The PO of 68 KAT put a bunch of work into the 390 engine rebuild - .040 over, 10:1 pistons, true roller timing chain, port matched heads, Performer RPM intake and a Demon 750.
I replaced the 750 with a 625 Demon with vacuum advance and drivability has improved immensely. However, it still seems to run rich (wet black crap on the garage floor!).
I'm wondering if it will always be running rich because the *%%&$# PO put in a 'RV' cam. The only specs I can find on anything called an 'RV' cam indicates it is just mildly more performance oriented than the stock cam. We ( a local Cougar buddy) were discussing this and I wanted to get a bit more feedback from other learned individuals on this fabulous site!!!
Anyone???
I replaced the 750 with a 625 Demon with vacuum advance and drivability has improved immensely. However, it still seems to run rich (wet black crap on the garage floor!).
I'm wondering if it will always be running rich because the *%%&$# PO put in a 'RV' cam. The only specs I can find on anything called an 'RV' cam indicates it is just mildly more performance oriented than the stock cam. We ( a local Cougar buddy) were discussing this and I wanted to get a bit more feedback from other learned individuals on this fabulous site!!!
Anyone???