YoungPerformance
SO Tech Expert
Here are a few shots and a quick dyno vid of a new 650 EFI that I just finished. I have been playing around with some different combos in the never ending quest for more power. This engine has a set of AFR 335 cnc heads. This is the first time that I used them, and I have to say that I am pleased. My 650 typically makes 660-670 hp. This one made 701 hp (at 5800 rpm) with only 9.4:1 compression. I usually run a little more than that. With a little tweaking to the combo, I think that it will make 720-725 hp. It has the flatest torque curve of any NA engine I have ever built. It made a peak of 650 ft lbs at 5200 rpm(which is a little high), but it made only 30 ft lbs less at 4000 rpm and still made 640 ft lbs at 5700 rpm. It never seemed to drop off after peak. It only lost 10 ft lbs over the next 600 rpm after peak torque.
I think with a few changes to the heads and cam it will be a nice package capable of making an honest 700+ hp. It will be a good alternative to my 750 efi, which is 598 ci. This one is quite a bit cheaper to build at only 540 ci. May take the next one to 555 ci. It's never enough.
Thanks for looking. Enjoy.
Eddie
I think with a few changes to the heads and cam it will be a nice package capable of making an honest 700+ hp. It will be a good alternative to my 750 efi, which is 598 ci. This one is quite a bit cheaper to build at only 540 ci. May take the next one to 555 ci. It's never enough.
Thanks for looking. Enjoy.
Eddie