It's 4-71. I believe the number means 4 cylinders, 71 cubic inches per cylinder. It was a scavenge blower on Detroit Diesel 2-stroke Diesel engines of the same name.

And then of course there are the 6-71 and 8-71 blowers...

 

yeah, thats what it is, i think that the 6-71 would be a bit much don't ya think?? and i don't even wanna think about the 8-71....

Can you say overkill???

 

Overkill is a band, not a concept.

Chew on this: Roots blowers are VERY inefficient because of how much they beat the air. A larger blower turning slower will beat the air less.

So you could still run 6-7psi of boost and have efficiency possibly as high as 50% instead of 35 or lower (even into negative numbers). And beyond the less stress on the engine, additional power might even be enough to compensate for all the added weight.

 

just run a vacume resivour for the brakes and PCV

 

hey, overkill is a CONCEPT. I probably would put a 6-71 on, but i'm getting this one for cheap, so, yeah.

 

It's not a concept. Does not compute. No such thing as too much

 

lol... TOO MUCH MONEY.....