which block is stronger

[boostx]

the production 3.8 or the production 4.1
and why
what are the advantages of one or the other

 

[Intercooler]

The 3.8 block. A search will give you all your answers. Basically deck thickness, head bolt anchor, lifter valley, block webbing.

 

[kenmosher]

http://www.gnttype.org/techarea/pictureguides/blocks/blockguide.html

 

[boostx]

thanks