i have TOG's i'll be putting on w/ my Radix... Flyer has the same setup and is seeing good results...

 

I think to decisively beat L's you'll need the 9# pulley long tubes and a good size stall.

 

Damn..I'm an idiot, you've got a vig 2800!!!

What does that thing stall at? What rpm does it drop back to after a shift?

 

To be totally honest. I really havent gotten on it other than when I raced the SS silverado a day after the install. I havent taken note of what it stalls at or what the drop after shift is... .
Damn, I'll need 9# just for those ?? I really thought I'd be damn near 13's if not in them. Oh well....

 

What do you run now?
With a centrifugal type supercharger, the more stall the better. Also, the more shift extension the better. You want to stay in the powerband as much as possible.

Well go out and get on it a little and check!

 

To lay the smack down on a Lightning is gonna take a lot more than you have. That truck is DESIGNED to haulass, ours aren't. Once you realize that you'll be okay. They have a 3/4 ton transmission and rear axle then a roots blower on top of that. You may in time be able to take down a stock L, but even with light mods they get nasty fast!

I dont' think that PI converter stalls high enough for what you're trying to achive, with that little 5.3 isn't helping, nor are your 20" wheels. You're pushing a heavy vehicle around trying to make it do something it wasn't designed for.

Not to burst your bubble but I'd be shocked if you even can get it into the very low 14s as it sits now. You're asking a lot from it...

 

I agree Hitman. When I put on my ATI, I thought it would take down a lightning with just that. Turned out I needed 11psi, 3800 stall, FLP trans, and lots of tuning trial and error to take one down. I run about 1/2 sec quicker than a stock L now.

 

It was originally stalled for 3000, I had it restalled before installing b/c I thought it would have better drivability.
So what are we talking here to get mid 13's. Ive got some money to play with so what do you think. Id like to keep the stall as is. I really like the drivability. So, Im looking at some TOG's, rebuilt tranny, 4.10's, Posi, ALK kit with 9-11# pulley. Well then rapidly degrading internals Im sure . What are the limits of the stock bottom end?? Will I need a new cam??
I know this is an uphill battle, but I like this vehicle..

 

With a good air/fuel ratio, as long as you keep your alky tank full, and don't let it detonate, your bottom end will easily handle pegging the MAF (~600 flywheel hp).

If you want more than 6-7 psi safely, I think you need to get edit, EFI live or a similar datalogging program and a wideband.

I think its gonna take 11psi with alky, TOG's, rebuilt tranny and possibly a bigger stall to get low 13's.

Don't worry about doing it all at once though. Doing things one mod at a time is half the fun. That way you can see what effects your times the most.

 

I think its a huge uphill battle with a centrifugal supercharger. If I had it to do over, I would've waited for the Radix to come out. I got my ATI about a year before it was released.

I really believe I would be faster with a radix@10psi and a 3000 stall, than I am with the ATI@11psi and a 3800 stall. You need horsepower under the curve to get these heavy things going.

Probably not what you want to hear, but an 8psi radix kit, and TOG's with your current stall will get you damn close to low 13's. Have you started installing the vortech yet?