Reply to "Heads"

...I have done the 'Change' and MY OPINION is: Get Them (closed chambers)on There!!! If You do nothing else but change the heads You will get a Minimum of a 40 Horsepower increase. If You still have the 'Dished' pistons, You'll be at 9.5:1 Comp. Ratio. Flat Tops will have You at 10.5:1 and even more Horsepower. That is 'Static' Compression. If You change the Cam the Duration 'Overlap' will play into it. Other Mods to Consider, but Not limited to, are: Intake Manifold and carb, Headers, Roller rockers, Electronic ignition, and That doesn't even start on the Oiling System! Stay with the Huge Canted Valves!, and You'll be way over 400 HP at the Flywheel. Now Here's the 'Kicker'; When You have done all this (and a little more, there are other 'Tricks' that must be done), If You go with a ROLLER Cam (it can be a Hydraulic); You'll be 'Kissing' 600 HP at the Flywheel! Believe it or Don't!! When loosing aprox. 100 HP through the Transaxle, You'll still be laying down 500 onto the Tarmack! Most will argue against this, but I have had a Great Pleasure proving them wrong! The downside is, You will Forever be searching for the Best Premium gasoline. Although I have never had to use a Octane Booster. And of course the factor of increased smog emissions! In Califonia we register our Cats as 'Historical Vehicles' which makes them Exempt from Smog inspections, as well as much less expensive to Register! For Now anyway!! Shssss....be careful who You tell this to...