John Milner
Member
Are the stock rods strong enough to live safely in a 409 engine that will make 400 horsepower or under? My stock rods are in good shape. I had intentions to have ARP bolts added and have the rods resized before I put the engine back together. I won't be drag racing the engine or spinning it over 5,500 rpm or so. I suspect it will have close to 400 horsepower after I get it finished.