[Keithc8]

I believe the first problem that Shelbytexas had was that the engine blew the head gaskets and that needs to be researched. The other problem is he does not want to spend a lot more money and this may limit what can be done. He told me the other engine builder drilled the block for the hydraulic flat-tappet camshaft. Till the engine is torn down we will know nothing. The engine may have lost a cam lobe. When we take it apart we can cc the pistons, check the deck height and cc the heads. A lot of people assume these heads are the 72cc that they are advertised at but are more like 75/76cc. I know the engine can be helped a lot with head porting and camshaft. The stage 2 heads we do will pick the flow up about 50cfm intake and 40 on the exhaust at least. With better head flow and more lift you can run a smaller duration camshaft to help the vacum and still fill the cylinders well. This is why good head flow and running a hydraulic roller that will have .625 lift to make use of the head flow works. I wish I had been able to do this engine from scratch. The exhaust on the car will also restrict the power some what. We are seeing more like 20 percent on the chassi dyno with most applications through the exhaust and drivetrain and I believe this is pretty common. I believe over 400HP and 400 ft/lbs torque should be no problem. Its all about time and money. We may have been able to tune more HP out of the engine if it had not blown a head gasket. These kind of deals are not any fun for anybody. I hope we casn help get the car running the way Shelbytexas would like. Keith