big small block

[blazin_blazer]

what is the combination of parts people are using to build a small block with 427 cubic inches? i think i want to build me a mild version of this engine. as in compression to run pump fuel and cam that has fair/slightly rough idle.

 

[Inu-Hanyou1776]

Well, to start off with, you need to get the block to swallow a 4.00-inch stroke crank (not sure who makes small-block cranks this big) and that means grinding the bottom of the cylinders, the sides of the pan rails, and probably a few other places for connecting rod clearance, and then the cylinders have to be bored out to 4.125-inches. That's all I can say for the moment, as I have not read that much about building small-blocks this big.

 

[SUBFAN]

About the same thing as turning a 350 into a 383, except with starting with a 400 block....

http://strokermotor.com/

I can give you a few more sources for info later tonight....

 

[1979jimmy350]

To make a small block that big you are probley going to have to use a after market block. The after market blocks allow for a much larger pistion and crank then a stock block. The largest i have heard of for a small block is 472 Cubic inches

 

[sandawgk5]

Get a block from world castings they make a 427 small block as well as a 454 small block

Ira

 

[jhellwig]

Jegs sells the blocks.

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=4158&prmenbr=361

Just under 2 grand.

The also have short block assemblies. 415 427 454

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=269496&prmenbr=361

Those are under 5 grand.

And there is the fully assembled 415 and 427.

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=479274&prmenbr=361

Those are 8 to 10 grand.


I wounder how dificult those would be to keep cool.