My ongoing stroker project has the 440Source 512 kit in it. My builder says the crank was spot-on but one rod was a shade long. After he assembled motor but before decking the block the pistons were measured to be .016 to .017 in the hole on the driver's side and three were .014 to .018 down on the pass. side with the tall one being .010 in the hole. He squared and cut the block .010 on both sides so one piston will be at zero and the others .004 to .008 down. I also picked the Source's balancer. I ordered pushrods last week so my guy should have the motor assembled soon.
The heads flowed about 254cfm intake side, OOTB, not nearly what they are advertised at. Very similar numbers to what Dwayne Porter found when he flowed a set. I had a head builder give them a valve job, back-cut the valves and do some minor port work, and add comp cams 10* retainers and locks. They flow around 283cfm intake side now. Like many others, I wasn't comfortable with their roller rockers so I went with HS roller rockers.
I've been running a McLeod 12" clutch and ordered a new disc that should better handle the tq and hp of the motor and bought a new Hays flywheel to take the place of the original factory flywheel. Cam is an XS290S with approx. 10:1 compression. Looking forward to the break-in and dyno testing.
Should be fun. :jester:
