Duale Key Way need for a blower?

[cudaken]

 Ok, I am still happy man but this may change that mood. At a show I was at a 70 427 Nova with a odd look duale quad intake? Found the owner and asked him "is that a blower intake with two 4 barrels"? Answer was yes it is and we stated to talk. He ran a Little feild 8-71 Blower (did not ask if it was raced prepped with wipers and he had no idea if it was under or over driven).

He started to tell me about stuff I hope I have cover then key way on the crank came up. Told me you need two key ways cut in the cranks so you don't break the key off? God, with as many hacks, opps shops that have worked on my 440 all knowing it was going to be a Blowen 440 someone should have caught it? Leo Supercharger's should have caught it if that was a problem, he did the lower drive.

If he goes Opp's, well after he is buried the Blower will go on E-bay and the blower cam. Do more more head work on the heads, get a new intake and make 500 HP the save way.

                              F--ked Ken

Someone tell me BB Chevys have little keyway's 

[Chryco Psycho]

you should be fine , you will not be making as much power / boost as tyhe one I built & we had a single keyway , Chevs are always weaker

[Blown70]

All the blower people I contact mention that first?  I don't know of anyone that has not told me that.  Strange how no one caught that along the way.  I have been told you can go with out but most wont risk it becasue if you over twist wellll....

[firefighter3931]

All the blower people I contact mention that first?   I don't know of anyone that has not told me that.   Strange how no one caught that along the way.   I have been told you can go with out but most wont risk it becasue if you over twist wellll....

It depends on the application. A Big stroker hemi with a 1071 and 15 lbs of boost should probably be double keyed. A mild iron headed 671 won't need it. My friend with the blown Coronet runs a single key and has for years....671 blower and 10psi of boost. We assembled the rebuilt engine recently and the keyway in the lower hub looked fine. Don't sweat it Ken  

Ron

[Blown70]

All the blower people I contact mention that first?   I don't know of anyone that has not told me that.   Strange how no one caught that along the way.   I have been told you can go with out but most wont risk it becasue if you over twist wellll....

It depends on the application. A Big stroker hemi with a 1071 and 15 lbs of boost should probably be double keyed. A mild iron headed 671 won't need it. My friend with the blown Coronet runs a single key and has for years....671 blower and 10psi of boost. We assembled the rebuilt engine recently and the keyway in the lower hub looked fine. Don't sweat it Ken  

Ron

Who would be that crazy to run a stroker hemi and a 10/71?

[cudaken]

 Ah Tom, you may want 3 keyways

OK, worried about nothing I hope.

                                 Ken

[Blown70]

Ah Tom, you may want 3 keyways

OK, worried about nothing I hope.

                                                 Ken

I dont think I would worry Ken.  I will do it just because of my application....

[CFMopar]

Damnit ken fire it up allready!

I get ansy and wet everytime I see a post about anything blower related from you!

[cudaken]

 Thread_Marshal, at this point I am just happy the dam 440 run's. I would say don't rush me, but at this point I am a year behinde.

Don't worry, another 400 miles you will see me poat about what I twisted off, broke or blew up.

                                           Cuda Ken

[CFMopar]

Good

Looking forward to it