Recent content by MoparMan_1

Not much as long as the compression ratio remains the same. It sounds like you are planning a pretty mild build. The differences in the 308 and Magnum heads are mainly in the combustion chamber size and stock rocker arm ratio. The Magnums will flow slightly better stock and do have a more...

Hello, new to this board. I live in Chelsea, OK (northeast corner of the state). Sure seems to be hard to find Mopar fans around here, especially A body people. Currently have two projects going (74 Dart Sport and 71 Swinger) with a third (75 Scamp) waiting. Don't live too far from...

The cracks I have seen are between the valve seats and don't appear too deep. I have been told that they normally develop pretty quick but am not sure. Whenever I buy heads from the salvage I get a guarantee and return them if there is a problem. It is to the point now that they are pretty...

You're right about the magnum heads. I went through 8 to find 2 good ones. Most were cracked. Looking for two more right now but guess I might have to step up to the Magnum R/T heads. I think a standard magnum head with 1.925 intake and 1.60 exhaust valves are perfect for most 318 builds...