Im just wondering if there is anyone running A-specs GT3574 on stock ports, and what kind of numbers they are making.

I purchased one through A-spec(which I am still waiting on) and im very eager to know what I should expect..

So Let me see some numbers..

Thanks

 

i made 388whp@16psi on a ported engine ... but it was on a HOT day and at 6300rpm, it would have made 400whp+

Max

 

I'm curious about the numbers too...

 

I made 386 @ 15.5 psi on a gt40r on stock ports. I would imagine at that boost level you could probably expect around the same results if not a little more power. My tune was very conservative.

-Austin

 

The last car we did on stock ports put down 384@1 bar on our Dynojet with the long runner GT3574 kit and an Ebay stock mount IC. Intake temps were getting MUCH higher than ideal, so that should net even more power with a nicer IC.

 

How about with the older pettit coolcharge 2, or is that too small?

 

That IC should be much more reasonable. The issue we were running into with the Ebay IC was that it was incredibly inefficient. It uses a cheap core that doesn't work too well.

 

Was it an XS Power IC? If so was it ducted properly?

 

It was, and it we made a duct for it after it did so poorly, didn't help too much, but some. Keep in mind ducting is only going to help a bit. The cores have very little fin density that is the issue.

 

So what you're saying is that you get what you pay for?

 

If it was the XS power core, I ran the core with a duct and GM AIT's on the inlet and outlet. I was seeing pretty good efficencies during some portions of my runs (77-78 %). Were the temperatures you saw using a fan on the dyno? and was it using the stock ait sensor? It seems like on a dyno even with a fan your cooling will not be as good as on the road, this is where fin density could be a problem (low speeds).

 

Is that hp value corrected? Also, what hotside were they running?

I am hoping to hit over 400whp with a GT3574 (.84 A/R) w/ short runner manifold on a street ported engine. Wish me luck... lol

If not I can always swap to a larger hotside.

 

You will hit 400whp no problem at all.

Fritts, the car performed better once the duct was put on but still not as good as compared with the ASP/M2 cores.

Pic of duct I got stuck making below.

 

Has anyone put this on a shorty manifold and made it work with the airpump?

 

It can fit on the shorty, the problem is the CHRA is longer so the overall envelope is bigger. I haven't tried one here so I'm not too sure how tight a fit it would be. It may work just fine.

 

Sean,

Do you by chance have that dyno graph of the 384 run?

 

I'll see if I can find it. It wont be today though, man down Ryan had to go down state.