Almost no difference in the heads. The ports will be fully ported out and the stock differences in the head, and how minor they are, will disapear. A full porting job will get them to flow those numbers.
A comp 3 angle valve job is work done on the seat area where the valve rests. ok, that's what i thought.
I don't know the way your country rates octane. 12-1 in the states by the RM2 method is good for a 10-1 iron head and a decent sized street/strip cam. There are variables to this and I'm not getting into them because it would be 2 pages long and generate more questions that would take up another 3 pages.
premium pump gas here in the US is 92-93 octane. most anything higher than that has to be bought at the track or a supplier of some kind, though there are exceptions.
If you don't think the octane you have now is good enuff for a 12-1, then this build isn't for you now is it?
no, you're right. i didn't see the compression ratio on first glance. my fault.
A strip Dom and 770 Holley is good for a screaming engine.
by "screaming" engine, you mean a high RPM engine, running something more sturdy than the stock bottom end? or is this good for a build WITH the stock bottom end?
Typical full head porting prices are about $2000 fully done. This will include new valves and set up with surplied springs of the cam being used.
the Eddie heads aren't that expensive- would these heads flow similar to the aluminum eddies, or would they flow more? i have also heard that i can up my compression with pump gas by a full point with aluminum, which would make for a SAFER 11:1 compression engine. my friend built a 318 running 11:1 on pump gas, and it ran very nicely with the aluminum heads.
Your better off going with the last package for a street brute and a low enuff commpression ratio to run pump gas.
which is the last package we're talking about here? package six that i mentioned?
Get wide sticky tires, you'll need them.
no doubt i will. thinking about 275s-some radials for the street and some sticky slicks for the track.
For a simple build and pump gas, package 5 with the Holley is your best bet.
i guess i'm sortof mixing and matching here, making my own "package." i don't like the idea of having something just like everyone else's.
