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• 71 Mach1 351c
• E/SA 11.89-110 mph
• F/SA 11.76-111 mph

On the line across from your body style you will see some numbers under each of the engine types. Those numbers represent the shipping weight of the car divided by the NHRA horsepower factor. If you look in an NHRA rule book, at the beginning of the Stock section is a list of the classes and the minimum LBS/hp for each class. Find where the number for your car sits on that list and that is the class your car will fit in. You are allowed to remove enough weight from the advertised shipping weight to move your car up to the class limit or you can add enough weight to move down to the next lower class.

Confused? Most people are by this time.

on the classification page you first go to they explain all this. On the left side of the page is a link that goes into even more detail about the class determination. You also have to consider an allowance of 170 lbs for driver weight.

Also on the left side of that first page is a link that takes you to the engine specifications page. There you will find all of the important engine specifications for a legal stock eliminator engine.

Also on the left side of that initial page are links for allowable pistons and rods that you can substitute for the factory stuff.

Enjoy your reading and if you go ahead I know you will enjoy the racing.

Alex has a rare Bogus but legal carburetor that I think is for 68 302's. Ask him about it, It may be just for Cougars, I'm not sure.

In the case of your '68, you'd have to choose between several variations of the following combinations:
200 6 cyl, 289, 302, 390, 427, and 428
You could add/change some trim around, and claim it as a '67 also, if you were so inclined.

NHRA places their own horsepower rating to them as they see fit, so some combinations are better performers than others, since your class designation and index (performance threshold by which you will be judged) are determined by OEM shipping weight divided horsepower rating.

In Stock, you can't port, polish, or use oversize valves. The camshaft must be stock lift. The carb and intake can't be unmodified and or changed, unless NHRA lists a replacement. The same goes for the rest of the pieces.

As for the drivetrain, original (type) transmission case must be used, and same number of gears, any converter, and Ford manufactured car rearend with gear ratio of your choice. NHRA allows a maximum of a 30x9 tire, with the stock type suspension.

There are a million different scenarios of what role the replacement or superceded parts play with each combination, so once you've decided on one, it would then be easier to address the finer details.

12.50 lb/hp class as hardtop or fastback
J/S Index = 12.65 (Stick)
J/SA Index = 12.75 (Auto)

Min weight = 12.50(p/w) x 225(hp) + 170 (NHRA fixed driver weight) = 2980#

Well, the engine is pretty much done. Just getting the valvetrain geometry straightened out. You know all about what I'm talking about if you've raced a 2300.

Unfortunately, my wife is out of work, and has been since last summer. It's really been slowing the racing program, nearly to a standstill.

They placed an NHRA points meet on my back doorstep for this year, so I certainly don't want to miss it!

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

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69 fairlane 351w 12.94@103mph before M&M.. after??
always in search of more HP and faster ET'S

Here is an article I started writing (but never finished) from about two years ago. This should help out. Some things have changed since I wrote them, and will correct them at the end.

"Very often, while in the pits at an NHRA or IHRA National or Divisional meet, I am asked "What do all the letters mean on these cars"? Well, the cars I am referring to are Stock and Super Stock Eliminator cars. I try to give a good description of what it means, without trying to confuse them. So, here in general, is an overview of just what makes up Class Racing cars.

We'll start with Super Stock Eliminator. S/S, as it is known for short, is made of several different sub-divisions. These include traditional S/S, SS/GT, SS/Modified, SS/Modified Compact, SS/modified Experimental, SS/Mod Truck, SS/GT Truck, SS/Modified Stock. I'll try to now break down each of these divisions.

A) Traditional S/S is for 1955 and newer automobiles (I can't say cars, since I know of one El Camino from the Northwest), foreign or domestic, factory built. A minimum of 50 units must have been built. There are 32 sub-classes in S/S. SS/A (stick) and SS/AA (automatic) through SS/P and SS/PA. The cars fit in a certain class, based on factory shipping weight, divided by advertised horsepower. This is the number used to determine what class a car "fits" in. SS/A, the top class, is comprised of cars that "break" at 6.00 to 6.49. If your cars shipping weight divided by horsepower falls in this range, this is what class your car will run. The classes run in .5 (half) pound breaks down to SS/I and SS/IA, then it is 1 (one) pound breaks down to SS/P and SS/PA. If the car breaks at 9.75, it will run SS/H (stick) or SS/HA (auto trans). Now, after you have arrived at the number to determine what class you fit, you take that number and multiply it by the NHRA horsepower rating. Then, you ad 170 pounds, for the driver. This number is the minimum weight the car can cross the scales at. For an example:

