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  1. DART 496 8.1L head replacement - Performance Boats Forum

    Jan 17, 2011 · Dart 8.1L 496 iron head Beer 30: Just read your comments on the OSO thread on the new Dart iron 8.1L-496 head and just thought I would address your comments about myself, Raylar, …

  2. New 90MM 8.1L Intake Manifold - GMC Truck Forum

    Jan 27, 2014 · The Raylar Cool Gap manifold is the only difference between the marine and street packages. Our truck stage 2 package produces 527hp / 581ft-lbs of torque with the modified stock …

  3. Raylar '8.1' | Page 2 | GMC Truck Forum

    Raylar 8.1 heads ~348cfm Int/ ~226 cfm Exh (2.195" dia Int/ 1.79 " dia Exh & 11/32" dia stems). Raylar head cfm data obtained from Raylar web site when heads were first made available. This data is no …

  4. 8.1L Whipple 2.9L Supercharger - GMC Truck Forum

    Jun 25, 2015 · 8.1L Whipple 2.9L Supercharger 1 reading Jump to Latest 34K views 31 replies 16 participants last post by Raylar Engineering Jun 11, 2016 Raylar Engineering Discussion starter 104 …

  5. Who's got a Raylar kit on their 496? - Performance Boats Forum

    May 9, 2012 · Raylar has 496 owners who have had the kits and engines done by Raylar on their boats for over 8 years and many still going strong. If you have something you wish to propose for Raylar …

  6. 496 Mag HO Build - Performance Boats Forum

    Apr 8, 2010 · This Raylar kit on a stock 496 engine will produce 525HP and 610ft/lbs of torque on 87 pump gas with the stock Mercury exhaust as verified by several independant dynos around the …

  7. Raylar '8.1' | GMC Truck Forum

    Jan 10, 2013 · Anyone running any raylar parts/Internals? Im an 8.1 guy and they seem to be the best when it comes to the 8.1

  8. Raylar '8.1' | Page 3 | GMC Truck Forum

    Apr 13, 2009 · Raylar rods pistons heads intake and 206 sc cam. Plus I got another 8.1 powered 1500 truck that I may leave n/a at the moment that makes 500 hp and gobs of torque with a dinky zz502 …

  9. Raylar 6.0 Suburban 2500 -> 8.8L Engine Swap - GMC Truck Forum

    Sep 8, 2013 · I just got word the project is a go! My 2003 Chevrolet Suburban 2500 will be the new Raylar test vehicle for the BBC swap & 540 stroker kit. With your permission, we're planning to post …

  10. Mercury 525 Whipple??? - Performance Boats Forum

    Aug 22, 2009 · This package will allow a moderately simple transfer of external systems and accessories and a return to Raylar of your existing long motor assembly and ECM. This will allow …