Try and find out what rpm they are taking the hp rating at and compare it to the rpm that it was rated at before, it could be like the lower numbers the 6.2 has when you go to a F350, same tune same motor but they pull the numbers at a lower rpm so it looks derated to please the government.
According to the articles I've read on the subject the engine is essentially the same. However to meet the newest emission standards it is certified at a lower RPM than previous years. Given that the newest models also include a 6 speed transmission the performance is equal to or slightly better than the pervious model years.
However to meet the newest emission standards it is certified at a lower RPM than previous years.
I had always wondered about posted specs on horse power at such high RPMs.
Volk, which is how 5 star tuning plays with shifting patterns and gives better performance with no changes to hp or torque .
Volk, I havenít found the hp and torq data for the 2 valve, only the 3 valve. Iím sure the data isnít there or a call would answer those questions.
Yes, you are correct. Had a lengthy conversation with my Ford Dealership. Apparently there is a "middle" generation of the V10's. The early engines had the 2 problems with spitting out spark plugs and snapping exhaust manifold studs. There was a revision of the heads that gave more thread contact area for the spark plugs. He was not sure when that occurred, but thought it was around late 2003. Those heads appear to be most sought after. Then came the 3 valve and that brought about new and improved problems. Spark plugs actual snap off in heads. He told me a 2005 V10 prior to the 3 valve heads were the ideal engines.
An easy way to tell is the 2-valve has plastic valve covers, the 3-valve has aluminum valve covers.