• Part # 7111 **Available now as an upgrade for all Pro Systems 4150, SV1 and Dominator carburetors.  $79.00 per block.
  • Part # P26159/60 Its finally here the SV1 throttle bracket. This ONE bracket fits BOTH 4150 and Dominator bolt patterns. Its billet and has the return spring kit built right into the design. Its everything you need in one. Just choose between the factory GM end or the Lokar cable end.
  • Part # PN7785 If you have an SV1 and want to install an air cleaner our Billet air cleaner bracket makes the install easy. Its strong too, cycled over 1000 times with a 100 lb. load without failure. The bracket extends up and away from the venturi to allow incoming air to fill and straighten. $24.00 includes mounting hardware.
  • Part # SPK1 Stop guessing! This is the best scope available for reading spark plugs. We're racers, so we even upgrade this one to have a super white light to make locating porcelain heat, timing marks and misting even easier. You say you don't know how to read all the information a spark plug provides? Well, you will now. Our tuning video is included. This video gives you an intense series of lessons in reading spark plugs and tuning your engine. You will watch this video over and over. Now you have the knowledge and the equipment...go tune that engine! Check out this link regarding reading spark plugs.
  • Part # VID Learn how to tune Professional engines! In this informative and detailed video we describe: BSFC numbers and analysis Distillation curves of fuels and using them to your advantage Analyzing RacePak Data Reading sparkplugs on regular fuels Reading sparkplugs on C-series fuels Adjusting Air bleeds Selecting sparkplug heat ranges Extensive dyno sheet analysis Fuel curves De-mystified Selecting a proper fuel Using ICT in the real world Altering individual cylinder timing without ICT Jetting with large plenums This video also includes a live demonstration on the wet-flow bench and much much more. Our subjects in the video range from 4150 tuning tips, Dominator sizing and calibration information to correcting and analyzing an IHRA Pro Modified racing engine, and we even give up the secrets to the perfect fuel curve, tested by the current IHRA Pro Stock World Champion. After watching and understanding all the information in this video you'll have completed your knowledge of tuning a high performance engine. This one has it all! There is so much information in this video, you will have to watch it over and over again. When placing your order, please be sure to select VHS or DVD.
  • Part # 7801 The new Pro Systems 7801 Multi Fire HD-i box is the final step in Multi Spark boxes.  Offering incredible reliability and unparalleled consistency for your street, bracket car, circle track, off road, or road race application. Designed to withstand the rigors of full time street use, bracket racing, competition road racing, off road racing and circle track racing, the 7801 Multi Fire HD-i box is your best choice for the power, consistency and reliability you need from your vehicle. The Pro Systems 7801 Multi Spark Ignition is one box, that takes Multi Spark to the next level in performance and reliability.  Easy to install and comes with a built in rev control (install the rpm chip of your choice..making it legal for chip limited racing) this box is all you need for your vehicle. Our 7801 boxes are built and can be serviced right here at PRO-SYSTEMS *Priced at $189.00  **FREE SHIPPING IN CONTINENTAL U.S.A!
  • Part # 7742 The SV1 keeps getting better and better. Fresh off the win at Hot Rod Drag Week, Dual SV1's powered the fastest Naturally aspirated car to ever win the event. The SV1 then won a heads up shootout against the best in the business in a independent dyno competition. Well a new development in boosters for the SV1 has entered the arena. If you have a real tight converter and your car leaves real lazy or worse yet, you cant even get the car to jump up on the converter when you stomp it? We got the answer. Are you looking for more torque and a carb(s) that will instantly jump to the chip when staging? Our SV1's are now available with Power boosters. Our new SV1 Power boosters massively expand the low rpm fuel cone and they incredibly strengthen low speed signal for improved low rpm atomization and instant response to throttle movement and shift recovery. These things are wicked!! Available now for all model SV1's. $29.00 per booster (2 per carb required).
  • Part # PG-803 The PG-803 is nothing new. Its a professionally modified Holley regulator that's been used for years in NHRA Pro-Stock competition. Unlike look-alike regulators that make big flow claims yet still utilize the small seat area that froths and foams up the fuel.  We install a 50 percent larger seat area to reduce fuel bowl foam and stabilize the fuel pressure during high flow rates.  You get good clear burnable fuel and more consistent power from run to run. Once again simplistic design is the key to consistency and reliability. The PG-803 has enough flow capability to CLEANLY feed over 1000 horsepower!
  • Fuel is what makes the power in a nitrous application. You have to get it there and you have to control it. This modified Holley regulator is setup to open on a hair trigger and offer stable fuel pressure throughout the run. It's been body relieved to speed up the opening rate and hand seated to reduce fuel creep. More instantly available torque for your nitrous program can be yours for only $64.95. Part # PN-803
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