CLASS RACER FORUM - IMuscle Car Era Popularity

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Re: IMuscle Car Era Popularity - Indy 2022 Stock

I have raced stock before and appreciate the class. I was at Indy this year and enjoyed watching as much of class eliminations as I could. I did hear tear downs weren't as strict as they once were, could this be a trend. Let's look at one car I have a 1971 Pontiac Ventura four door. The most power it comes with is a 307 2bbl according to the guides.But I can change the front sheet metal and rear tailights and turn it into a Nova. Then I can claim it as a 1970. Looking at the guide it tells me I can run a 350 factory 300 horsepower with aftermarket heads, only available in a SS two door to my knowledge but it's there. Then it tells me I can run a 402 factory 350 horsepower big block in a 1970 Nova non SS four door, shipping weight 3346.Has anyone ever seen one ? But it's stock legal. But if I showed up with a aftermarket carb on my 307, I'm out of there !

Re: IMuscle Car Era Popularity - Indy 2022 Stock

Quote:

Originally Posted by tavirace (Post 666946)

They allow any rear end that came from the manufacturer. Any transmission that came from the manufacturer and then some. Many aftermarket heads etc.How about any carburetor available or some spec carburetors, 650 on a small block or 750 on a big block. It would really just benefit the slower classes, they could use some help.

The reason some of these combos are low horsepower are because of a small cfm carb.
The 307 you ran on your Ventura has one of the smallest Rochester 2bbl carbs made. Allowing you to run a different carb would significantly change the hp on that combo. NHRA did "loosen " the carb rules when they allowed you to run a carb with the same venturi and throttle blade size instead of the exact part number. That allowed you to run for example a regular quadrajet on a ram air Pontiac instead of a 2000.00+ carb before you worked on it. Many feel the valve spring rule, roller rockers, solid cams, or even solid rollers in some applications killed the integrity of the class. A spec carb would really throw that over the edge in my opinion. I don’t know why you would need a spec carb unless you.come up a combo where a carb is unobtainable.

Re: IMuscle Car Era Popularity - Indy 2022 Stock

Quote:

Originally Posted by tavirace (Post 666972)

You could change your car to a '73 model and run the 350 Pontiac two barrel that works well or to a '74 model that came with the Pontiac 350 and a Q-Jet ..........

Re: IMuscle Car Era Popularity - Indy 2022 Stock

Quote:

Originally Posted by tavirace (Post 666972)

... Looking at the guide it tells me I can run a 350 factory 300 horsepower with aftermarket heads, only available in a SS two door to my knowledge but it's there. Then it tells me I can run a 402 factory 350 horsepower big block in a 1970 Nova non SS four door, shipping weight 3346.Has anyone ever seen one ? But it's stock legal. But if I showed up with a aftermarket carb on my 307, I'm out of there !

We can play this game all day. Lots of stuff in the guide that was never available, or maybe 1 or 2 were built. The rules are already pretty forgiving...no need to make it worse.

As far as that Ventura...change it into a Nova and run the 307-2bbl. Lower hp rating whether you run it as a '71 or '72, and it doesn't have to be as heavy. There may even be someone on this forum who runs such a combo...

Re: IMuscle Car Era Popularity - Indy 2022 Stock

I really appreciate the comments from knowledgeable people, I want to create a car with some longevity and hope the class is going to have it also. We either have to assume that change has come to an end or if it does come what could it be. The class has to remain viable to racers and most importantly NHRA or they won't keep it.