VP44 - P7100 conversion
#13
FUEL SYSTEMS, INJECTION PUMPS, P7100, SIGMA, VP44, HOTROD PUMP, FUEL TUBES, 12V, - Haisley Machine
#14
Hi this is my first post here! Anyway I just got done with my p-pump conversion yesterday. it was a little time consuming but it was a fairly simple job. I was able to complete it in around 20 hours. The easiest way is to find a 12 valve truck for parts and it is pretty much just a bolt on deal. There are a few mods you have to make like relocating the computer and grinding the head a little to clear the oil supply to the pump but other than that is was pretty much just bolt on. I'm very happy with the way it runs and it should be awesome once i spend some time tuning the pump. If you look around and find parts cheap you should be able to do the job for under $2000 including lines. Anyway just figured I'd put in my .02 worth.
#16
it should swap over but you will need a 24v cam the 12v cam and 24v cam have different thickneses and if you run the 12v can you will reduce your lift. and therefore will need an electric lift pump at least that is what i have heard. and you can run 24v injectors that are still set up for a vp44 it will just run better set up for a p pump
#17
you cant just put a 24v head on a 12v block and call it good, there are entirely different pistons, belive me i already tried it when i rebuild my engine this winter