Discussion in 'The Garage' started by BlitzK5, Sep 28, 2005.
What is the powerband for a 454
A little more info on the particular 454 you're talking about would help us narrow it down. The 454 in my Caprice pulls nice and strong when I shift it at 7200.
Think of a plateau, wide and flat. Stock truck 454's hit their torque peak at around 1,600 RPM and and stay near the peak for quite a ways up the RPM range.
Mine is pretty much stock, and it falls on it's face at about 4500 rpm. The torque is there pretty much from an idle. I have a 79 454 out of a 1 ton truck, so it's got the peanut port heads. There not much for power, but pretty decent for low end torque. It seems to me like a stock 454 of the era that I have is similar to a diesel engine.
4500 is about all you'll get out of a stocker. Between the peanut ports, the factory cam that barely opens the valves, and old, worn out valve springs, it just won't do much. You can really wake it up with a better cam and new valve springs to match the cam. Different heads will really make some serious power, but then you're getting into a much larger and more expensive project...
Alright everyone thanks for the help, iIwas under the asumption that it was between 2100 - 2600rpm
are you sure of the port? i have a 78 with large port. might want to check over. if so get some good heads and good 4x4 or lowend tourqe cam. also any time you change and go bigger on the cam in a bbc change the springs.
Separate names with a comma.