Originally Posted by xntrik
additional FYI in case anybody cares.....
the 58 Mercury had a 383 MEL Turnpike Cruiser that had a 500 cfm Motorcraft 2 bbl. that I specifically remember because we took a new 64 Fairlane 260 and put that carb on it and it dropped 1 full sec in the quarter. The 500 cfm was so big we had to have a machine shop mill out the throttle bores to install the carb. It bolted right on and looked just like the stock carb on the 64 and I swapped ID tag to the new carb... and tech inspection never caught it. The only car that ever beat us was a silver blue 62 Impala 2 dr ht
with 283 four speed. Oswego Raceway, Aurora IL, 1964
this series ford engine had combustion chambers in the cylenders, a flat head same as 348 409 gm.the top of the block was on a angle to the bore a perfect wedge, like the 348s it was costly to build and to rebuild required some spesial tooling to bore the cyls.