Say you have a 1969 Camaro, with a small block 327, which is factory rated at 250 HP. The factory shipping weight is 3200* (using 3200 just as an example) pounds. Take 3200, divide it by 250. The number you get is 12.8. Upon checking your NHRA Rulebook, you see it will fit into SS/K (manual trans) or SS/KA (automatic). NHRA rates many engines different from factory, to maintain equity in each class. This particular motor may have an NHRA rating of 260. So, take the 12.8 and multiply it by 260, and you get 3328. Now add 170 for the driver, and you get 3498. This is what you must cross the scales at. Every single car/motor combination is classified the same way. The best way to determine what your particular car/engine fits, visit NHRA's online classification guide at: http://www.nhra.com/tech_specs/classification/

B) SS/GT
Super Stock/GT cars are by far the most popular (as in quantity) in the overall S/S Eliminator. The general idea of SS/GT is similar to that of traditional S/S, except for a few differences:
1. SS/GT is reserved for 1980 and newer foreign and domestic 2 door sedans and convertibles only.
2. Front wheel drive cars are allowed to be converted to rear wheel drive, allowing all of Detroit's latest models to be showcased.
3. Corporate motors. Unlike traditional S/S, the mating of corporate motor/transmissions to cars are allowed. You may run a Chevy motor with a powerglide in a Pontiac, Oldsmobile or Buick. 8 cylinder motors only.

The classification is the same as in regular S/S. Weight divided by HP, multiplied by NHRA HP, and add 170 pounds. Classes run from GT/A and GT/AA (8.00 to 8.49) and run in .5 pound increments down to GT/M(A).

C) SS/GT Truck

Same rules apply here as in SS/GT, except it is for trucks only. 1990 and newer pickups, 1/2 ton maximum. 4 classes make up SS/GT Truck

D) SS/Modified Stock

One of the sub-classes absorbed into S/S from the defunct Modified Eliminator. These car-only classes are for 1967 and newer machines. FWD conversions permitted. There is one major difference between the rest of the classes and the ones outlined above. They are classified by weight-to-cubic inch, rather than weight-to-horsepower. The bigger the motor, the heavier the car. More engine modifications are allowed in these classes. SS/MS is limited to a single 4 barrel carb. Sticks and automatic cars run together, with a weight break given to automatic-equipped machines. SS/MS has 4 classes.

E) Super Stock/Truck Modified
Same as above, except for 1990 and newer 1/2 ton trucks. No Sport Utility Vehicles permitted. 4 classes of trucks from V-8's to V-6's.

F) Super Stock/Modified
Another sub-class from the former Modified Eliminator. These classes are also weight-to-cubic inch based. 7 classes or cars, and these are the fastest and quickest cars in all of S/S Eliminator. The SS/AM National Record is currently a brutal 8.28 at more than 160 mph. Classes may run dual 4 barrels, and more modifications are allowed here than in any other sub-class of S/S.

G) Super Stock/Modified Experimental
SS/MX is for more purpose built race cars. These are the only classes where full chassis, lexan and non-functioning windows are allowed. V-8's are not allowed in these 4 classes.
SS/DX allows for turbochargers, and the record is a blistering 8.33 at well over 150.

H) Super Stock/Modified Compact
Last but not least are the SS/MC classes. A variety of cars/motors are allowed in these classes. As the name suggests, smaller cars abound. However, I only know of about six cars in the entire country in these classes.

That is a (very) general overview of what makes up S/S. Next week, I will go further into some of the basics of S/S racing, with a complete list of classes, and their respective Indexes, how they race and qualify, and more specific details. If you have questions, feel free to e-mail the author. See you next time."

"*Part two in a series on how to better understand NHRA and IHRA Class Racing*

Last week, I broke down S/S Eliminator and it's various sub-divisions. This week, we will go further into this exciting class.

OK, so now you have your car built (to the strict specifications of the sanctioning bodies) and know what class it fits, and are ready to go racing. You load up and head out to the NHRA Divisional meet nearby to try your luck. But how exactly is S/S run?

