[stoney 81ta]

I got a 72 350sbc casting numbers block 3970014 with 3974873x heads.What is the hp ratings and are these heads good.Thanks all in advance.

 

[chevyman420]

go to www.mortec.com

 

[stoney 81ta]

go to www.mortec.com

Been there at mortec what im lookin for is the hp ratings for the motor and if those heads are worth it.Thanks for your help

 

[74Ventura]

what is the number on the right hand(passenger side) deck just in front of the cylinder head?.That should be de-codable to what year,horsepower and possibly to what it was originally from...

 

[DoubleVision]

You need to look at the head casting numbers more closely, as there are no
3974873x castings that I can find online or in a book.