Running on the Dyno with my LS6 on Friday

[NEW]

I like those numbers as well!!!

I guess you probably did have a great time during the dyno session, hmmmm a fun thing to do.

NEW

[COPO PETE]

Great numbers... and ditto on all what Robs says. Especially the muffler thing!
Peter

[Mr70]

Dennis...You Should,.....and possibly this weekend at the Dragstrip too? [img]/ubbthreads/images/graemlins/naughty.gif[/img]

[mmcporter]

[ QUOTE ]
A few thoughts...

First off, those are really good numbers! Has anything been done to the engine? Any idea what cam?

That HP peak sounds about right for an LS-6 through manifolds. Mine peaked at 5400, and somewhere earlier in the thread I think someone posted that's about the neighborhood it's supposed to be in. An L-72 peaks about 300-500 higher due to it's shorter stroke, but doesn't make near the torque the LS-6 does.

As for mufflers, skip the Flowmasters and go with the Dynomax units. I've got the part number around here somewhere, but they make an AWESOME muffler for the A-bodies that will outflow that Flowmaster and will sound TONS better as well. It's what I've run on my L-78 and my LS-6, and is what the majority of the Pure Stock guys run. If I can find it, I've got an unbelievable exhaust test done by the Buick club that raves about this muffler...

You are correct in thinking all the little things (carb, valve job, etc.) will help, as it all adds up. Be careful and get the original type Pertronix unit and not the later model. Trust me, you don't want the newer style.

Again, AWESOME numbers, and I'd love to see what that thing would do on the track!

[/ QUOTE ]

<font color="blue"> Rob,

Any info that you can send on the Dynomax mufflers would be great. I had Flowmasters on my '70 SS396 and was very happy with the results. If you have had BETTER results with the Dynomax, I am all for it. How loud is the resonation inside the car? I ask this because my LS6 is a 4.10 Posi M22 car, and at 60 it's plenty loud already. As for the Pertronix, I used the older style on the SS396 and was very happy with the results. I had heard the scuttlebut about the newer model. If you could dig out the info on that Buick test, that would be great. What size pipes did you run with the dynomax mufflers?

Thanks for the commentary and tips, I appreciate it. </font>

[mmcporter]

[ QUOTE ]
A few thoughts...

First off, those are really good numbers! Has anything been done to the engine? Any idea what cam?


Again, AWESOME numbers, and I'd love to see what that thing would do on the track!

[/ QUOTE ]

<font color="blue"> To my understanding, Cam, carb and heads are BASICALLY stock. The original owner messed around with valves back in 1971-1973, but he cannot recall what he ultimately did. Otherwise it's stock Chevrolet under the hood. If you look at the pics on my link below, you can see it's all original, except for new plugs, rotor, points, and plug wires. Even the valve covers (oxidation and all) appear original. </font>

[JLerum]

Very good numbers. The Moroso power calculator says the car would run 12.50's with good 60 foot times. I'm assuming it weights 3900lbs with driver.

JIM [img]/ubbthreads/images/graemlins/beers.gif[/img]

I think the DynoMax Ultra Flo SS would be the 17288's or the 17289's. I would tell you to go to the Pure Stock Drags so you could listen to them on the cars. It will save you money if you're really picky about how they sound.

[Keith Tedford]

What kind of advance curve and jetting seems to work best for you guys?

[SS4Real]

As for mufflers, skip the Flowmasters and go with the Dynomax units. I've got the part number around here somewhere, but they make an AWESOME muffler for the A-bodies that will outflow that Flowmaster and will sound TONS better as well. If I can find it, I've got an unbelievable exhaust test done by the Buick club that raves about this muffler...

Rob,

I'm also interested in this info (Dynomax part numbers and Buick test) if you can find it. [img]/ubbthreads/images/graemlins/beers.gif[/img]

[Charley Lillard]

JLerum... Can you tell me what the Moroso Calculator says about my ZL1 Clone ? It made 828 rwhp and 823 Ft lbs...

[mmcporter]

[ QUOTE ]
JLerum... Can you tell me what the Moroso Calculator says about my ZL1 Clone ? It made 828 rwhp and 823 Ft lbs...

[/ QUOTE ]

<font color="blue">YIKES </font>