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04' mk2 BA ute 554rwkw


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  • Dropping a turd
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  • Member For: 16y 5m 1d
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True.  I am talking 350 chevs in the mid 80s.

 

You probably weren't even born

 

In fact when I was swinging spanners on cars and bikes most of the dudes on this forum weren't even born

 

Young spuds hey, you don't realize how good you got it these days.

 

I couldn't Google sh*t. Just had to sort it out myself.

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  • less WHY; more WOT
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  • Member For: 15y 11m 18d
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of course E85 makes a difference.. a big one... but you're right with the birth stats, but that's irrelevant..., we have it great :) power is easily made these days with race fuel at the bowser :spoton:

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Surprised he didn't list his engineering degree :pandalol:

 

I really don’t want to reference this post by Dynomite performance again but here we go. Just because a Barra can make 1000hp with stock cams, does not mean cams will do nothing for performance. Surely the guy who owns the worlds fastest Barra would have some idea? It’s like everyone on this forum hates cams

264752bb458b51938ac10342020bd070.jpg

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  • Puff
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7 hours ago, k31th said:

sounds like it would just shift the powerband, in that sort of "old days" application, wouldn't it? upping compression would definitely work, but it's not used in this scenario.

7 hours ago, arronm said:

True.

 

Both statements are untrue and the principles in discussion are no different now than they were in the "old days".

 

Do you even compression bros? Do you even camshaft?

 

Cams don't just shift the powerband and "upping the compression" definitely played a part in the car making more power with the progressive dyno runs.

 

Adding boost is raising the dynamic compression ratio and using different cams can raise or lower compression as well as change flow characteristics.

 

7 hours ago, arronm said:

I couldn't Google sh*t. Just had to sort it out myself. 

 

Google wasn't around when I was younger either.

 

Here's a google search for the pair of ya anyone to read about compression ratios and camshafts. Here's another one to help with understanding flow.

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  • Dropping a turd
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Major difference between boosted cars and N/A. Cams DO shift the power and torque curve.

 

No "progressive dyno runs" back in the day, cause WHO had a dyno.

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6 hours ago, tazzanz said:

*fb pic*

without the "rest" of that post, it's useless in this context. To me, in that post, he was clearly "marketing" a product... he didn't provide any other information regarding what actually changed between those runs and never would.

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  • Puff
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1 hour ago, Puffwagon said:

Cams don't just shift the powerband

Implying that's not all they do, in response to k31ths post.

 

16 minutes ago, arronm said:

Cams DO shift the power and torque curve.

I didn't say they don't do that. See above.

 

16 minutes ago, arronm said:

"progressive dyno runs"

 

11 hours ago, DC-Auto said:

9.7psi = 524rwhp

14psi = 571rwhp

16psi = 593rwhp

17psi = 609rwhp

There is the example I was referring to.

 

16 minutes ago, arronm said:

WHO had a dyno.

The eddy current dyno was invented about 85 to 90 years ago so they were around "back in the day".

 

Anyways...that was more explaining than I cared to do and I can see this thread getting derailed any moment. :)

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  • Dropping a turd
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To make big big power you need RPM.  To make RPM you need modified cams.  

 

It's always  been the same. 

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  • Puff
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Yep that I can agree with.

 

I think the general argument behind barra motors not needing bigger cams is that they are already sufficient for 90% of street cars.

 

Also there is a lot of work (full forged rebuild at a minimum) that needs to be done to make big cams work properly and reliably in a barra motor.

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  • Dropping a turd
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True.  Street cars don't really require modified cams

 

Spoils the drive and the fuel consumption. 

 

Totally different for a track car.

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