D-Ports X Oval ports / Help please
 

Newcomer, if this was discussed before, can you guys please point me out.

This is my engine - Type1
1914 running alcohol, 13:1 CR
heads are currently 40X35 minor P&P
W110 (284) with 1,25 rockers
Dual Weber 44 (F3 - 200mains/210air/85idles/250 needles, again alcohol).

The engine is strong, but runs out of breath at 6000 (even a bit before).

My plan is to step up to a W140 (maybe an FK something)
Bump compression to as much as I can, but no more than 14:1
Step up to 42 intake valves (keep the 35,5)
Further port the heads, unshrould and 3 angle job.

Goal:

My goal is around 170hp and 7500rpm

QUestions:

Should I go with D ports or Oval? What are the advantages and disadvantages?

Cam selection? Does that sound ok?

Any further suggestions?

Thanks,

c'mon guys, where is the help?

Any input is very helpful.

Regards, Marcelo