I gave my GM 4.88's (in a non p-case, but supposedly an original '60 center section) hell with a mild 468, 10.5" slicks, 2800 stall for several years in the 1/8 mile and on the street....it never broke. I finally retired it for a spooled 12 bolt. That chunk might last you a long time. That 327 will love that gear too.