No, the engines in Cup and O'Reily have to be made by the same manufactuer as the body. If you ever looked at what they are running today, obviously they are not production-based engines. However, they are all different. And no the blocks are not all the same. Nobody tells

In Response To: Aren't the long blocks all pretty much the same? Same bore, same stroke, same cylinder spacing, maybe minor differences in the heads and intake *NM* ()

teams what bore & stroke to run. It has to be 358 cu. in. maximum, that's all. Why do you think Ford motors are all built by Yates or Roush, GMs are mostly built by Hendrick or RCR, and Toyotas are all built by TRD? Because they are all unique. The Dodge NASCAR engines were produced by Penske in their own shop. If NASCAR all of a sudden lets Dodge run a GM engine, that would just be blasphemous. NASCAR didn't let Toyota come in and run GM or Ford engines. They had to develop their own engine. I'm all for Dodge/Mopar coming back, but they should not be given special treatment. They left in 2012 after winning the Cup championship. They could be a front runner today if they had kept that going. It was disgusting to all us Dodge fans when they quit like that. Stellantis is the no.2 auto maker in the world, and they can spend whatever is necessary to make this happe the right way!<

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NASCAR news: RCR Racing via their ECR Engine shop building Dodge engines for 2027 season.
- I'd like to see how they can come up with a new Dodge engine by Feb. '27. Or even a year from now. I sure hope NASCAR isn't letting them use "rebadged" Chevy engines. That would not sit well with most of us old school fans! *NM*
  - The last gen Dodge engine was a worked over NASCAR Chevy motor that was pure race not made by GM (Ilmor)
  - Wouldn’t it be the same as they’re running in trucks? Or is that a different spec. *NM*
    - ALL NASCAR Truck series use Ilnor GM BASED (not really) engine *NM*
  - Aren't the long blocks all pretty much the same? Same bore, same stroke, same cylinder spacing, maybe minor differences in the heads and intake *NM*
    - No, the engines in Cup and O'Reily have to be made by the same manufactuer as the body. If you ever looked at what they are running today, obviously they are not production-based engines. However, they are all different. And no the blocks are not all the same. Nobody tells
      - Supposedly, Dodge got out of NASCAR after Penske, their top team, switched back to Ford. Stellantis said then they would stay in if their was a strong team that wanted to run Dodge.... *LINK*
- It’s all interesting, but TBH modern NASCAR confuses me a little. They are basically spec cars with absolutely zero in common with anything production, so definitely not “stock cars”. While I understand how they got here (basically safety and parity), it confounds me
  - Obviously, the car/truck manufactuers see value in putting their name on race cars. Don't forget, Chevrolet and Honda have Indy car teams, 5 european manufactuers and Cadillac have Formula One teams. Talk about zero relevancy to production cars! *NM*
    - GM would be better off spending that money fixing their truck engines *NM*
    - Sure, but Indy and F1 are not “stock car racing”. Never have been, nor pretended to be. If a company has an engine program for that type of racing, fine. Put a “powered by” sticker on it.