My friend's finally getting his KB blower Thursday....
 

He has a 2000 lightning like mine. He got his new and had his for about a year b4 i got mine.
He's got the basic bolt on's already. Diablo chip, 12' cone filter, 90 mm mass air, single blade throttle body, Bassani exhaust, shorty headers and a 3.73 rear end. He ran a 13.2 with that set up.
He's been waiting for his blower from Jim Bell and he say's he'll have it Thursday. He's putting it on himself. He is getting 3 pulleys, an upper, and 2 interchangeable lowers. He wants to run 13 pounds of boost around town/street. And then swap out to 20 pounds for the track or for a race here and there. That’s a lot of boost! He also has a set of Nitto's do you think he'll need to upgrade to some ET streets or slicks with the race set up he has? Aside from traction, I know swapping out pulleys isn't hard and he can go from 13 to 20 pounds of boost out of the blower in 5 minutes. My question is how should his times be both with the 13 and then with the 20 total pounds of boost. Another question i have is not only his times, but how many passes with the 20#'s can he make with the stock block?

he's an idiot if he thinks he's going to run 20 PSI with a stock block, HAAHAHAHAHAHA.

He's going to have one of those new vented motors!

slicks, yeah even you need slicks shane.
I told you and your buddy to not do that yet, but you wouldn't listen to me again. there's plenty of other mods he can do to go fast and dip way into the 11's with a stock motor and blower. Cramming as much in there as possible is going to make more power, but you have to get it out too and his bassani exhaust is god but he really needs to upgrade to long tubes if he wants more power. the new KB blower is going to be sweet, but he's never going to run 20 PSI for any length of time with a stock block. it will blow and then he'll be out another 3500 bucks. unless thats his plan.

20#s is insane for a stock block. i would do a conservative 14-15 max if he plans to drive it daily, or maybe 16 or so if it is mostly a track vehicle.

he also better have a d/s loop, t-bars and some sticky tires for that setup...

Yeah he's heard that a million times. And he's doing it anyway. He has yet to mess with swapping out pulleys like i have (4# lower) or get electric fans, or long tubes like rtkilla said. I think there's a lot more he needs to do to expect to run an 11. Everything looks good on paper and over the phone with Jim Bell, but i would stick with about 13 pounds or so out of the new kb blower.... Then build up my bottom end or get a built short block, then boost it to 20 if i want all day long.
I'm not positive what im doing with my truck in the next few years. I think Honestly it depends on what a lot of other people do. It sounds wierd, but i like to watch other people first. The kb blower is going to be nice. But so is a built bottom end and the kb. If i didnt have money for the bottom end, i'd stick with 13-15 pounds of boost out of the new blower though.

he'll justt throw superglue on his tires :P

What year is the truck? 2000?

If its a 2000, I say it lets go within the first 10 runs

Anything later, first or second at 20psi.

Be sure and ask him to run it at 13psi first I want to see what he runs!

it is a 2000 and he is going to make a few 13 psi passes. How should he do with that? a low-mid 12 if he gets traction?

I would run a stock lower with a stock block and the just change uppers w/ no more than 14psi or so. Just my opinion.

Stock lower and 3.25 upper equal about 13 pounds. A stock lower and 3" upper equal about 16-17 pounds. A stock lower and a 2.75 upper equals disaster on a stock motor. Skip

is that right? changing the upper to a 3" you'll double your boost from 8 to 16? I've never heard of that. Ive heard of uppers being bad for ya, but i dont see how you get another 8 pounds of boost out of a 3# upper.

It's a 3" upper, not a 3# upper. :thumbsup:

how much more boost do you get out of adding the 3' upper? And why is it such a disaster?

Thanks for clearing it up, i didnt know that with a stock lower and just a 3 inch upper you'd be getting 16-17 total pounds of boost. Is that 3 incher then smaller than the stock pulley? Then it spins more and gets more boost out of the blower? I know our blowers aren't going to handle that, could the KB?

NICE!