3 inch stroke in a 472 block

[Roy Heisenberg]

Howdy:

For higher RPM, and lower cylinder wall loading under boost, could a crank with a 3 inch stroke make a Caddy run smooth?

It looks like a billet crank will do the trick, and this thing will rev like the 1973 stock block that Smokey ran at Indy ?

Here is the high rev plan:

Bore = 4.360
Stroke = 3.0
Twin turbo 72mm units
90 inches of boost on Methanol, and let ‘er eat...

Thoughts,
Roy

 

[Roy Heisenberg]

Howdy:

For higher RPM, and lower cylinder wall loading under boost, could a crank with a 3 inch stroke make a Caddy run smooth?

It looks like a billet crank will do the trick, and this thing will rev like the 1973 stock block that Smokey ran at Indy ?

Here is the high rev plan:

Bore = 4.360
Stroke = 3.0
Twin turbo 72mm units
90 inches of boost on Methanol, and let ‘er eat...

Thoughts,
Roy

So, the cubic inches turn out to be 358 CID, and it has the stroke of a 302 Z-28. Could it make 3 HP per cubic inch???

If so, this Big block Caddy makes 1075 HP...

 

[Red98422]

I am personally going with a single, half the pluming half the fab.

As for the short stroke and other stuff I’ll leave that to others to play with I’m only shooting for 750ish HP on boost so I wouldn’t see a benifit personally for my goals

 

[Roy Heisenberg]

Roger that and a big 10-4.

I say any Turbo is a good Turbo as long as the math works out.

Thanks for taking the survey,
Roy

 

[El Diablo]

That would be an exciting build if you see it through. Of course you would still need to do all the bulletproofing to make it last more than a few seconds at that rpm.

Does methanol have a faster flame speed than race gasoline?

 

[MadMax]

Roy
Depends what you want to do. If starting from an idle to get fast revs, then go with two turbos with big waste gates. If you can get a single turbo spooled up before take off then that should work. The diesel pullers now run three turbos in SERIES with 150+ psi boost.

 

[Roy Heisenberg]

That would be an exciting build if you see it through. Of course you would still need to do all the bulletproofing to make it last more than a few seconds at that rpm.

Does methanol have a faster flame speed than race gasoline?

Howdy,

The answer is yes. Methanol burns faster than race gas.

Here is a cool link on why Meth is the best race fuel....
https://www.fuelfreedom.org/hot-rod-explains-race-car-drivers-love-methanol/