Every class in Super/Stock must qualify, based off how far under it's respective class Index it runs. What is an Index? When first started, it was supposed to be a class average of everyone in that class in the country could run. Nowadays, most everyone can run well under their respective Index. All racers in S/S qualify no more than 128 cars. In some of the bigger races on the East Coast and Midwest, it's important to be able to run well under in order to make the show. After qualifying and time trials are completed, the ladder is established (just as in the Pro classes), and cars are paired up based on that. The concept of S/S racing is basically the same as bracket racing. The cars dial in (predict how quick they think they will go) and try to run that number. The closest one to their number without going faster wins, provided they have a better reaction time. You must dial in at or quicker than your class Index. Even if you can not run that fast. You may "dial under" as far as you want. The race is contested as a bracket race, with handicaps, dial ins and breakouts, in single-elimination tournament-style racing. It takes an awful lot of talent to win. As a result, many of the more successful Class racers are also world renowned for their bracket racing talent, both on a local, regional and National level. Cutting a light, and running close to your dial in is the name of the game, and it's not easy to do. The only time the "bracket" rule does not apply is when two identically classed cars race. In that case, it is run heads-up, no breakout, first-to-the-finish-line wins, just like the Pro's do. Lets say, for example, you have a SS/JA '69 Camaro 350. Should you race against a SS/AM car, you will dial your car in, as will your opponent. Should you, however, run up against another SS/JA, it's run just like Pro Stock or the Nitro Classes. Baddest car wins. Herein lies the attraction to many in Class Racing. The satisfaction of being the quickest in the country (or at least on the property that particular day) in their respective classes. At Divisional meets, National "Open" series and other designated meets, racers may attempt to set individual class records. This is the ultimate achievement to many. To have the quickest car in the country. Racers must first break the existing record and then back it up within 1% of that ET within the designated time frame. They must be torn down and pass legal certification to prove the legality of the car/motor/etc. When verified, they are the new class record holder. Another pinnacle of Class Racing is Class Elimination's. At designated National Events, Class Elims are held to determine the fastest in each class. All identically classed machines run each other heads-up no breakout to see who is the baddest. However, driving talent is still important, as often three to four cars are within a tenth, placing critical detail to driving ability as well as a fast racecar. Thus, the fastest car does not always win. Winners receive a trophy, signifying they were the Class Champion at that event.

So, in closing, S/S racing has something for everyone. For those who strive to be the fastest, and spend many hours fine tuning their cars for optimum performance, and who live for being the "baddest of the bad". Also for those who are not as fast but display considerable bracket racing skills, and constantly hone their driving prowess weekly at their local track. A select few fall into both categories, and next week I will showcase and introduce you to some of the best racers and cars that S/S has to offer. The bottom line is, no matter if you can run a tenth under your Index, or more than a second under, anyone can win at class racing with a combination of skill and luck. The two main reasons outlined above, and of the previous statement, S/S is a very popular class among the competitors. See you all next week."

"*Part three in a series to help better understand Class Racing*

This week, we will cover Stock Eliminator. It is basically the same as Super Stock, except all cars here are original, factory produced cars and trucks. No hybrids, corporate motors, FWD conversions, etc. They are for 1960 and newer cars and trucks. Classes run from A/S (stick) and A/SA (automatic) down to W/S and W/SA. The cars are classified the same as in S/S. Shipping weight divided by advertised (factory) horsepower. That number tells you what class it fits. Multiply that number by the NHRA rated horsepower, and add 170 pounds for driver to arrive at your minimum weight. There are 3 separate sub-classes within Stock Eliminator. Stock, Stock Truck, and Front Wheel Drive Stock.

1) Stock. Stock is for the traditional muscle cars. Everything is in these classes. The late model EFI cars also have an unignorable presence, especially the 5.0 Mustangs, 305 Camaros, and LT and LS-1's. Down in the lower classes, you will see the V-6, inline 6, and 4 cylinder powered machines. Basically, if it was built, you can run it in Stock. There must have been 500 units produced and showroom available to be permitted in Stock Eliminator. This disallows certain combinations, such as Hemi Barracuda's and Darts, Ford Thunderbolts, Hurst AMX's, and the like. Also, the lowest weight break is 8.00 pounds per horsepower, so anything with a weight/power ratio better than this can not run in Stock Eliminator.

2) Stock Truck. Reserved for 1980 and newer 1/2 ton maximum. Classes are from AT/S(A) through JT/S(A). A and B are for all wheel drive. C through J are for 2 wheel drive, and J is for four cylinders only.

3) Front Wheel Drive Stock. Is for 1978 and newer, 4 and 6 cylinder FWD cars only.

Stock is just that. You are very limited into what you can and can not do to the car, motor, etc. Much more so than Super Stock. The differences between the two we will discuss later. Stock is run the same way as Super Stock, in regards to dial-ins, breakouts, Class Elimination's, Record Runs, etc. Great racing, off the bottom bulb, flat hoods and 9 inch tires. Like the saying goes, my friends--"Stockers Are Way Cool!"

See you all next week. There, we will introduce you to some of the unique-to-themselves IHRA classes of Stock and Super Stock. Some of these cars you will not see anywhere but in IHRA. Until then, feel free to e-mail the author with any questions."

