After just putting a set of 48IDF's on my 331, a couple of other bits of info...
First, plan on running a mechanical advance dizzy. The only way to run a vacuum advance
dizzy is with a lot of elaborate plumbing under the manifold. Also, forget power brakes
for the same reason...
The 48IDF setups I've seen show them with a small bracket to mount the bellcrank outboard
of the carbs. Unfortunately, NOBODY MAKES THE DAMN THING! You pretty much have
to have a bracket custom made to mount the bellcrank - cost me $100 but he saved the
dimensions in case someone wants another one. Also, whomever designed the manifold should
have actually tried it on a real motor... as is, you can't go to WOT because the accelerator pumps
will hit your valve covers. a BFH took care of that problem, but talk about a piss-poor design.
Tuning - I got them close but it still wasn't quite right. My friend came over, he's had IDA's on
his 427 GT-500 for 20 years... in 10 minutes, he had the car idling perfectly. I've only driven the
car once at an auto-x but the throttle response was unbelievable...
Now I have a new problem... Kumho 710 315's on the back ain't big enough
