Sonny Leonard Developing 1005 CID Engine

[Buns]

Can't wait to see this monster!

SONNY LEONARD TOPS 1000 CID WITH NEW ENGINE

 

[Larry]

Jesus what a monster !

 

[Buns]

With a 70mm cam tunnel!

These aren't the Sonny's engine but just for reference.

 

[sdwarf36]

Here is the new Chevy cup motor. Look how big the cam size is compared to the mains!

 

[Buns]

Crazy! Big cams are the name of the game.

 

[Toejam]

What is the Stroke on this beast? I imagine it's a 5.30 Bore right?

 

[Buns]

I'm curious about the stroke, as well.

I've heard 5.4 on this monster.

 

[Cliff Ricci]

A 5.4" bore and a 5.5" stroke gets you 1008 cubes

Thats a wholelotta rotating mass........

 

[sdwarf36]

So that would make it about a 5.440 bore. Guess it must be a larger bore spacing motor.
The piston speed will be crazy!

 

[twostep]

I would think friction and pumping losses that occur with such huge engines would outweigh any gain from the extra cubic inches. Looks like someone's developed a workaround.

It'd be interesting to see the torque curve....