215 pumps pull timing as rack travel increases due to the retard notches on the plungers, up to 3* can be pulled with the factory rack pulg with the mack plug its about 4* at full rack. The rest of the automotive ppumps use flat top plungers so timing is not effected as rack travel increases.

For the mack plug it will add fuel to all the p7100's over the factory pulg including the 215 pump

Good info!!! Thanks for the video too!!

Oh, Hell yeah , Someone with a ton of time on thier hands and armed with a brain ..

Thanks 94 !!! :tu:

Thanks For All Of The Info guys! It helps a lot!

Now I'm thinking .. maybe i can grab some more power and fun outta my truck ....

How many ponies do you guys think that a NV5600 Would hold fairly safely?

Dunno if there is an exact # that they pop at ?? :humm:

Any guesses? 600, 700?

I would say conservitivly 600 -650 , just to be a "Safe" guess ... :humm: