Boost question?

How much boost can i expect from a 1471 hh littlefeild at 28% what is the fastest i can turn this blower? It is on a 540 hemi it is making 20 lbs at 28%

 

boost

I have been told that if its a billet rotor it can be turned up to 13000 rpm before it goes flat and makes too much heat. I have an old Littlefield hh billet rotor delta bottom 468 bbc 360 heads it makes 38 psi at 52% and 8000 crank rpm hope it helps Craig

 

craig were are about the same on the boost and same over drive..we go thru the lights around 9,800..Dave

 

rotor speed

dave, that is a bunch of rotor rpm. 9800 x 1.52 is 14900 at the supercharger. oh well, i know that you go fast..
glad to see people talking about rotor rpm as this is better than getting fixated on boost. i once changed heads and matching manifold on an engine to a better flowing head. lost 4 lbs. boost (42 to 38) and picked up 160 h.p. because the air and fuel was getting to the combustion chamber and not just piling up in the intake. chuck demaree

 

hey chuck. what have you been upto? I was thinking of giving you a ring, you going to be around tomorrow? if so I will call you.Dave

 

testing

dave, went testing last saturday at dinwiddie (vmp) with my top dragster guys. they will run mostly with d.c. outlaws this year.
since this is a 6.40 index we were trying to get close.
how about 6.436, 6.410, and for their "no breakout" final a solid hit of... .952- 2.60- 3.95- 6.11 @ 226. chuck