I'm no expert on this but I just went through this on my test stand. (Mine is big block.) I had a 143 tooth flywheel and a 10-1/2" bellhousing but that flywheel is for a 11" clutch. (I think they use the same starter.) So I got a 10-1/2" flywheel. That worked with my bellhousing.


2011 Drag Pak Challenger