If your getting that far into the engine you need to at least by yourself a haynes or chiltons repair manual for the vehicle your working on because in some cases you need to replace the head bolts.
150 horsepower ,torque is unknown
The torque specification for the rocker arm bolts on a 1983 Ford 300 engine is typically around 20-25 ft-lbs (foot-pounds). It's important to follow a specific tightening sequence to ensure even pressure across the rocker arms. Always refer to the vehicle's service manual for the most accurate and detailed information.
I believe it is rated at 145 horsepower and 265 ft/lb torque
If this is the European Ford Focus Front hub nut torque is 300-332Nm.
The 352 V8 had 300 h.p. with 381 lb/ft of torque. The 430 V8 had 354 h.p. with 490 lb/ft of torque.
Torque for the 300 6 intake and exhaust manifolds is 28 to 32 foot pounds
3 valves per engine cylinder starting in 2004 on the 5.4 L V8 engine 300 horsepower / 365 ft-lbs torque
The Ford 300 engine, a 4.9-liter inline six-cylinder, typically produces around 150 to 170 horsepower, depending on the specific model and year. This engine was known for its durability and torque, making it popular in various Ford trucks and vans from the 1960s to the early 1990s. Its robust design allowed it to perform well in heavy-duty applications.
The 300 cubic inch 6 cylinder is a great engine and IMO one of the best truck engines ever built. It has tons of torque and was best suited for a truck application where pulling power was needed. It does not have lots of horsepower but has more torque than a 302 V8. Click the link for more information.
In the Kawasaki KLF 300 Service manual.
The 5.4L Triton V8 in the 2004-2008 Ford F-150s puts out 300 hp and 365 lb-ft of torque.
The 1996 Ford Mustang Cobra has a 4.6 Liter DOHC (Dual Overhead Camshaft) V8 engine. This engine is capable of producing 305 horsepower and 300 lb-ft of torque.