LSA Available Pulley Combos and Supporting Mods Needed

 Here is a spreadsheet to reference when you're planning/modding to help you figure out what you need at what levels.  Granted all of this depends on a wide variety of things from plans of use for the car like street, strip, and/or track to where you are, ie temps, atmosphere, climate changes etc.  Less air restriction such as free flowing intake, headers, exhaust, porting etc all drastically help reduce heat by increasing the ease of the blower and airflow in and out of the engine.  Your cam profile will also affect the air movement!  

  Keep in mind, preventative heat mods such as heat exchangers, tanks, pumps etc can't be done too early really.  My V bone stock was pulling timing between pull 2 and pull 3 on the dyno due to increased heat.  Even stock V's can benefit from some of these mods, but they really become a necessity as you push the blower.  Even as you add more blower RPM, you have to add other parts to reduce restrictions and protect your motor.  So, feel free to get a hold of us and we'll help point you in the right direction for your planned end game.  

You can see the effective blower ratio in the first column, the % of increase over stock in the second column, the RPM of the blower vs. the engine RPM in the third column, 

Blower Ratio % Increase Blower RPM at 6,700 RPM Blower Pulley Crank Pulley Idler #1 50mm Idler #2 100mm Bracket Needed  Boost (psi)
Stock 2.74 0.00% 18,358 2.95 8.10 0 0 N 8.6 
2.92 6.40% 19,532 2.95 8.60 50 0 N 10.5 
3.08 12.58% 20,668 2.95 9.10 50 0 N 11.5 
3.22 17.53% 21,576 2.95 9.50 50 0 N 13 
3.39 23.72% 22,712 2.95 10.00 50 0 Y 14 
3.56 29.90% 23,847 2.95 10.50 50 0 Y 15 
2.84 3.73% 19,042 2.85 8.10 0 0 N  9
3.02 10.13% 20,218 2.85 8.60 50 0 N 11 
3.19 16.53% 21,393 2.85 9.10 50 0 N  12.5
3.33 21.65% 22,333 2.85 9.50 50 0 N 14 
3.51 28.06% 23,509 2.85 10.00 50 100 Y  15
3.68 34.46% 24,684 2.85 10.50 50 100 Y  16
3.24 18.25% 21,708 2.50 8.10 0 100 N 12
3.44 25.55% 23,048 2.50 8.60 50 100 N 14 
3.64 32.85% 24,388 2.50 9.10 50 100 N  15.5
3.82 39.42% 25,594 2.50 9.55 50 100 N 17 
4.00 45.99% 26,800 2.50 10.00 50 100 Y 18 
4.20 53.28% 28,140 2.50 10.50 50 100 Y *BOOM* 
3.38 23.18% 22,613 2.40 8.10 0 100 N 15 
3.58 30.78% 24,008 2.40 8.60 50 100 N 15.5 
3.79 38.38% 25,404 2.40 9.10 50 100 N 17 
3.96 44.46% 26,521 2.40 9.50 50 100 N 18 
4.17 52.07% 27,917 2.40 10.00 50 100 Y  *BOOM*
4.38 59.67% 29,313 2.40 10.50 50 100 Y   *BOOM* 
                 
Blower Ratio % Increase Blower RPM at 6,700 RPM Injectors (93/91 Oct) Heat Exchanger Needed High Flow Pump NorCal HX Tank Needed
Stock (2.74) 0.00% 18,358 Stock Stock No No
2.92 6.40% 20,668 63lb and up Stock No No
3.08 12.58% 20,668 63lb and up weapon X 36" Single Wide Maybe Maybe
3.22 17.53% 21,576 63lb or ID850 and up weapon X 36" Single Wide Maybe Maybe
3.39 23.72% 22,712 63lb or ID850 and up weapon X 36" Single Wide Yes Yes
3.56 29.90% 23,847 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
2.84 3.73% 19,042 Stock Stock No No
3.02 10.13% 21,393 63lb or ID850 and up weapon X Track Attack Maybe Maybe
3.19 16.53% 21,393 63lb or ID850 and up weapon X Track Attack Maybe Maybe
3.33 21.65% 22,333 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.51 28.06% 23,509 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.68 34.46% 24,684 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.24 18.25% 21,708 63lb or ID850 and up weapon X 36" Single Wide Maybe Maybe
3.44 25.55% 24,388 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.64 32.85% 24,388 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.82 39.42% 25,594 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
4.00 45.99% 26,800 ID1000 weapon X Track Attack or 36" Double Wide Yes Yes
4.20 53.28% 28,140 ID1000 weapon X Track Attack or 36" Double Wide Yes Yes
3.38 23.18% 22,613 ID850 or ID1000  weapon X Track Attack Yes Yes
3.58 30.78% 25,404 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.79 38.38% 25,404 ID850 or ID1000  weapon X Track Attack or 36" Double Wide Yes Yes
3.96 44.46% 26,521 ID1000 weapon X Track Attack or 36" Double Wide Yes Yes
4.17 52.07% 27,917 ID1000 weapon X Track Attack or 36" Double Wide Yes Yes
4.38 59.67% 29,313 ID1000 weapon X Track Attack or 36" Double Wide Yes Yes
                 
* This chart was compiled for stock LSA cubes, larger cube motors move more air and thus require more fuel.
** Disclaimer:  This is only to be used for reference guide.  Tuning, Atmosphere, Temperature, Fuel, Air Flow etc all play a factor in the desired outcome.
               

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