I need a quickie primer on Z-11 heads. I recall discussing this with Jack Gibbs a while back, but I got confused. Did some of the castings vary over time? Is there a "more desirable" Z-11 head as opposed to one possibly cast for "replacement"? Are there different casting numbers? What are the correct casting numbers for these type of heads? What does one look for when examining said heads?
Ditto for the two piece intakes.
Inquiring minds want to know .
Cheers,
TomK
Ditto for the two piece intakes.
Inquiring minds want to know .
Cheers,
TomK