manifold number does end in '129, yes? Then general thought is your drill and tap machining is a post production alteration. Can't imagine why anyone would do that before you acquired the car in '65. What is plugging the port now?
Chris

I agree. I was looking for a 1962 or 63 340 horse intake To put on my 1965 so I could use my existing original 300 h.p. Carb while upgrading my car to 350 h.p. but have decided against it. The point here being that a Holley will NOT fit these manifolds. A 1962 intake will have no reason to have that port as the only reason for it would be for power brakes that were not available. Possibly someone may have done this to your intake in the past for use on a 1963 car equipped with power brakes.

[Richard S.]

Re: C2 340HP Manifold

Hello Chris
Yes, as mentioned it is the correct carb and manifold. A later post regarding the 62 340 HP car took care of a question I had regarding the taped hole. The car was two years old when I bought it with one owner before me. Not sure why I never paid attention to this hole before since I have had the manifold off and on the car on a number of occasions. There is a bolt in the hole. I was getting ready to remove the manifold and valve covers to have them cleaned when the bolt just caught my eye. I guess I paid to much attention to my old 54 vett and ignored this car over the years.
Anyway thanks Chris for all the feedback. I guess I will never know the reason for the taped hole it is lost in time.

Rich S

[Richard S.]

Re: C2 340HP Manifold

Thanks for that feedback Ed
Rich

[Joe L.]

Re: C2 340HP Manifold

Hello Chris
Yes, as mentioned it is the correct carb and manifold. A later post regarding the 62 340 HP car took care of a question I had regarding the taped hole. The car was two years old when I bought it with one owner before me. Not sure why I never paid attention to this hole before since I have had the manifold off and on the car on a number of occasions. There is a bolt in the hole. I was getting ready to remove the manifold and valve covers to have them cleaned when the bolt just caught my eye. I guess I paid to much attention to my old 54 vett and ignored this car over the years.
Anyway thanks Chris for all the feedback. I guess I will never know the reason for the taped hole it is lost in time.

Rich S

Rich------


If it's actually a bolt in the tapping, that's definitely not factory. There's no way the factory would have installed a bolt. If the boss on the manifold is tapped for machine thread, that's not factory, either. The boss. if tapped, should be tapped for national pipe thread (NPT) and, if plugged, should be plugged with a pipe plug, most likely external or internal square drive.

[Chris D.]

[Darryl D.]

Re: C2 340HP Manifold

Why add a vacuum fitting port during 63 run that had no use?

As I said earlier, where did the vacuum come from for a 1963 with power brakes.

Your manifold may have been dealer replaced in 1963 for what ever reason.

[Chris D.]

Re: C2 340HP Manifold

Vacuum port for carbureted 63s was in the carb base plate. Both AFB and WCFB. No manifold connection necessary.

[Darryl D.]

Re: C2 340HP Manifold

Vacuum port for carbureted 63s was in the carb base plate. Both AFB and WCFB. No manifold connection necessary.

OK, that blows that theory.