Question for those that dyno'd

[sacrstang]

When you put your S197 on the dyno did you have all your exhaust components on or did you leave the headers wide open by taking the exhaust system off?
The reason I ask is because I got to talkin to an old schooler. He used to run his 68 or 69 mustang at the track. He gave me a couple tips. If I took the car out again he said that I should try running without my exhaust system on and the headers wide open (which I will have to check and see if it is ok at my local track) and he said he would fabricate a device for me called a torque sling. It prevents the engine from moving side to side and forces all the power back instead of sideways when mashing the gas. He also asked if I knew what kind of horse power and torque my car puts out and I don't know because I have not been to the dyno yet. But I have seen some numbers in magazines and on here of course and they are around the 270-295 hp range. He insisted with the tips that he gave me and the mods I already have done the car should be close to the mid 300's at wide open throttle. I'm open to trying these as the sling is removable and the exhaust system can be put back on.

 

[warlock1313]

My 06 gt put down 296hp and 310 lbft toruqe with an x-pipe c&l, tune, 410's. I pulled the factory mufflers and lost 3hp and 5lbft torque. I dont see any power gain from unbolting the exhaust from the manifolds. For a stock system (headers and mufflers) it flows very well. As far as what the other guy did with his old school ride.... its a different animal.

Besides I wanted real world numbers, not some rigged track only readings.

 

[StonePony]

If your car was highly modded the open headers might gain you a few horses. However with your mods I think the lack of back-pressure will hurt.
Remember the GTs in 2005 -2007 have 2.5" mandrel bent exhaust. It is not like the old bent-up skinny exhaust Ford used in the 60's on Mustangs.
The torque sling is just a chain that is bolted to your head/block to the frame and anchors the engine from lateral twist. you can accomplish the same thing and no noticable chains by changing your motor mounts to solid or urethane.
The car may shake a little more.
I am an old timer and I ran open headers at the track before but only in a highly modified engine. Natrually aspirated engines like some back-pressure. Forced induction can benefit from more open exhaust.

 

[5ive.oh]

Removing the air filter will net you 15-20 hp too. j/k

 

[sacrstang]

Thanks for the answers guys. The guy that I talked to is a coworker and I see him about once or twice a week. I am gonna go with the torque sling and see if I notice anything. We are gonna take a look and measure what size piece I need and we'll probably get some type of bushings from local speed shop. The other piece that holds on to the engine can be bought at home depot. The bushings will absorb the pushing of the engine and prevent some of the shaking through the car. As far as the exhaust goes and testing at the dyno I may wait till I have the resources and time to do it.

 

[manystangs]

Thanks for the answers guys. The guy that I talked to is a coworker and I see him about once or twice a week. I am gonna go with the torque sling and see if I notice anything. We are gonna take a look and measure what size piece I need and we'll probably get some type of bushings from local speed shop. The other piece that holds on to the engine can be bought at home depot. The bushings will absorb the pushing of the engine and prevent some of the shaking through the car. As far as the exhaust goes and testing at the dyno I may wait till I have the resources and time to do it.

I don't know how to put this so here goes. Don't get some half ass junk from Home Depot. Get the solid Motor Mounts and do the job correctly! JMO.

 

[pspc271]

There is always trouble when you go shopping for car parts at Home Depot!