500hp & 600hp Bench Racing thread

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It’s so easy to pick your horsepower target and drawl up a plan now. 40 years ago it was harder but still doable. Mother mopar gave us a good blueprint for big blocks and W2 heads were available for the guys looking for 500 horsepower. We were also blessed with some good cam grinders over the years. Don’t use a shotgun coming up with a plan. Get out the sniper rifle and zero in on it.
 
pittsburghracer said:
Let’s just say they stretch the truth and many gets free parts to test. Dyno number to me don’t mean diddly squat.
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That’s why none of the top engine builders in the world don’t use a dyno.

The fact is most of the time when the dyno is off it’s customer related. You know, the customer who wants to use dyno headers, dyno carb, dyno ignition. None of which goes in the car. Just those three things can add up to an easy 40-50 hp loss.

Then they throw the engine in a junk **** chassis with a tight converter, not enough gear, headers that would strangle a decent 10 horse Biggs & Stratton, junk shocks, pinion snubber, shot springs and who knows what else.

And when the car doesn’t run the dyno “number” it’s “junk” dyno, a lying operator or any other such excuse that blames anything and any one but themselves.

Most guys who constantly say that dyno’s lie and the are useless are the same guys who say the same **** about a flow benches.

The dyno is a tool. No different than a screw driver or torque wrench. To not use a dyno is stupid.
 
It cost $400 to dyno the engine that's in my car, and it was the best money spent on the whole build. Do I take the numbers as the gospel? No, as Rat said it's a tool and that was how I used it. If I ever build anything that makes much steam, it'll go on a dyno too. I relate them to a tire gauge, mine and yours may not read the same, but both will read changes.
 
I know dynos do help some guys with finding issues and tuning so they aren’t worthless. So let’s say some guys need them and some guys don’t.
 
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