Freiburger's: "Not-so Great Intake Comparo" on SBC but interesting

[Qikbbstang]

Got to question the seemingly Open-Headers Inside the Dyno-Room?.............Is that a Calf wacky emissions/sound law thing?................

https://www.youtube.com/watch?v=-XjDq2DcZk0

[cjshaker]

My Son told me about this series coming up. On the plus side, with Steve Brule involved, this has the potential of becoming at least a half way decent tech/info show. I'll be giving it a watch-and-see.

[57 lima bean]

How incredibly courageous of David Freiburger to take on this new concept with such an exotic engine.

[jayb]

LOL!  Steve P, master of sarcasm.  Freiburger actually did the same thing with some Mopar engines several years back.  You know, the kind where you take off 10 bolts to change the intake; kind of like a 351C Ford.  He's stepping up his game with the SBC; maybe he finally read my book and was inspired...

[ScotiaFE]

Pretty stout orange thing. 
 

[Joe-JDC]

One problem I found with the articles on different intakes was that it did not work on another engine the same way.  I tested at least 4 of those intakes, ported them, and tested them with different spacers, and did not get similar results.  Maybe it is a chevy thing, but on all the dyno testing I have done in the last couple of years, things just don't always work as printed in those magazine articles.  I think I ported at least 10 intakes for this year's EMC entries for folks, and the results were mixed at best.  Plenum divider slots vs no slots was a mixed bag of results with different horsepower levels on same type of engine, but 200 hp difference caused differing outcomes of whether the divider liked the slot or not.  Lots of variables, and lots of testing needed to find the absolute best combination for whatever intake is being used and on how many cubic inches that same intake works with. 

[Qikbbstang]

Got to question the seemingly Open-Headers Inside the Dyno-Room?.............Is that a Calf wacky emissions/sound law thing?................

[jayb]

If you're going to do some exhaust tuning on a race engine, open headers in the dyno room is the way to go.  That's the way the engine will be running in the car.  The inlet path is sealed on SuperFlow dynos, so the engine isn't taking any air from the dyno room itself, its getting air from the shop or outside.  And all dyno rooms have a big fan to evacuate the air in the dyno room itself, so the only real issue is the noise.  And some of us like that

I will usually get the engine tuned exactly where I want it, and then do one or two pulls with open headers just to check that out.  I've seen engines pick up power, and also lose power, with open exhaust...

[shady]

I like it. but then again, I like most anything technical.

[ChiefDanGeorge]

SHow format was too short. I'd like to know why the intakes perform in the manner they do. THrowing parts on and running the dyno doesn't tell me much.
I dig the Hot Rod shows they do, but all of them suffer from being too short alot of times.

[Falcon67]

Good video article - could do with a little less jump cut fake drama IMHO.  When I ran a tunnel ram on the 302, I did not see any increase in HP but thats mostly because its got a small cam and a small iron head.  It did not lose any MPH on the strip, so power production was the same as a dual plane 650DP setup.  It did lose a little in the 60'. which was expected on such a small motor.  If I wanted to put a 347 kit in it with some better heads the results would be way different I think.

[Qikbbstang]

Re: "open headers in the dyno room is the way to go. "


    eh, eh what'd you say?....................The decibel's must be right in there with a NASA rocket launch

[Drew Pojedinec]

It isn't that loud.  Compared to my work environment it is downright quiet. 

[Qikbbstang]

LOL come-on Drew open headers in an 12x12 room...that's usually concrete wall'd....

[jayb]

I think it sounds good