Originally posted by spdsk8r:
In 1970, I bought a new 340 Duster off the showroom floor. Couldn't figure out why it was so much faster than other 340 Dusters until two years later when I put a 440 in it. My Duster had the 340 sixpack (from the AAR Cuda) motor with a 4 barrel intake and carb on it.
That is interesting. Aside from the intake and 3 carbs, was there really that much difference in the two 340's? The heads were different but really only as far as valve angle. The valves were the same size AFAIK. Not sure about compression ratio but if it was different, it wasn't much. Maybe rear end ratio had something to do with it being quicker (faster?). I'd sure like to find a six pack motor for my Cuda. 
Karl
*** It's all about consistency! ***
*** Previously 88SVT ***
06 F150 Supercrew 5.4L FX4
98 SVT Contour #4362 Born 1/6/1998
86 Ranger GT (For Sale)
69 Fiat 850 Sport Spider (For Sale)
67 Formula-S Barracuda
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