Elmo30086@gmail.com

Interesting conversions.

Elmo30086@gmail.com

I personally love the sound of an high revving V-8

redass02gt

You could also run around saying an 8-cylinder motor has been around forever. But that would be ridiculous. That cadillac v8 wasn't spinning at 8250rpm and spitting out over 520hp from a 5.2 liter N/A motor. The technology is in the execution, and you know there's a hell of a lot of technology in the manufacturing aspect if Ford is making this engine for a $60,000 car.

http://articles.sae.org/13709/
http://www.edmunds.com/ford/mustang/...voodoo-v8.html

Elmo30086@gmail.com

The Gt350 are direct injection correct? surprise to took the automobile industry years to put this into play. Boats have been doing it for years

jz78817

Nope.

Boats had to, at least on the two strokes, otherwise they're way too dirty.

Mr. D

I still wonder if the Coyote with the stronger pistons, rods, crank, etc. supercharged for higher RPM's wouldn't be a hell of an engine in a Mustang. I might reappear in a Shelby. Having said that, obviously the Flat Plane Crank must be the best engine for the GT 350, but I'm impressed with the Coyote for street use!

I'm sorry, but to my "Old Guy, Old School" ears the Coyote has a much better sound than the Flat Plane Crank, but that's just individual taste! If I win the Lotto, I'll get one of each... but I'd have to start playing the Lotto I guess!

jz78817

the driver for safe upper RPM limit is peak piston speed, which is determined by the ratio of the connecting rod length to the radius of the circle drawn by its rod journal. You want to keep your peak piston speeds below a certain number (can't remember what it is) or else bad things start to happen. at 5.2 liters the Voodoo is probably pretty close to its limit with an 8250 rpm redline; it's probably got a little bit of margin but not much more.

Formula 1 V8s got up to 19,000 rpm by being 1) 2.4 liters, and 2) using a long conrod and short stroke design.

Elmo30086@gmail.com

Thats not entirely true. Formula 1 motors don't have valve springs to obtain 19,000 rpms they use pneumatic valves.

Elmo30086@gmail.com

I've heard some guys using billet oil pump gears with a steel backing plate to obtain higher rpms.

Mr. D

Interesting post jz78817! I used to build small block chevys for classic cars. I found the whole deal on those "Old crude engines" was in doing the heads perfectly... sparing nothing. That extra care with all the air, fuel & spark stuff right & a good balanced engine would hit much higher RPM's even with hydraulic valves. Too many small block chevy guys would cheap out on the heads reusing springs & values etc. to save a buck, & wonder why they didn't get a screaming little engine! Now that size engine gets twice the power per cubic inch! Who woulda thunk it back in the days of '57 Chevy's! What was that Ford secretaries' car they put on a Falcon frame in '65? I can't remember what that was called! A horsey or pony or something? Some guy name Shelby came along & saved it from the secretaries!