261 Chev Engine

[Phil Waterman]

Mike you are so right when you say "A word of caution may be useful … CMP's like the HUP were designed by engineers who knew that the average road speed with the 216 would be around 40-45 MPH ."

My HUP with brand new tires and a good running 216 will travel down the road at 45 MPH without undo noise or vibration. Above that speed all those large heavy spinning shafts and parts start telling you that they are getting unhappy ie noise and vibration. The bigger advantage of the re-engining should be expected to be in the ability to maintain that speed going up hills in traffic.

I suspect that slow moving trucks on long up grades is something that most of us grew up with, but with the increase in truck power on big rigs people have less patience.

Other words of caution would of course be related to braking and breaking. Though HUPs for there day have very good brakes you still have nearly 3 tons of truck going down the road on less road contact than a subcompact. The other breaking is breaking drive train components, having now broken both rear axle shafts with just the original horse power care of the application of power comes to mine.

Having said all of this I’m waiting for my 261 full pressure Chevy truck engine to be delivered.