[ss2haul]

are latter model lt1 aluminum heads a direct bolt on to a 1970 350 block

 

[dadeo-3]

What is the casting number and year of the heads.
I have a set that do NOT fit a 1970 350 block.

 

[BillK]

ss,
The LT1 heads will bolt on, but they will not work unless you weld up some cooling passages and add some other ones. They are designed for the reverse cooling system on the LT1's.

 

[novaderrik]

ss,
The LT1 heads will bolt on, but they will not work unless you weld up some cooling passages and add some other ones. They are designed for the reverse cooling system on the LT1's.

in other words, no. once you get the work done to make them work, you could have bought a nice set of aftermarket heads that make more power.

 

[cv67]

as the others said dont bother. Dont flow for beans unless you work the daylights out of them either.