SE, I started this thread for those individuals that want to build a healthy 2.5. They aren't going to have a serious race machine, but something that will be fun to drive and have a minor amount of bag... AND get some respectable fuel mileage.====
The E Code and the A Code had "solid wall" webbing cast into them (between the cylinders)
..they are the most desirous of all non-race block Duke motors. They were commonly called "Roller Blocks", because of the roller hydraulic lifters that they all had. Also, they were stock in the Postal Van (LLV).
As an aside here:
The hydro lifters are a good thing/bad thing, IMHO.
Bad thing because you are limited to the lift that you can/could use. And they will not follow a "radical" ground camshaft profile, either. Lifter floating raises it's ugly head. But the good is that the cylinder head flow gives up at about 4500 RPM so this is all moot.
Also, the hydro lifters need clean oil and LOTS of it to work well. This is why I always have said that you do not need a fancy oil pump on these engines. Your money is better spent elsewhere. I have read before that an aftermarket, Hi-Pressure oil pump takes 4 to 6 HP to run it. I have no facts to back that up, however...
You've added some info that I neglected since I'm an onion and forget stuff.
You're tune should have a link here, since it is probably incorporated with this info.
Feel free to add a tag here.
I'm sure readers will appreciate it.
One stop shopping?