[b--rad]

I wanted to spice it up a little bit.

LMAO i hear ya... well i'm not sure of the conversion... but i think by my calculations either you can fit a small child in there... or a few single celled organisms... possibly the reality is somewhere in between.. good luck with the test...

p.s. whats the metric equivalent for one HORSEPOER.. like 3.2 goats?

 

[65fasback]

What did the spacer look like that went on it?

No spacer and dominator carburetor.

 

[Mustang5L5]

p.s. whats the metric equivalent for one HORSEPOER.. like 3.2 goats?

Lol. The "Metric Horsepower"

1 HP = 1.01 Metric Horsepower.

1 Horsepower lifts 550 pounds 1 foot high in 1 second

1 metric horsepower lifts 75 Kg, 1 meter high in 1 second

 

[Nitrous SSC]

Metric for horsepowers is ****-thrust. 1 HP is equal to 10 ST's.

 

[b--rad]

Lol. The "Metric Horsepower"

1 HP = 1.01 Metric Horsepower.

1 Horsepower lifts 550 pounds 1 foot high in 1 second

1 metric horsepower lifts 75 Kg, 1 meter high in 1 second

MIND BLOWN......

 

[96pushrod]

Monday I’ll be doing the manifold swap. I’ll get measurements in English then too

Long as I can get the vacuum lines sorted hopefully I can heat cycle it the same day.

 

[LilRed86]

Some flow bench testing would be interesting to see if they coincide with what Big dogs says they flow.

 

[65fasback]

Some flow bench testing would be interesting to see if they coincide with what Big dogs says they flow.

At what actual depression?

 

[4eyefever]

Definitely reverse taper there........but let's see. We DISCOURAGE porting any GT40/Cobra/Explorer lower beyond a 1250 size head port but we get a lot of requests for 1262 - we try to discourage that and suggest better alternatives. I'm thinking Tony cuts length out of the upper to make up for larger cubes when a more appropriate intake suggestion is more in order. Kudos for the test 96pushrod!

When was this practice implemented, must have been this years New Years resolution.

 

[Ed Curtis]

Monday I’ll be doing the manifold swap. I’ll get measurements in English then too

Long as I can get the vacuum lines sorted hopefully I can heat cycle it the same day.

Testing with "and" without the blower belt???

 

[ndmp40]

As I said previously, "testing" with a blower will prove nothing.

 

[rob]

As I said previously, "testing" with a blower will prove nothing.

Nothing? We waste are money running the box r or similar with a supercharger?

 

[96pushrod]

As I said previously, "testing" with a blower will prove nothing.

How do you figure? If the blower makes power at 11psi, and the intake change increases to something like 13, does that not prove a restriction?

 

[CDW6212R]

How do you figure? If the blower makes power at 11psi, and the intake change increases to something like 13, does that not prove a restriction?

Of course there is a difference, but it's extremely hard to accurately compare the differences when using boost. A 40cfm difference in heads should make a huge difference in a NA engine, but with 10-15psi boost, the change is likely to be minor. The intake is critical for a NA engine, but comparing a 5500rpm intake to a 7000rpm intake, with boost in the same rpm range, shouldn't be earth shattering.

 

[Str8ballar]

So let just say a car makes
420hp with Box intake at 11psi that is 734hp

Now lets just say with the cobra intake makes 390hp at 11psi thats 681hp

So 30hp NA cost 53hp supercharged

So in my opinion supercharged should make it easier to see being it cost more hp.

Wallace Racing - Estimate HP From Adding Boost Calculator

Now lets just say it is restricted it will take just like stated above 13psi to get back to 734hp

This isn't rocket science.

 

[Str8ballar]

Now let's just say it does need 13psi to be back at the 734hp. Thats great to know because many people may like the idea of a stock hood. Or just like the look of a GT40 style intake. It maybe worth 2psi to have it for some.

 

[Putyoutorest]

When doing comparisons EVERYTHING should be the exact same to be able to accurately see the gains or losses. This is the issue with the testing that's been done here. Too many things are being changed in between parts swapping which leads to inaccurate data.
Simple test, dyno the vehicle with one manifold then take it off and dyno with the other without changing anything. That's how we do it. No spacers, no tuning, no tire change and no Mustang dynos just a simple parts swap. We've done that.

 

[Putyoutorest]

So let just say a car makes
420hp with Box intake at 11psi that is 734hp

Now lets just say with the cobra intake makes 390hp at 11psi thats 681hp

So 30hp NA cost 53hp supercharged

So in my opinion supercharged should make it easier to see being it cost more hp.

Wallace Racing - Estimate HP From Adding Boost Calculator

Now lets just say it is restricted it will take just like stated above 13psi to get back to 734hp

This isn't rocket science.

Not a good way to accurately compare if you are truly trying to get real data.
Best way is to runech individual part under the same conditions using the same testing process the same way. If not then the data is not accurate.

 

[ndmp40]

Of course there is a difference, but it's extremely hard to accurately compare the differences when using boost. A 40cfm difference in heads should make a huge difference in a NA engine, but with 10-15psi boost, the change is likely to be minor. The intake is critical for a NA engine, but comparing a 5500rpm intake to a 7000rpm intake, with boost in the same rpm range, shouldn't be earth shattering.

Yes.
Plus the prevailing sentiment at the Corral is to use peak numbers, and not area under the curve when looking at whether a part is an improvement.

 

[ndmp40]

How do you figure? If the blower makes power at 11psi, and the intake change increases to something like 13, does that not prove a restriction?

It might, but what does that prove? Perhaps you get more useable power with the "restrictive" intake.