How hp will i get from a gt40intake with stock h/c

KamiKaziDK said:

Heads don't suck nearly as much as our intake does, you should get around 15hp with a nicer torque and hp curve to the car. If you have the time/money while the intake is off.....pull the heads and get rid of your exhaust bumps and port match everything.

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PHASE 3 -- INDUCTION

GT-40 intake. Tour any car show or drag strip and you'll see Motorsport GT-40 intake everywhere. In addition
to looking great, the GT-40 induction system, which includes upper and lower sections, provides larger diameter
intake runners in conjunction with a larger 65mm throttle body, which should easily compute to better airflow
and more power.

Without making any other changes, the Steeda crew bolted on a GT-40 intake with the adjustable fuel pressure
set at the stock 32 lb. On the first dyno run, Steve said he could feel the additional horsepower in the car, but the
numbers came up shorter than anticipated, a peak of 238.6 for a gain of 6.7 horsepower over our best Phase 2
number. Raising the fuel pressure to 35 and 38 lbs hurt horsepower, so we went back to the stock 32 lb setting.

Computer module. For his own information, Dario Orlando brought out a computer module that Steeda has been
developing. When the module gave us a remarkable increase, up 10.2 horsepower for a 248.8 peak, we decided to
leave it in as part of our test. In fact, subsequent testing of the module in Phase 3 and 4 showed that it worked
better as other modifications were added. Stteda now offers the module under part number STB89.

We also tried a variety of mass air meter and chip combinations. Switching to the Pro-M 77mm meter lost a
couple of horsepower, but adding the Steeda chip with the 77mm meter brought it back up 6.3 horsepower. In the
end, we were not able to better the 75mm mass air and Steeda module combination.

PHASE 3

Peak Hp

Peak Torque

GT-40 intake
238.6@5200
6.7
285.3@3900
-2.1
Steeda module
248.8@5100
10.2
291.6@4000
6.3

Click to expand...

KamiKaziDK said:

Heads don't suck nearly as much as our intake does, you should get around 15hp with a nicer torque and hp curve to the car. If you have the time/money while the intake is off.....pull the heads and get rid of your exhaust bumps and port match everything.

Click to expand...