Quote:
Originally Posted by kevins2
Progress with the engine. First dyno run yesterday, here's a short clip:
Kevin's FE 427 side-oiler dyno run - YouTube
The vacuum secondaries weren't opening, so this run was essentially with a 2 barrel carb. Builder is picking up a spring kit to install a lighter spring. Without the secondaries, it generated 460 hp and 420 ft.lbs. torque, so already met my ask of at least 450 hp. Not sure how much the numbers will change with the secondaries working, but will find out today. |
Nice. Put in the back of your mind that if you put a lighter secondary spring in to dyno tune it without the typical restrictive Cobra air cleaner in place, then when you put the engine in the car, with the air cleaner, you may now have a bog, or hesitation, off the line because the secondaries are now opening too soon. If so, go up to a stiffer spring. Don't dwell on that point now, just tuck it away in case you need it.