Which power adder for this SBC Engine?

[Texas Hotrod]

You almost have the perfect combo for a turbo motor. Change over to a set of D-cup pistons, swap in a turbo cam, send the carb to CSU and it'll be set (so to speak).
The question that nobody asked is: What kind of power are you looking for??? An instant hit, or do you not mind a little lag in power??? It won't be cheap which ever way you go.
A roots blower will have quick power delivery. The instant you floor the pedal, it'll be making max torque. A Pro charger (Paxton, Powerdine, etc...) needs to be wound up before the power comes in. Pulleys can be changed for faster spool up times, but still, it's not instantanious like a true blower.
On the down side, blowers and super chargers take power to make boost. It takes power to drive the pulleys and pump the air. At least with a 6-71 type blower, the rotor speeds are slower than a mini blower and tend to develop boost easier. The major complaint when dealing with a Pro charger is belt slippage. Low boost is no problem, mid #s cause issues w/surpentine belts and high levels of boost almost require a cog system.

If you truely want big power #s, a turbo system is the only way to go. The way I see it, the stock block is the only limiting factor in your combo. You could easily make 1Khp by making a few changes in your combo with the addition of a good quality turbo system. Intercooling is a big benefit, but (like Tony L said) met/water has been proven to help almost as much. I'coolers take up more space and require more plumbing.
I built this system for Alex's car. It could have been built easier and cheaper, but he could afford the costs and I have the abilities. This is what we came up with. ---click on the pic---


Out of the box, on the first boosted run (in my webshots vid), the waste gates were set at 10psi, with traction being the only issue. I hit 2nd gear the instant the tires lit off. If the turbos (turbo) are sized properly, there's virtually no lag. Small turbos will come on instantly, but will have limited high end out-put. Bigger turbos are capable of of producing a hard mid/top end punch with big power potential. So if there is any lag, it could be tickled w/a little nitrous to get things spooling. Dual staging (one smaller/one larger) can give good results of both, no lag w/big #s.



The car is a complete package, so it's made to take it. Changing waste gate springs, and it's good for up to 20psi (no worries about a belt slipping), easily in the range of 1Khp. Intercooling would easily add a lot more to those #s (1200 to 1300?).

Turbo system??? You'll need the proper fuel system (similar to an e.f.i. set-up) and the proper MSD boxes. Is your tranny/rear axle up to it??? Brakes???
The biggest issue for me was the proper header system. Since I didn't find anything I liked, I built my own.
The big question is: How much do you want to spend????