8k rpm ...
O.K. My 340 I built in 1977 and on a major budget just out of high school. I had been collecting 340 parts and had a lot of low mileage parts. I had a perfect std bore 69 block, a perfect crank, and with the help of a friend that was a engineer at Chrysler and a racer I put together a nice 340. It had full groove clevite micro babbit mains, micro babbit rod bearings, stock crank, my buddy did the rods opened up the big end so it would have .0035 clearance then cut .001 off the caps, we had .0025 top to bottom on the rod and .0035 on the sides. Now you can just buy bearings with more side clearance but not back then. 10.5 :1 pistons std bore, 400 grit finish, moly rings .040 + 5 file fit Chevy rings, 1/3 the price of mopar rings. X heads pocket ported with a full radius seats, my buddy made his own stones on a fixture he made at Chrysler. Stock 2.02 1.60 valves, dual valve springs, MP cam .572 .296 mechanical with crane ductile rockers, Hooker 1 7/8 super comp headers, MP mechanical 6 pack carbs. Ran 11.84 114.9 MPH in a 64 Barracuda shifting at 7600 RPM
727 Turbo Action VB, 4200 stall TA converter, 5:13 Dana 60 w/spool
O.K. My 340 I built in 1977 and on a major budget just out of high school. I had been collecting 340 parts and had a lot of low mileage parts. I had a perfect std bore 69 block, a perfect crank, and with the help of a friend that was a engineer at Chrysler and a racer I put together a nice 340. It had full groove clevite micro babbit mains, micro babbit rod bearings, stock crank, my buddy did the rods opened up the big end so it would have .0035 clearance then cut .001 off the caps, we had .0025 top to bottom on the rod and .0035 on the sides. Now you can just buy bearings with more side clearance but not back then. 10.5 :1 pistons std bore, 400 grit finish, moly rings .040 + 5 file fit Chevy rings, 1/3 the price of mopar rings. X heads pocket ported with a full radius seats, my buddy made his own stones on a fixture he made at Chrysler. Stock 2.02 1.60 valves, dual valve springs, MP cam .572 .296 mechanical with crane ductile rockers, Hooker 1 7/8 super comp headers, MP mechanical 6 pack carbs. Ran 11.84 114.9 MPH in a 64 Barracuda shifting at 7600 RPM
727 Turbo Action VB, 4200 stall TA converter, 5:13 Dana 60 w/spool