series I and series II ?

[mikedinthecity]

are there any differences between series one and series 2 blocks? supercharged or n/a ? anyone know if they will interchange?

 

[TheOtherNick]

I am 90% sure they will not interchange.

 

[Explicit_Spade]

I am 90% sure they will not interchange.

This.

Series II and III are interchangeable.

 

[dpzelenak]

since were on the topic, what about the heads?

 

[TheOtherNick]

Nope.

 

[2003 SSEi]

there are no similarities between the two except they are 231 CID and its a V6 configuration

 

[blueguy]

there are no similarities between the two except they are 231 CID and its a V6 configuration

This.

That and the fact the LC2 has some of the worst flowing GM heads in history

 

[TLSheff]

I have a S1 SC in my 94 bonnie... They are 100% different. Cylinders 1&3 are close together and 5 is further apart same for 2 is further from 4&6. The Series II made them evenly spaced. headers, intakes, superchargers, heads... nothing is alike between the S1 and the S2