Love Harley-Davidson Shovelheads and owned a couple. But their engines have quite a few well-known and documented mechanical issues. In addition you may want to bring your Shovel into the 21st century with not only improved performance but the ability to make power equivalent to the more recent Evo and Twin Cam engines. Out of Canada a company called Sorensen Performance just introduced “Dual Tight Quench Heads” to make you forget about all what is bad in a Shovel.
Their heads are 6061 Billet fully CNC machined and fully ported out of the box. They have 2.06 thin stem intake valve high tulip and 1.71 thin stem exhaust valve (for superior flow) high tulip and Manley .650 lift spring packages with titanium retainers. The intake port floor is raised 3/8” with a 1.750 intake opening. They added fin area around the entire head to improve cooling. They also added fin area to the top of the head to help eliminate overheating of the center part of the head. Their bolt on heads adds approximately ½% to 1% of compression. Sorensen Performance states that they produced a head that all others will be judged by. Talk directly to Mike at 306-761-0064 or read everything you wanted to know about these new shovelhead Heads by going to Sorensen Performance.