Thanks Rhinoman. It's not off right now. I will look into it when I have the carb off to see if I can see down inside just to see how well it matches up. I don't know if there will be a veiw or not. I'll probably leave it alone for now. If it runs good once I finish doing what I plan on doing with the carb, I will leave it alone awhile longer.

I want to get fuel injection later anyways and maybe that will require porting. I want a performance head, cam, header etc. So it's kind of hard to decide just where to start.  In the meantime, maybe a whole engine will show up with everything already to go. Maybe one of the Reynolds ones I've seen here.

-Adam

I saw that the question, "do you have to alteter the gasket"
From all the porting i have seen, you lay the gasket over the ports, and the gasket is much bigger than the stock ports, you use layout die and somthing to etch a line around the gasket.  That is how big you are supposed to go on the size.

Amilla

One of those everyone is right questions....

I have spent the money on the dyno

Stock, Ported stock, Modified-unported, Modified-ported

I can say that Stock and ported and cleaned up you would probably never feel it in the seat of your pants, but our results showed about 3hp...depending on how bad you stuff matches stock will depend on actual results (not to mention actual quality of work)

I would agree I would not tear apart and engine to do it unless the engine is already apart and you have the time and the tools.

But once you start modifying the game changes...with multi carb intake, header, cam Ported was about 10hp (if memory serves) vs unported.

So if you are rebuilding and plan on mods down the road...do it while it's apart. If it runs good now and you plan no mods...don't waste the time and energy for something you won't feel.

Zag

you would be better off putting money into a header if all you are going to use is  a stock carb.but if you are putting a weber go ahead and do it. have swirrels on  the intake side as everyone has said and match the gaskets up but if you want to make power put your energy on the head by matching gaskets and again swirrels on the intake side and smooth exhaust side. if you just match the gaskaets up will make a little difference

Sounds like you're telling me that it's better to port and polish the head if I'm understanding you correctly. You also say that a header would be good with the stock carb. Wouldn't that throw the jetting on the carb off?

-Adam

My opinion, and it seems others, is that if the engine is currently running fine and there are no problems leave it alone and put your money into bolt-ons (header, aircleaner, speed reducing crank pulley). If you are going to rebuild it then it's worth the effort to do it right and do a full port and polish.

Like I said earlier, I don't think you could feel the difference of the porting and polishing on a stock engine, but if you are rebuilding anyway and add a header, intake mods and a cam it makes a much bigger difference.

Comes down to best value for time and money....if you are not overhauling then header etc gets you the best value.

Zaggy

Everyone knows that all real power comes from the head sure you can bolt on performance but if you want to really add power put bigger valves in it and have your head ported and polished.
Add an alum. intake for the amount of wieght you loose would make up for the power gained in porting a stock manifold you want a aftermarket carb as well with a header. So lets see 365.00 for a weber 150.00 for header and a manifold is probaply 185.00. Oh if you plan on being hard on it and it's a manual you'll need a centerforce df clutch thats about what 285.00 to 350.00 depending on where you buy it. It is a expensive sport or hobby when you think of it. I have to go finish my axles now I'm almost done brakes and lube and I'm ready to break it again you got ta luv it. 

Sounds like a plan. I better start up my secret savings account now. ("Sure honey, I got all this work done for under $100.00!")  Ha Ha!

-Adam