Just for grins, BrandX, post up your weight and the assumed cid & heads of the new engine.
Your car's photo looks like a nicely built "door car" vs a full chassis car. Say it can get down to a 3000# weight (with driver):
Wallace's calculators says "Your HP is 1,162.44 computed from your vehicle weight of 3000 pounds and ET of 7.99 seconds."
To run a legit 7.49, "Your HP is 1,411.12 computed from your vehicle weight of 3000 pounds and ET of 7.49 seconds."
So IF we assumed 1500 hp as a target, you get: "Your ET / MPH computed from your vehicle weight of 3000 pounds and HP of 1500 is 7.34 seconds and MPH of 182.56 MPH." A solid 7 second performance.
So say we assume a 1500 Horsepower target.
A typical engine will make between 9.5 hp and 10.5 hp for EACH "pound of air mass" flowing thru the engine in ONE MINUTE. Not cfm, AIR MASS.
so:
1500 hp divided by 9.5 = 157.9 lbs per minute of air required.
1500 hp divided by 10 = 150 lbs per minute of air required.
1500 hp divided by 10.5 = 142.9 lbs per minute of air required.
Worse case (with a cushion) would say we design for 160 pounds of air mass per minute turbo system. If you want a CFM number: The conversion formula from cfm to lbs./min. is to multiply or divide by 0.0691 depending upon the conversion direction. So we divide 160 pounds of air mass per minute by .0691 and get 2315.5 cfm.
We then go to the Turbonetics site:
http://www.turboneticsinc.com/content/compressor-maps
And we look at the "HP76 Turbocharger Map" as an example: (it is the first large map after you use the link).
It shows that under best conditions we could move 80 lbs of air per minute from one HP76 turbocharger at a little over 20 psi of boost (2.4 pressure ratio on the left side of the map and "80" at the bottom of the map. The compressor efficiency would be about 74%. If you wanted a bit more efficiency you could step up the Pressure Ratio to 2.8
and be in the 76% efficiency island. In reality the maps are typically not perfect as far as efficiency numbers go vs mass flow numbers which are more accurate. mass flow makes power, lower efficiency numbers raises the air temp going into the engine slightly. So you would need TWO HP76 turbos to make about 160 lbs of air mass per minute. You would have a lot of cushion if you only needed 143 lbs of air mass per minute.
A pair of Y2K Turbos (T-88s) would make well over 2000 hp at a 2.4 pressure ratio:
http://www.turboneticsinc.com/sites/...T-88%20Map.jpg
Looking at the Turbonetics catalog:
http://turboneticsinc.com/forum/turb...11_CAT_LOW.pdf
If you look at page 17 of the catalog under the TN series Turbos you will see that the HP76 Turbo is rated at 1000 hp per turbo. lots of room to make power.
TN1000-BB 1000 (Horsepower) HP76 Super-T 4.5"/3.0" F1-68 T4 .96A/R 4-bolt/V-band n/a 11530-BB
That would be my first estimate on how to make your goal.
A Single Turbo Installation using a HP-106 TNX turbo (same basic size as John Welters deal) as we know will make excellent HP and run 6.80s (which John W has done several times).
HP-106 30649 5.50" 20737 (11175 TNX0106 1.32 A/R 1750 HP+)
Tom Vaught
ps the Turbo is just a small part of the whole deal though.
Travis Quillen would also be an excellent resource for this project.