I would look at what others have done with tahoe's or other heavy vehicles and compare. Definitely do proper research, even talk to them and see how satisfied they are with their setups before you pull the trigger. How much does she weigh?

 

yes, Ive been researching, and this is where im at.... Ive had several setups in my truck, 4000 stall, 4.88 gears. I bet it cut great times with that setup. but the hwy sucked, and made me reliaze I dont really want that much bottom. I was looking for more mid - top end speed.

40, 60 roll punches etc... I do lots of spirited driving... got to be 1st off the line... 4.88s was fun city, but the worst with my 32s on hwy. Now I went to 30" tires with 3.73s. hwy, punches are better, city not as good as b4. My 4k 9.5 stall was too freaking loose for my truck, kept flashing every chance it had. 100% happier with circle d 3200.

so decided to make more power, to keep my 3.73s and this 3200 stall, as it feels perfect for the truck manners wise..... so im doing the l92 swap with intake. But as planing for future, I know Ill want more. so decided to keep compression 10.3:1.... So Im at this point to add FI.

Its a badass video of a Tahoe on youtube. and Its turbo. I think he is on here TurboHoe.

I want my truck to handle like that.

the cam specs of my cam are



as far as weight of the truck.. I think they ring in at 5800... iirc.
but for me no spear tire, or no 3rd row, minus the 1000lbs of tools I removed. So she is about as light as I can imagine without tubing it. which Im not.

trucks lowered 2/4 and handles surprisingly well.

matte black wieght????

Ive raced everything from fullsize trucks to RCSB trucks, they cant hang with me, so I know my truck is not a regular Tahoe or as heavy as some claim. I contribute alot to a A+ tune. heck I ever raced a new challenger and had him bangin to rev limiter just trying to inch on me... Smoked a Nissan 350, Till he came back on top end only to a length (heck even that particular run in I had a stock 80e stall) Maybe everyone who ran with me has been playing with me. lol

Just to clear things, up my truck is not slow at all, Just wanting it to be able to go the extra step now, with boost. My buddy has his duramax 07 stock with programmer, and he wants to line up. Both our friends say the trucks feels about the same, but my truck has advantage. (But I think my exhaust is deceiving them)
I like picking on the challenge. Right now, my truck is built to outrun a 6.2 stock, but wanting to play with the diesel guys as well.. thats why Im at this stage now.

knowing me Im going to do a turbo, if it will work with this cam I have. with the l92 heads, I should make even more hp as I go FI...... the cam was specs by Comp for this application NA. That cam is for L92 heads and Cathedral heads. From what I research turbo and cams, seems like nothing is wrong with this cam.

please all input is welcome

you guys be surprised how well it moves, I wish I had numbers. Anyone who has seen/heard or ran me knows. I guess the vmax is runing just that good. But like i said, Im doing l92 swap, and wanting to turbo.

 

I have a turbo truck, and two supercharged cars. The truck is the least powerful, but I like the way it pulls best. The supercharger should be easier to get traction with if that's a concern. I'm running one supercharger, and one turbo at 10.7 compression making 10lbs turbo, and 13lbs supercharger. The turbo will make more power at the same boost level.

 

this puts more perspective on things, turbo seems to keep pointing to what I want... PULL... as well as growth. Seems like I can run this setup, and switch it over to a built shortblock when the time comes, like a 414 or something and up the boost.

Now my question arise.. as Im 90% going turbo.

Can I get all custom hot pipes. and Add a specific turbo that can work better for my setup? I know the S475 was recommended. Or do I stick with a kit from KB racing or tick kit. What type of level? stage?

Do all the turbo kits, have to loose the clutch fan?

Will 50lb flex fuel injectors with adjustable fuel pressure regulator.. will it be a limit as far as feeding the motor? I know high pressure will change those to about 100lb injectors if need be.. am I correct here?

The fuel system will be addressed no biggie, I can do 2 pumps and a booster if I need. Just thinking injectors now as Im runing a l92 intake.

I think a turbo with the 3.73s be badass actually, and hwy mpg be better?

again the truck is not going to the strip or seeking a number.
it is just for the street racing, dd, fun toy. Built for a lot of fun, when you put so call sport cars to back off.

 

With something like a Tahoe, I'd rather have instant torque when I mash the pedal. A Procharger is good, but there has to be a fair amount of revs before you see max boost, or so I've been told. A whipple/kenne bell would be ideal in your situation, IMO. Instant power, as soon as you drop the hammer, and more efficient than a roots blower.

 

Just get one of each.

 

You can make 50lb injectors act larger by increasing fuel pressure, but it only works to a certain point. Then your pump can't maintain that high pressure. If you run boost referenced fuel pressure on 50lb injectors with enough fuel pump behind them I'd guess they'll support close to 600rwhp.

I've never owned a roots type supercharger, but I have driven a couple. They do provide nearly instant boost, but they didn't pull like my turbo up top. With my turbo setup the only time I don't have nearly instant boost is from a dead stop if I don't brake boost. If I get on it from a roll there is essentially instant power/ boost.

What I like about the turbo setup:
Multiple boost levels at the push of a button
Power is available based on demand/ throttle position. Not RPM
Initial cost is lower than a supercharger. Until you add options.
No modifications to the accessory drive to make big power.
Headers are not needed.

 

With what you're wanting I would go with what Kyle said. Turbo all the way for roll racing no question! Wouldn't even consider anything else for that. The cam is big and not needed with a turbo but I wouldn't change it. The inj. won't give you a lot of room for much boost. Fun project, I love a sleeper. Kickin' peoples asses with a Tahoe!

 

You can't make a Tahoe fast

That said, hard to beat the off idle boost from a roots-type blower

 

thanks alot for the insight, its what I want. like I said. I am going with what Kyle recommended for me.

haha, I think your wrong there. lol
been clocked at 145 already. and funny thing it was a unmarked trooper that was runing with me for miles. but thats another story.