Date with a Dyno

[pgermond]

Our club organized a Dyno Day (3 pulls – no tuning - $55) for those that want to see what there cars would do. I was a bit disappointed with the results :( but I know the car needs to be tuned and it starts to miss at 5,600 – 5,700 rpm. All three pulls were almost identical – 300 hp and 316 lbs at the rear wheels with simulated highway conditions. I was told engine hp/torque is approximately 25% greater than what was charted.

The miss has me a bit baffled, so I think I’m going to change out the SA distributor with an MSD Pro Billet (been considering this for awhile, and the dyno results pushed me over the edge). New plugs and some carb adjustment is almost certainly required, although you can tell by the exhaust pipes that the 70/30 mix is keeping it running clean. [^]

At any rate, this car has plenty of kick for my use, and that’s my story and I’m sticking to it!

http://www.uniquecobra.com/uploaded/pgermond/PC040081.JPG

Phil

427 Roadster, #4279436
Southern Automotive FE
3:31 and Toploader

Roseville (N.Cal)

[gasman]

Phil, I'm no expert but your exhaust almost looks a little too lean to me.

Steve Foushee
Unique #4279389

[clayfoushee]

Steve, ANYTHING, other than what you're used to would look too lean:D:D:D!

Clay

'98 Unique #9299, 427FE side oiler (452.1-stroker), top-loader (close), 3.31 rear

Annapolis, MD

[eliminator]

Steve is correct "he's no expert"[^]
Your exhaust is fine;). Sending you a e-mail concerning the distributor.

Rick
#4279405

[will butterworth]

phil, just changed out a duraspark for a new dropin msd dist., msd coil, msd 8.5mm wires, and new plugs, man what a diff. it makes, cleaned up eng. compartment a little too runs super.Will-alabama

[Stephen Dutton]

Eric Miller had the same lack of power issue. He should be able to point you in the right direction.

Good Luck

Stephen Dutton
Dutton Performance Engines
256-820-0706

[Brent]

Steve,

Glad to see you join the Forum. Your reputation impressively preceeds you. I spoke to Eric at homecoming and he is VERY happy now.

Nice avatar!



Brent
427 SC Chassis #4279401
Candy Apple Red/White
402 FE/Toploader/3.54

[Stephen Dutton]

Glad to be here. If theres anything we can help you with feel free to call.

Thanks!

Stephen Dutton
Dutton Performance Engines
256-820-0706

[will butterworth]

Steve--welcome, and good morning. Drop me a note when you have another engine to test and mayby i can come by to watch at lunchtime.I work here in jacksonville at jsu and am on the road a lot. Zach fired up the chevelle i was telling you about, runs good. Having it aligned and brakes pumped up-Hang with us , we need engine help from time to time.I still want to build a 352w.Will-alabama

[Tony Radford]

Phil, what did the A/F ratio look like? I had 24 pulls on my car at the dyno and they did some serious tuning, jetting etc. I picked up 35 HP at the end. My Windsor made 385 HP and 402 ft/lbs torque at around 6K by the time they were done. The real benefit of the dyno is as a tuning tool.

427SC, Torch Red / white stripes
427 Windsor Stroker from Southern Automotive
Delicious example of Beauty + Power.

[pgermond]

Tony,

There was no tuning, just the HP and torque ratings. Since then I have done some carb adjustment, timing (new MSD), etc. It has more umph than it had then, but I'll bet there is more to be had. I need to make another date for some serious tuning ;)

Phil

427 Roadster, #4279436
Southern Automotive FE
3:31 and Toploader

Roseville (N.Cal)