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If you have called HPR before about building an engine you will be asked a number of questions.  One of those being, are you looking to do a solid roller or hydraulic roller valvetrain?   Why is that?   Well for one it helps us narrow down some choices for you and better estimate the costs of your project.  The other is making sure we have the correct cylinder head casting to start with.  Why is the casting so important you might ask?  Well let us take a closer look.  For the purpose of this article we are going to be looking...

#5 Valvetrain Because this is going to encompass the valves, rockers, heads, gaskets.....this update is going to have a lot of material thrown at you all at one time. So much of the next steps tie into the next part more so than earlier so bare with us. The cylinder heads and valve train can sometimes turn into a mystery for a lot of people on their builds. There are a number of steps that you can take to try and cover as many basis as you can if you are trying something new but it does boil down to...

#3 Lifters. I am choosing to do the lifters before addressing the rods and pistons for a few reasons. In some ways the lifter is often a very over looked part of the equation in a engine build but a vital one. Most people might only think of hydraulic or solid lifters....roller or tappet, but give little thought sometimes to other aspects of the lifter and how that can help a high performance engine survive. Since all most all domestic engines built since 1986 have had roller lifters I am going to leave out the flat tappet lifters for this...

In this thread we are going to outline and show some of the items you might find in a high HP LSx build. In this particular example this is going to be a forced induction, alcohol engine running in excess of 2000 hp. Over the next days / weeks you will see each item being used and we will try and highlight details on why you might need something like this in your engine, or why you wouldn't. For privacy of the customer, there will be no pictures shown of the car or final package installed, sorry. *There are many...