3406C conversation to B

If it was me I would convert the PEEC pump and timing advance it has to mechanical and call it a day. The PEEC timing advance has 2 set of helix teeth and will advance quicker. The 10 degree PEEC pump cams seem to work better to me than the 11 and 9.5 degree 3ZJ and 8PN that you normally find. I’d most likely leave the nozzles and pistons be hang a good windmill on it and give it a touch of fuel. I will say the way the PEEC advances work if you advance the base timing that 1/4 to 1/2 hole everyone talks about your gonna need pistons sooner rather than later

 

A 7W3906 pump could be for anything HP wise. The rack bar and governor housing will work on the PEEC pump you currently have. Nozzles match the piston pump has to match nozzles. So many mis truths to the B and C model debate. You would have to set up the govnor housing according to what you want by arrangement number which his essentially a build sheet. A pump doesn’t know what it is till you install and set the fuel and torque group. The 350 hp pistons may or may not match the 425 same as nozzles. There were a million ways to 350hp and 425 the arrangement number will tell you the way yours is. There really is no cut and dry this is 350hp stuff and that is 425 stuff. Since the nozzles pistons and crack pressure all match on what you have I would use it to convert.

base timing is pin timing

 

If you’re dead set on using the 7FB pump you need to know your pistons and see if a B model nozzle will work. I’m gonna guess 15.2 compression but from the early to the late piston design there was some changes above the top ring land. I want to say OR-3423 is the nozzle but I do not know for sure because we don’t know what piston you’re using. This pump is it a 24, 21, 18 or 16 degree pump cam 18 will work 16 be better as the slower the start closer to factory spec you are. People just think oh they are all the same and just because parts bolt up start and run doesn’t mean the same or updated version.

I need to keep my mouth shut here but ima call it. Within 2 weeks of converting we’re making threads on low power hard on fuel. I ain’t trying to be a dick just see it coming