New 650 EFI from Young Performance

[YoungPerformance]

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

 

[YoungPerformance]

Dyno pull. Sorry for the poor quality. I forgot the good camara.

http://www.youtube.com/watch?v=K6Q5-KeUBRU

 

[Griswald]

Why the Holley intake over Dart? Looks like quite a bit of work to it.

 

[Bobcat]

looks good,how about a ballpark figure on price ?

 

[Audiofn]

Don't forget Bobcat needs you to convert to Pesso's

 

[Ratickle]

I used the Holley intake on my 509 because of the design and they are drilled for the Cutler/Holley injector system, plus accept the 2000CFM throttle body.

Used the same thing when we did the 540's with the Haltech injection systems. I assume it's the same reason, but am interested in the answer.

 

[YoungPerformance]

Why the Holley intake over Dart? Looks like quite a bit of work to it.

That intake is basically a knock off of a Dart single plane. It has the injector bungs casted into the intake, so I don't have to weld them in. The throttle body has the same mounting flange as a Dominator.

looks good,how about a ballpark figure on price ?

100% Complete and ready to drop in your boat with exhaust(CMI E-tops) wiring, sending units, 10 pin Merc plug, motor mounts, bell housing and coupler, etc. is $36,500 (for this particular set up) with a one year warranty. It can be painted any custom color of your choice. The only thing that is not included is the tail pipes, since they are somewhat boat specific. If you can use standard Bravo tail pipes then they run about $750.
Not sure, but I think that is like 84 million peso's.:sifone:
Eddie

 

[Knot 4 Me]

Looks good Eddie!!!

 

[tunnelvision69]

sweet!!!

 

[Bobcat]

muy gracias:sifone:

 

[YoungPerformance]

yeah....greasy ass to you too.:biggrinjester:

Thanks everyone

 

[YoungPerformance]

Here are a few more pics of it all finished up and ready to install without all of the dyno wiring. Enjoy
Thanks, Eddie.

 

[YoungPerformance]

few more.

 

[MattBMiller]

Nice setup!

 

[YoungPerformance]

Thanks Matt.

 

[Master Wrench]

WOW!!! Looks great as usual Eddie! Keep up the great work.

 

[imco offshore]

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

do you think the torque will go up at all with 555 cuci ? that looks great now

 

[Offshoredrillin]

my 500/502 efi's are at 670 lbs of tq with afr 325's..best head out there in my opinion

 

[Airpacker]

Eddy, they look sweet. Almost a shame to let those breathers puke yukky schmegma all over the valve covers no? Needs a puke tank set up to keep em perty.

Nice numbers BTW.

 

[MikeyFIN]

I don´t think Eddies engines blow-by that much you´re used to

the engine look good and sober on them pics and the heads are my choice too...