Kevin91Z

We'll finally get to find out how much power/torque the special porting and siamesing is worth on my engine this Saturday. We'll also be dyning Don's Trans Am to get a baseline, and Alex's 406 SuperRam, and Bill's new AFR-headed combo in his 91 Z28.

But just remember red ones are faster.

http://www.markdibella.com/index.html

Yes its an import shop but they have a dyno and that's all that matters. And yes his dyno can handle the torque of a V8. See you around 10am.

__________________
1991 Camaro Z28
355 RWHP, 360 RWTQ
12.803 @ 108.50 MPH (1.923 60')
Member: Southern California Thirdgenners
-=ICON Motorsports=-
Work: Manley Performance Products

Burnout91

Bill's car got walked on the top end by a '06 or '07 'Vette today ...I hope we can find a little more power. I recently reworked my SLP runners and stock plenum to look like the mega-porting offered by corvetteplenum.com., in an effort to extend the RPM range. We'll see how it worked Saturday.

Bill

Imadude_134

Whats the cost? If I can afford it, I will def be there

TA

I'll be out of town, but you guys should DEFINITELY do this if you possibly can.

TA

injdinjn

I'll be at the Pontiac Show at Jim Wangers Garage on Sat.

1989GTATransAm

I will be there. Either as an innocent bystander or with my TransAm. Do I need to bring anything?

Dyno Don

Just to eliminate any confusion, we won't have enough time for any other cars on this day, but will be having a regular dyno day for some pulls in the future.
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Your table for one.

Imadude_134

Ah, never mind then.

Good luck to you guys!!!

Orr89RocZ

definately looking forward to the numbers..keep us posted

1989GTATransAm

Orr89RocZ, I know the cars that will be dyno'd will be of high interest to you and others on this board. It will be up to the owners if they want to release the data. They have motor combinations with some of the latest technology and should be pushing the envelope.

Items like the XFI cams, AFR 195 Eliminator heads and an experimental TPI system. That is why I want to be there. I want to see what the latest is.

We had a manual transmission car on the dyno last year that did not have the latest technology and he put down 350rwhp.

Orr89RocZ

thats why i would LOVE to know what your combinations put down. I havent seen anyone put up numbers for combinations like that and i feel those are the combinations that will be making the most power out of TPI systems, or any intake setup for that matter. I will be definately posting numbers on my HSR/383/custom grind cam from BRE, whenever i get it done

Kevin91Z

Yes, unfortunately the shop isnt open late on Saturday so we have to hurry and get our four cars in. But you're all welcome to join us and then we'll go out to lunch afterwards.

85gulstrandTA

I love 406 sbc's, I've replaced more rear tires that I can remember with mine. All from going to LACR of course...never on the street....Looking forward to the results.

1989GTATransAm

Yep, the report cards are out today.

injdinjn

and the results are?????????????

1989GTATransAm

I think there is a whole lot of analyzing going on. Anyways the three cars on the dyno were impressive in their own categories. As usual they will have to speak for themselves.

Dyno Don

His Dyno was little stingy....about 10-12 HP low as seen by my combo.
I just made the one pull to get a base line.
Previous was...327-365
Today 315-350...no changes since last dyno session. (on other DynoJet)

Orr89RocZ

weather changes? i hear its possible readings can be altered depending on how well the car is strapped to the dyno as well. Getting a good tach signal is important to, could possibly throw things off abit if not dead on

Russ-So Cal

There are a lot of variations with dyno's. If the dyno is not calibrated correctly, it will throw the numbers off. If the weather changes from one session to the next, the numbers will change. There will even be variations from one dyno to another if made by the same manufacturer. The real value of a dyno test is getting a baseline and then retesting on the same dyno to see if your mods improved things. The fact that Don did a baseline on both dynos without changes to his combination gives us an indication of where this dyno is in comparison to the other dyno that was used. It should give an idea of where the other cars "stack up" when and if the owners make their numbers public.

Kevin91Z

You are supposed to use the "correction factor" on the dyno results so that weather plays no effect on the results. We used the standard correction factor for our numbers.

I made 360 RWTQ at 5000 rpms and 355 RWHP at 5300, but it carried the 350 RWHP up to 5800, where it then fell off quickly. Very similar to Allen's results. It looks like we have hit the limit as far as the shape of TPI intakes. It doesnt matter how well your runners or intake manifold flow, what matters is the shape of the runners and the flow characteristics of them. With my engine making peak torque way up at 5000 rpms it should have made peak horsepower in the 6000 rpms range. Miniram and Stealthram intakes dont have this problem because they have different shaped runners.

Dyno Don

Here is my graph & 2 of Kevin's

Attached Images

	Dyno Graph.jpg (77.8 KB, 60 views)
	Kevin'sGraph.jpg (62.0 KB, 1706 views)
	Kevin's_Graph2.jpg (62.1 KB, 1693 views)

Kevin91Z

I will bring the video to our meeting in April. Hopefully we'll have the TV and meeting room this time.

Orr89RocZ

Not bad at all, i've be very happy with a powercurve like that. Kevin91Z, your car has a FLAT torque curve. its around 360wtq from 3500-5000 and holds abit after that. That is a great curve.

It is surprising to see hp flatline at 5300-5800. Flow numbers arent everything i guess and you've proved that. Still a great powerband up top. Flat hp curve from 5000+, that car will fly!

85gulstrandTA

I wanted to see what Alex's 406 would do ?
I pulled one out of my 85 TA, and in the proccess of installing a 305 roller cammed motor that had a 5sp behind it. I'm using a 700r4 because the car will be driven daily. But if things go well in the future I could put a 406 back in if it would pass So. Ca. smog. The #'s you guys posted are great no hondas hanging with you on the freeway, hope they like you taillights though lol.

1989GTATransAm

I was looking at some of my dyno pulls from late last year and found this one. Most of the time they start aroung the 4500 rpm mark to keep the transmission from downshifting into 2nd gear. For some reason this one starts at the 4000rpm mark. Looks like it was cut off around the 5800rpm mark.

Notice how the horsepower is virtually identical to Kevins. After the cam and valve spring installation I should be ready for another dyno pull in the comming weeks. It will be interesting to see if there is much of an improvement.

Attached Images

Dyno Run 18 12-08-07.JPG (75.7 KB, 34 views)

85gulstrandTA

My 406 had rpm heads,comp 292 cam 244 @50, victor jr, holley 750 so need less to say it would not stay on the road long. Car has sat for years now I want to make it a cruiser.....I have 3 400 sbc's so maybe It will get another.

82FirebirdTA

Alex's car wasn't able to dyno yesterday.

Burnout91