I might be winning an auction for a gt40p intake. My question is, with stock heads and cam what kind of gains will i see? I was thinking/hoping for 10-20rwhp...
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.
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.
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.
This is on a fox with pullies, upgraded exhaust, 1.7rocker arms, and the intake.
It took a tune to get to +10hp for the intake gain. And as they say, the fox's computer will respond better with mods in factory form....
so i wouldnt expect the same results from a 94-95.
Anyway, whats your end goal of the car? Focus on the package and not individual components. If next year you want to get heads...get an intake now that will be able to work at its best then...and not now. Otherwise you'll find yourself selling stuff you just bought to make a good package.
I agree, its sure worth it to upgrade the intake. They used the thunderbird intake on our cars to clear the strut tower bar, its worse then even a stock fox body intake.
A gt-40 is a good intake, but if you plan on going farther later with mods, your best bet its an eldebrock, trickflow, or holly
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.