What clutch are you using on your early 273

IMO.
9- 9.5 clutch disc is ok around town.
Any Real HP wont last at all.
I just finished my small block magnum swap with small clutch stuff because I had it
New in stock.

I just wanted to get it running on the road.
And not sure of a sale.
But I guarantee I drive it. Might get 50 miles....lol