[AutoGear]

Not everybody is looking to build a modern race engine, let alone capable of it. I've used DCR in the past as a sanity check for what I'm doing. It takes 5 minutes and for the stuff I mess with at home, and people like me? Peace of mind for someone who doesnt build engines every day - is worth 5 minutes. Id wager that 90% of the people on here, who are assembling their own engine, are using parts that DCR calcs work as designed. So why not accept that for Stan the Streetrodder; its helpful. There are definitely people in the world who have hit the pause button because their list of parts in the shopping cart didn't add up as planned. Does that mean I'd throw my combo in the trash? No; but it would cause me to dig deeper and ask questions before I pulled the trigger.

Hell I preach a rule of thumb to use a combined gear reduction of 9.0-10.0:1 for a street car. Every day, at my job. However, this supposes that you have a blue collar, work-a-day engine (300-450hp or so and a fair amount of torque and midrange), tires in the 26-28" range and probably not wider than 9 or 10". It works well given its intended audience, the avg hotrodder will keep himself out of trouble, its easy to remember and you can impress the chicks at parties with your knowledge.
Is this what I use for my F.A.S.T. guys, gassers, the Land Speed guys, Pikes Peak guys or SVRA guys? Hell no, not even close. I tailor my approach to my customers needs.

 

[johnsongrass1]

I don't care push a theory that saves guys from themselves. That's their responsibility.
The problem as I see it, is pushing a narrative to save guys from themselves quickly becomes the gold standard and when the time comes, a professional builder laughs and smirks in their faces because the hotrodder guys tells the professional engine guys they read it on the internet, and its a fact.
It's junk science, it's junk math. I see this crap walk in the shop all day everyday.

Guys looking for a high rpm screamer 327, 3/4 race cam, high rise intake elderbrok, double bump heads, and a 850 double humper carb. (Misspelling on purpose)
I always ask Why? Are you trying to go slower?

Lets educate, and help guys put in the correct parts, instead of just preventing them from chasing the really wrong ones?
Maybe it's just me.