What kind of HP are you 200 guy's getting?

[addo]

It's moderately possible, but you do need a mill. The flange plate has to either jump the exhaust centre pair or seal their port top.

It's been pretty well demonstrated that one limiting factor in performance "log" heads is the intake plenum; beyond the kind of valve upsizes offered by CI or SI Industries there is little benefit.

 

[Anlushac11]

Not to mention high swirl closed chambers and ports that can flow 223cfm with porting.

You take a log intake and modify it and add a adapter plate and use a custom intake but its still a log head.

No how matter how much you dress it up and make it look pretty a pig is still a pig.

 

[FALCONAROUND]

So you're saying that my log head is gonna be a uncomparable to ANY other 200 CI setup, unless I mill off the entire log?

 

[Anlushac11]

8)

Im saying the log will never be near as good as the Classic Inlines aluminum head. It just cant compete with 50 years of technological advances.

I cannot afford the Aluminum head so Im gonna make the baddest meanest modified log head this side of the Mississippi.

First is to get rid of the log or use itas base to add something better.

Best numbers I have seen was 170cfm on intake side. If we can get any closer to 200 it will be sayin something.

 

[FALCONAROUND]

8)

Im saying the log will never be near as good as the Classic Inlines aluminum head. It just cant compete with 50 years of technological advances.

I cannot afford the Aluminum head so Im gonna make the baddest meanest modified log head this side of the Mississippi.

First is to get rid of the log or use itas base to add something better.

Best numbers I have seen was 170cfm on intake side. If we can get any closer to 200 it will be sayin something.

Mine is gonna be bigger AND badder Good luck!

 

[Falcon Ranch]

So far I have sunk a lot of money in my 200 with a 60 over bore...I bought this truck with this engine already rebuilt, but the PO had a crappy head on it...so I bought a good used 72 head and had it completely gone through...I too am trying to achieve the 200 mark and believe that I have gone past that goal...my 200 is a 4 bolt main but am not worried...if you look at the Chevy stovebolt 6 those engines are pushing over 500hp with 4 bolt mains...so i am not worried cuz I have seen my crank and it's as thick as my arm.

I just need to figure out this carb problem I am having.

 

[FALCONAROUND]

You have a 4 bolt main???

Don't you mean 7 main bearing crank? What is this you're talking about?

 

[LaGrasta]

You have a 4 bolt main???

Don't you mean 7 main bearing crank? What is this you're talking about?

early 200s had only 4 mains like the 144s and 170s. These are much more rare as 9 out of 10 200s have 7 mains.

 

[wallaka]

You have a 4 bolt main???

Don't you mean 7 main bearing crank? What is this you're talking about?

early 200s had only 4 mains like the 144s and 170s. These are much more rare as 9 out of 10 200s have 7 mains.

I'd say more like 9999/10000 200s had 7 mains, with the relative production numbers.

 

[FALCONAROUND]

Yucky! Why would I want such a weak bottom end?

Isn't the 7 main bearing block stronger???

 

[Anlushac11]

Yucky! Why would I want such a weak bottom end?

Isn't the 7 main bearing block stronger???

Yes the seven main is stronger but for some people its a run with what ya got sort of thing.

People in certain parts of the US have reported a shortage of spare inline six's lying around so they have to use whats available.

With the log head the engine wont rev much past 4500rpm so its not much of a issue til you want to run over 5500-6000rpm.

 

[FALCONAROUND]

My log head engine will have no problem whatsoever revvvvvving over 7,500 rpm's When I'm done that is...