I have a general question about the Prestolite dual point distributor. If you put a IBS-4017 next to a IBS-4018 what are the differences ? one is for the 340 six pack and one is for the 440 six pack. can they be interchanged ? If not why ?
The most obvious difference is that one turns one way in the engine and the other one turns the other way, so the vacuum canisters face different directions.