Predator 420 Parts
Mar 19th 2021
Looking for assistance in putting an order together for a rebuild on my 420. I see you have many options for certain parts.
Here are the parts to build a solid cart engine
These flywheels have the stock timing at 24 degrees BTDC. I would prefer a 6 degree advance key be used with either flywheel.
Use this rod
We have the stock replacement piston with rings here.
I like this cam for you.
or we can go a bit rowdier with this cam.
either of these cams will use these springs.
the rest of the vale train will be fine with either cam.
If you mill the head, you may have to cut your own pushrods to maintain valve train geometry.
We have an intake manifold for a Mikuni carb.
This combo would easily make 20+ HP with a stock style carb and 22+ HP with a slide type carb at 6000 rpms. These parts will allow the engine to rev higher, but keep in mind these "big block" engines for what you are doing should stay under 7000 rpms. The flywheel nd connecting rod are both good to 10,000 rpms