Matt B wrote:
Cool, I figured it was something along those lines. I hadn't really considered the F series until I saw that some guy named Adam Jabaay (sp?) (who was the leadership in a challenge team) also built a stupid fast, crazy cheap EF chassis with a boosted F motor.
Still curious about what's different about the F block vs. the H block if you're just going to use the H head anyway? Forgive me, as I'm really only familiar with the B-series.
The F23 in particular has a slightly smaller bore, and a longer stroke than the H equivalent (H23).
H-series also use FRM sleeves, F series use cast iron sleeves.
It mostly becomes a moot point once you do an all out build, but the F-series stock sleeves are WAY stronger than the H sleeves.