Hat sizes

I'm putting a new 14-71 hh on a 528 bae stage 3 motor. Currently it has a smaller hat a total of 47 square inch opening and i was wondering if you could put too much hat over the blower for the cubic inches of the engine. The big and ugly is 72 sq in and i would hate to be choking the motor. Thanks for any input, trent

 

I'm not sure on the pully. I want to set it on kill so i was going to get the max boost and overdrive it to the most allowed in nhra tafc

 

You might want to consider the 2 lobe Hampton 8/71 roots blower, It puts out as much air per revolution as a striped 12/71, It don't have stripes so you wont have to re strip it , It takes less H/P to turn so it's probably better than a 14/71, and it's lighter.

 

i have the injector for you 11" tall 5-9/16 butterflies all the air you will need for the roots but i dont think with the roots it will be enough for you to compete with the screws in nhra good luck

 

Blowers + injector

Don,t spend your money on a roots for NHRA. It will cost you twice as much to run a new, Roots DMPE etc. and injector. Buy a used PSI and injector, and spend the extra money some where else on the car. You cant run 5.60s with a roots. Have you ever played with a Psi turn the screws by hand and you will see. Just one persons opinion. Because I have been there. Don

 

Don is so rite!!!!!! also on kill you might look into a spare motor..no pun intended that is why we carry spares with us..and that is compleat motors not parts.. as for a hat, go big I have been looking between a carbon fiber and the big and ugly I went for the big and ugly and the reason for this is the blower belt won't break it and they idel good also, but yes the weigh more..just my 2 cents, and Jim has a very nice carbon hat for sale you won't find one for a better buy than his...Dave
www.myspace.com/daveloweswr

 

the only roots car i know of that can run 5.50s is the boys from iowa brands coline car eric and dale i havent heard of anyone else doing it

i did it once but when i woke up i realized that i was dreaming i wanted to make another 5.50 pass so i hurried up and went back to sleep but it never happened agian damn hey thats what dreams are for (lol)