StrokerSmoker88

I hear there is a plug from a mack that we can put on or p pumps? What will this do and where would it go? thanks

SS88

Ocmechanx

Screws into the front of the inj pump at the end of the rack, and it increases rack travel.

LockedandLoaded

So basically like a gsk, or more for fueling?

Anymore more info on this? Sounds interestin!

logskidder

The Mack rack plug is a last ditch effort to gain max rack travel from the 160-190 P7100 pumps. This mod is worth 30-60 HP after you do the afc and fuel plate mods. This mod will hurt performance on 215-230 pumps.

oldblues

hi
does anyone have a pic to compare the mack plug to a stock one for a 180 pump ?
where do you get the mack plug and what part no ?

smkn97s

I dont have a pic but your stock plug is 2000 and the mack plug is a 2095. You can get one at a pump shop (piers,schied) or search around on the internet.

LockedandLoaded

So why would it give gains on a 180 but not on a 215 pump?

Cause I've been lookin for cheap upgrades to compliment the washer mod and grinding the fuel plate and whatnot...