My 69 Cougar 351W came factory with a 4 barrel, but PO put a 2 barrel Autolite 2100 on it. I was struggling (stupidly) for a while trying to understand why my brake pedal was "so low to the floor" when suddenly I realized it's the gas pedal that is way up higher than it should be. Tracing things back, best I can tell is that if the linkage on the gas pedal was closer to the accelerator cam on the carb, my pedal should move lower to the floor.
So, does it make sense that if the PO used the 4 barrel throttle cable bracket instead of a 2 barrel bracket this would happen? Seems to me the length of the cable doesn't matter, just the position where it would be 'locked down' on the manifold. Correct? Is there a length that it should be that I could check to see if this is the issue?
I did a bit of googling but I don't even know the right terminology for what part I have to change to get the distance correct. Where do I look to get a new bracket if this is even my issue?
Secondly, it seems my kick down linkage also doesn't line up. I just had the tranny rebuilt and just now noticed that the kick down is already starting a tiny bit engaged (not long enough to be pushed all the way forward). The tranny is shifting oddly. Are there different lengths for that kick down rod for a two barrel vs. a 4 barrel? Where does one purchase a different size? Or do I crawl down there and bend the rod to make it line up better?
Thank you in advance! I've always been a bit hesitant to mess with carburetors due to my lack of knowledge.
Bonus question: if I want to put an aftermarket intake and 4 barrel carb, do I necessarily also have to change the camshaft to match? (I don't know if this is a 2 barrel motor swapped into the car or a different manifold and carb - I assume no one would "downgrade" to a 2 barrel so I think its an engine swap).