At the beginning of the 2003 season, NHRA changed the structure of Stock Eliminator, adding 22 new classes. They seperated EFI and carbureted cars. 22 new classes were created for 1986 and newer fuel injected cars, A/FI and A/FIA through K/FI and K/FIA. I personally frowned upon the decision, but oh well, adapt and overcome. Alex/Tony, the Capri and Mustang are what now, H/FIA's?

Also, a rule was added at the start of the 2002 season, allowing a combination to add enough weight (above the former 150 pound rule) to drop one class from it's natural one. A car that fit G/SA only could now run G and H/SA. I tried to keep my writing simple and non-complicated, although that is hard at times when explaining these eliminators. If anyone has any questions, feel free to e-mail me. Thanks.

Mike

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

B.D.

Dubz, that's a cool idea, thanks. I'd like to finish the story before I do anything like that though.

B.D.

*Part four in a series of helping newcomers understand Class Racing*

This week, we will cover the IHRA (International Hot Rod Association) classes of Stock and S/S. Their classes vary somewhat from the NHRA classes. Some classes and cars are unique to IHRA, and can not fit an NHRA class as is.

We'll start with S/S. IHRA S/S recently added some of the Modified type cars to it's class, when IHRA Modified Eliminator was dropped at the end of the 2002 season. For years, there were just three sub-classes within S/S. Tradtional, SS/GT, and SS/Production. S/S and SS/GT are the same rules as NHRA, as are the Modified type cars. SS/Production is similar in a way to the Modified or Modified/Stock cars, with less modifications. There are two types of SS/Prod cars, SS/P-1 and SS/P-2. If the car has a '1' after it, it is a single 4 barrel. A '2' indicates a single two barrel. Classes are SS/PA and SS/PAA through SS/PJ and SS/PJA, either with a "-2" or "-1" after it. Cars are classified on a pounds-per-cubic inch setup.

IHRA Stock Eliminator. IHRA has the Stock, FWD and Trucks classes, in addition to a few exclusive classes. They are Stock/GT, Crate Motor Stock, and Pure Stock.

Stock GT: Run under similar rules to SS/GT, with different year motors in newer style bodies. Pounds-per-HP break clasification, running from S/GTA to S/GTG.

Crate Motor Stock: For any year car 1955 or newer and some smaller trucks, using one of several "approved" Crate Motor engines. 13 classes from A/CM to M/CM. Corporate motors allowed. Such as a 502/502 in a 1970 Buick GS.

Pure Stock: As the rules state, this is the purest form of Class Racing, with the most limited modifications. Slicks are permitted, but with DOT tires, some Pure Stocks could probably be street legal. A through I/PS are the classes.

In Pure/Stock, Crates and GT Stock, sticks and automatics run together in the same class.

IHRA does have one other "exclusive" brand of Class Racing. And if Pure Stock is the purest, well, GM Performance Top Stock is easily the wildest. Started in 2000 by Mike Keener and Terry Bell, it has become one of the crowds favorite classes. Heads-up .500 Pro Tree, no breakout, wheels up between some of the baddest original muscle cars taking on some of the quickest Crate Motor cars (1961-1974 for crates) around. Fans love it. It was started as a heads-up class for A-B-C classed Stockers. Big block Camaros, Cobra Jet Mustangs, 6 pack, Max Wedge and Hemi Mopars, and even a few LS-1 and LT-1 late model EFI cars made up some of the 23 cars at the inagural event in 2000 at Norwalk. Al Corda's '00 Firebird ram-air LS-1 (C/SA) won the event over Paul Mercure's 396 '68 Camaro (A/S). In 2001 crates were permitted. I'm not a big fan of the crates, but they do add their own flair to the class. The class is also with Stock Eliminator, on an 11.00 Index and designated as T/Stk. The quickest run to date has been 9.84. Fiberglass hoods are permitted, as well as removing the alternator and moving the battery to the trunk. 10.5" slicks maximum and sticks and autos run together at the same weight. Top/Stock HP ratings are seperate from the IHRA and NHRA HP ratings. Top Stock is a class of it's own for the most part, with qualifying run during the Pro sessions, seperate from Stock Eliminator. Eliminations are held Saturday night during IHRA's famous Night Of Fire program. Racers may race in Stock at the same event, just not with the same car. Or, you can run your car in Stock under the T/Stk designation, but will not be able to compete in the seperate Top Stock race.

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Mike Carr
Stock Eliminator, NHRA 1302 / IHRA 1302
Street ET 1302, Quaker City Raceway, Salem OH
22 years old
E-mail: [email protected]
AOL IM: MikeCarr STK1302
"Hookers are headers, NOT street walkers"--Jim Fontana, S/S racer.

B.D.