The 305 is gone.

I'm building 355 TPI w/
LT4 HOT cam,
Silv-o-lite KB hypereutectic pistons (no 106),
edelbrock TES,
Dynomax 3",
52mm TB,
Haltech ECU,
30 lbs SVO:s,
stock ported iron heads w/Manley street(E) race(I) valves,
3-angel valve job,
Accel siamised runners,
stock ported manifold,
siamised plenum
MSD 6AL
no cat, egr, ac
etc.

Can't afford Al-heads for now! Piston to deck is measured 0,57mm. With stock victor reintz head gasget the 'guench' will be about 1,5 mm - too much?? If I reduce it, the CR will be too much!

CR is already pushing the limits - 10.5, but i'll be using 95 or 98 gasolino.. What's the CR limit with 98?

:hail:

 

10.5 to one is rather alot on cast iron heads but workable with timing adjustments. with 98 octane your safe to about 11 to 11.5 to one with cast iron heads.