Has anyone heard of putting an 289 crank in a newer block that has a one piece seal? I was thinking as good as my roller cam engine revs it could be even better with a little shorter stroke. any input/advice would be greatly appreciated.
Crank crank can be made to work in a ho block but you need to remember that 289s had longer conecting rods, your 5.0 rods are only 5.090 and 289 rods are 5.115 if youdont run a 289 rod then your piston is going to be .050 in the whole and your compression will suck.
you do have to machine off the oil slinger, that's the only thing that keeps it from droping in. I have a 71 302 crank setting in my 91 block for measurements right now. From what I've read the late model cranks are lighter.
Yes, you'll be able to spin it a few more revs, but low-end torque will suffer due to the shorter stroke. Besides, if it's a hydraulic roller, they dont like anything past about 6200 anyway, they tend to go into valve float. Floating around somewhere is a dyno sheet (on the net) that shows a factory hyd. roller engine that loses 50 HP at 6500 RPM due to valve float, then they added a rev kit and stainless valves (lighter weight than regular steel) and it picked up something like 150 HP at 6800. That's a pretty good increase, but for most street driving, not really worth the effort IMO.
REv KIt Back in the day 91 -92 I ran a solid roller rev it in my 69 falcon witha 302 it was a crower or isky rev kit but dont know if they are still avail. no one runs rev kits any more.
N20 What was the design like? There's no room between the lifters and the heads for a standard spring type. If you can get me a picture I'd be excited. Thanks.
