Holley Intake Dyno Comparison

[final5-0]

The other day someone asked about using a Holley Systemax Intake

I only found one combo in my files using this intake

I threw it up next to this FTI combo as it was already in place from a recent
comparison thread we talked about

Here is the data and chart!

Grady

 

[Grn92LX]

http://www.the-arnolds.net/Cobra/emissions-306.htm#306dyno

Heres another but its a 306.

 

[BlackVert]

wow that is a big difference. it is probably noticeably softer on the low end

 

[RAD]

Holley guy have a 1 3/4 headers , they are not to big for that HP level?

 

[final5-0]

That combo is not setup like the typical Street Cars you see here

Classic case of shifting the power band higher

Sure ... the low & mid range is soft
but
At the track ... you leave at high rpm and stay there for 1320 feet

That combo, to my way of thinking ...
is kind of an old school style application

Search out the pull of GTJake

Similar peak hp value of 326
but
Great low & mid range curve with a peak tq value of 341

The various combos you see on all these sites ..............
They really are a result of the selection of parts by their owners :Word:

Grady

 

[final5-0]

Notice the pull provided by Mike ... Thanks Mike

Much better low end and mid range

300#'s by 2750 and holds 300 or better through the mid range
and
From that point on ... it just climbs

350 SAE rwhp from a little 306 .......... That ain't bad

Then again .......
he could have done the pull with no belt
or
some kinda bs like that

Grady

 

[zenboy99]

I'm hoping to dyno my car soon once I get it running (it's been sitting for almost a year!)

I like the Systemax alot better. Definitely lost low end power, but if you're geared right and no how to shift its no big deal. It sure screams at the top end though.

 

[95opal]

I can tell you from experience that the Holley is a little soft down low. My combo with the TFS street had a lot more down low then the same combo, with the holley that Im running now. But the holley rips up top and the TFS just falls on its face.
Im pulling the 3.73s out this week and putting in a set of 410s, Im hoping that will help out some on the low end of things. Either way I like the Holley and am glad I switched. Im actually thinking forced induction for the winter project, so the Holley will be perfect for that.

 

[Dino Dino Bambino]

If you want a proper intake comparison, take a look at this article:

http://www.andersonfordmotorsport.com/media/intake.htm

This is why the Holley Systemax is probably going to be my choice of intake later on when I do the HCI. The Edelbrock Performer was the most impressive of the "street" intakes with its combination of low/medium rpm torque.

 

[final5-0]

Well Folks

I did a little snooping around and found the hard facts on that pull
with the Holley Systemax II Mike was so kind to provide for us

The pull looked so great when we first looked at it
but
I knew numbers that good ... Well ... There had to be a reason

First ... Let me say ... That combo is really nice :Word:

Lotta thought & $$$$ went into that car

but

It ain't no OEM block based combo like most you see here
It has some really nice high dollar parts
It has a trick or two which helps yield those higher than average values

So ... it kinda out classes that simple OEM FTI street combo

but ... never the less

I wanted to give peeps the chance to see it on an apples to apples
comparison with that other Holley combo

Here is a short list of advantages this little 306 has going for it

Its a purpose built, blue printed and balanced 306 short block
Its got some really nice headers
Its got a 3" exhaust system
They used pulleys and reduced accessories (ac & ps)
T-5 trans is a bit more efficient than the other combos 3550
A pms tune where the other combo had none

Now ... Notice this latest Holley combo sports a Catted X mid pipe
True ... Those pipes are very efficient
but still
Something like a 5rwhp loss

Bottom line on this combo is this

A very nice combo for sure
and
It could be driven around on the Week Ends
but
Its gonna most likely have a pretty nasty lope
and
Drivability is not gonna be stock like

anyway ... here is what I found

Grady

 

[urban96]

whats up with that tq curve tho?

 

[final5-0]

Just a dip in the curve

Spark Table might need a bit more spark at that particular rpm

Maybe a bit more or less fuel

Could be one of several things

Grady

 

[Dino Dino Bambino]

Yeah, I noticed the torque "hole" in the 3000-4250rpm range (maybe the A/F mixture became too lean) but the Holley does produce an amazingly good spread of torque with at least 300rwtq available from 2800-5900rpm. In terms of area under the curve, it's got the Eddy Performer licked.
The Eddy, as expected, does its best work in the 3500-4500rpm range.

 

[final5-0]

I would like to once again remind everybody this last combo used pulleys
and
Was N O T turning an ac or ps

Don't be mislead here

That tactic of producing more torque is very effective
and
The benefit of it will be seen A L L across the curve

Soooooo

The results here are definitely skewed
meaning
Things are not as it seems :Word:

That tactic is fine for a Race Car or maybe a Weekend Toy
but
Most won't go that far with a Daily Driver

Grady

 

[5spd GT]

Then again .......
he could have done the pull with no belt
or
some kinda bs like that

Grady

Yeah, it didn't dyno with powersteering or a/c, plus with an aggressive grind and the ramp rate of that N66...I see those numbers being very possible.

Unfortunately (or maybe fortunately) most daily driven cars do not go that aggressive with that type of cam and setup. I'd prefer my combo over that combo for a daily driver. But for a track car like that, I'd go for it for sure