Econo Modified

[SSDiv6]

I would love to see such class be developed; nevertheless, even if there if a spec cylinder head, I believe NHRA would not be interested monitoring them.

The reason I believe so, I have been told by a few people that NHRA is seriously considering allowing any cast iron cylinder head in SS/CS class.

If this rule change takes effect, Chevy products will rule the class with the current aftermarket cast iron offerings such as the RHS Pro Action 14 degree cylinder heads, offering small chambers, big valves and the capability of the intake ports being ported to 300cc's of volume.

The current utilized Ford N351 and Mopar W-2 heads cannot compete against the Chevy engine offerings and there are no equivalent aftermarket cast iron heads either for the Ford and Mopar applications.

[randy wilson]

I don't believe they will allow the RHS head in, but who knows. RHS quit making them anyway in cast iron. But that goes back to my point. Why spend $10,000 on an induction system, just to have it outdated at a whim. You're making my point for me. There's always a head from one manufacturer, going back and forth from manufacturers, that has an advantage. The Brodix head fixes that. Why is that so hard for them to understand? What's the valve angle on the Ford head, and W2?

[SSDiv6]

Originally Posted by randy wilson

I don't believe they will allow the RHS head in, but who knows. RHS quit making them anyway in cast iron. But that goes back to my point. Why spend $10,000 on an induction system, just to have it outdated at a whim. You're making my point for me. There's always a head from one manufacturer, going back and forth from manufacturers, that has an advantage. The Brodix head fixes that. Why is that so hard for them to understand? What's the valve angle on the Ford head, and W2?

Randy,

The cylinder heads are still available:

http://www.racingjunk.com/Heads/1851...-400-CFM-.html

The Ford N351 cylinder head has a 10 degree valve angle; the Mopar W2 comes in two versions; 15 and 18 degree.

[Adger Smith]

Randy,
To make your point about the Spec head... About a year ago I was at Brodix talking to Jeff and Mark about all the heads they produce. If I remember right Jeff said they had 54 different heads on their "Spec" list. They build them and provide all the checking fixtures to the associations or tracks. For them "Spec" is a big part of their business. I know they do a good job trying to provide equal heads because a few years ago I bought several sets of ASCS Spec heads that failed QC. They didn't flow the spec, they were high. I can't see why you pick a set of BB and Ford and SBC & Mopar to all make the same HP per Cu in and have a spec head for all.
The Brodix spec head will work...

[randy wilson]

Ya, you can buy the RHS head on different sites, but they have quit casting them. I did one 358 for a tractor puller friend, and they are quite a powerful head. I don't think they're anywhere near the GM 15 degree, but only messed with one set. Now, you're beginning to see the frustration of running ANY class. Would be SO nice to never have to worry about the latest, greatest head again. Adger, I think it is possible to make a big block head in spec, if that's what you mean, and have it allowed. Brodix ain't a bunch of idiots. Up at Knoxville they have a rep every year at the 360 nationals, and one year they had him examine the winners head, and he said, and I quote, "Hell, Ray Charles could see these heads are illegal."

[Ron E]

Originally Posted by randy wilson

What's the valve angle on the Ford head, and W2?

The 351N is 10°. W2's are 18°. There were some 15° W2's made,but are extremely rare.

oops, I missed your reply SSDiv6. But, on the possible head rule changes allowing a 14° Pro Action head in SS/CS. If the NHRA wants it to become a 1 brand class, that will do it.

[randy wilson]

Well, if true, all GM cars in SS\CS prepare to change heads. For a small update price of, say $13,000 to $18,000 dollars with intakes, heads, valves, pistons, cams, etc. And then get ready for the next step. Allowing aluminum heads in. Then for the small fee of $15,000 you can compete again! Ain't it grand! Should work out REAL GOOD!!!

[FINESPLINE]

Originally Posted by randy wilson

Well, if true, all GM cars in SS\CS prepare to change heads. For a small update price of, say $13,000 to $18,000 dollars with intakes, heads, valves, pistons, cams, etc. And then get ready for the next step. Allowing aluminum heads in. Then for the small fee of $15,000 you can compete again! Ain't it grand! Should work out REAL GOOD!!!

Makes you want to think about a spec engine with manual trans. Pick the body style and lbs/ci . EVERYONE who drives a stick knows the answer is in the can.

[FINESPLINE]

Randy, If you really would like to keep it OLD SCHOOL and keep the word econo in this class, keep the the factory valve angles ( ie sbc 23 degree ). Inline wedge head only.

[randy wilson]

ALL spec heads are factory valve angle. Chevy, 23 degree, Ford, 20 degree, Mopar, 18 degree. Already been handled. You do know we are saying a single disc clutch, min. diameter at 10.5 inch, and NO computers. The right clutch, pressure plate, and fylwheel will be the key. There would be no counter wts. allowed. Clutch would be required to be engaged on ALL shifts. Just saying.