Which means?

 

Okay, i think im leaning toward a 350, as everyone seems to agree that they can be made faster, cheaper than the 305. I am confused on one more point however, I see one person says 305s are frowned upon because of their lack of aftermarket head supply, but another person suggests buying a 350 and adding 305 heads to it to gain more power, why would the 305 head be bad on a 305, but good on a 350?

 

305 heads can be ported, polished and bowl blended easily, and the combustion chambers are around 58cc--perfect to get a nice 9.5:1 compression ratio on your average 350.

Most 350 heads have huge 76cc chambers and you simply can't safely mill those down to a more useable size.

When you add a 1.94" intake valve you have an excellent flowing head, just as good as a Vortec head--all for maybe $400. You just can't beat that price/performance ratio.

Follow the instructions in the link at the end of my sig.

 

Todd....a few of us from 3rd gen are gonna swipe
you car in the spring and take it to Race City! hehe

 

Interest does seem intense

 

305 heads have a smaller diameter combustion chamber.

If put on a 350, you MIGHT lose horsepower instead of gaining it. I may be wrong though...

Here's why:

305 head, 3.750 chamber

350 head 3.95 chamber

The power you gain from the added Compression Ratio, you will lose in the combustion chamber diameter. 305 heads also have smaller intake & exhaust runners, and would need to be ported more. Their vavles are also smaller too, so it would be alot easier to just use a 350 head.

If you want, you can have 350 heads milled to 58cc. That would be your best option.

 

Milling 350 heads down to 58cc would be a real trick. It is too much to do without weakening the casting.

Chamber size is chamber size; it ain't gonna hurt anything just because it came from a 305. The ports are easy to resize, as it is to have 1.94" intake valves installed.

You are NOT going to lose hp