Pro-Series - 650cc - Gen III LS "Multec 2"

This is an SEP original! Nowhere else can you find direct OEM fitment for A TON of Chevy truck engines with this high of flow! Testimonials "Well I have to say first off your  customer service is  AMAZING 👏,  AND almost as good as your products..... I have a 79 k5 with a mild 6.0ls 450lph   comp cams  ls1 269lr  cam  and a 4l60e with 2600 stall  converter  . Purchased  a set of your  SEP 600cc, I'm new to  the whole tuning thing but between your staff and the terminator x max my blazer RIPPS! Thank you for your help and your bad @$$ products.... forever customer" - James Sets of 4-6-8 will be matched to less than 2% variance on a dynamic test when ordered. Flow report included in package and stored in our database for future reference. Full Injector Flow/Offset report included in package. Plug and Play ECU tuning data for all SEP Injectors included with purchase via email. (Plug and Play ECU data/Injector characteristics provided by Calibrated Success Inc./Greg Banish) Fuel Compatib