1970 Dodge Dart 318 upgrades

posted from 318 link from Jim- above
Mopar timing is by a unique method but close to @.008 similar to what Engle uses
the degrees I posted are at SAE Method- .006 at the valve or .004 at the lifter except I did not post the 318 seat timing just the .050
the seat timing can be 278 @.004 and has really long closing ramps which hurts dynamic compression
318 VALVE TIMING (in Degrees) about the only thing MOPAR duration and timing is good for is to compare with other Direct Connection and Factory cams
Intake Opens (BTC) 10
Intake Closes (ABC) 50
Exhaust Opens (BBC) 52
Exhaust Closes (ATC) 16
Valve Overlap 26
Intake Valve Duration 240
Exhaust Valve Duration 248
The third on the list looks good and is a CRANE but is their 3 series which may be too aggressive
The second cam is a max area asymetrical lobe and has 50% more duration @.275 lift than the Direct connection 260 which has much more seat timing
Note the 24 degrees difference between MOPAR (260) and SAE = 284 and the DC cam is quicker than the Factory instilled cam 240-278 38 degrees!
other contenders
459/480 268/272 212/220 127@200 112LCA Crane 693511
(measured @.006 at the lifter you have to convert)
Lunati Voodoo (s)
Custom order from Howard and Bullet