[Murf]

Originally Posted by Formulajones

Those blocks are very small for me on my screen but I'd say yeah you're seeing that right.

So, you go old eyes too.

Anyway, that always floored me how close they ran. It would seem to me any decent dual system would be good enough for the street.

Off topic but have you ever seen Engine Masters Ytube video on denting headers vs. power output.

Later,
Murf

Sent from my Z936L using Tapatalk

[Formulajones]

Originally Posted by Murf

So, you go old eyes too.

Anyway, that always floored me how close they ran. It would seem to me any decent dual system would be good enough for the street.

Off topic but have you ever seen Engine Masters Ytube video on denting headers vs. power output.

Later,
Murf

Sent from my Z936L using Tapatalk

Yeah I've seen that Engine Masters video, crazy isn't it?

Yep got the old eye's syndrome, and ears too, but my wife thinks that is selective.

[Old Man Taylor]

Here is damage to my headers caused by a chassis dyno. I had no idea until I changed the oil. I looked at my log book for before and after performance and there was no discernible difference at all. Not even to the thousandth of a second.

[djustice]

I would reccomend pypes Racepro also, really quiet at cruise, but you hear it when you lay into it.
Used to have dual flowmaster 40 series , after changing to 2.5" pypes sgf11r with x-pipes the only thing i hear at cruise is tire noise and the rocker arms working, unreal difference.

[HWYSTR455]

Originally Posted by Old Man Taylor

Here is damage to my headers caused by a chassis dyno. I had no idea until I changed the oil. I looked at my log book for before and after performance and there was no discernible difference at all. Not even to the thousandth of a second.

Whaaatt!?!?! Oh I hope they paid for that! I would have gone postal!

.

[77 TRASHCAN]

There's a shop in Mustang, Oklahoma that repairs headers. The Nascar folks send them their best power making headers to repair after getting wrecked.... Have not talked to them in a while. Jim Hand's nephew works there, or may be part owner..........

[Ben]

Dynomax VT NO DRONE and they sound great

[Formulajones]

Originally Posted by Old Man Taylor

Here is damage to my headers caused by a chassis dyno. I had no idea until I changed the oil. I looked at my log book for before and after performance and there was no discernible difference at all. Not even to the thousandth of a second.

It's on the side even. Not like it's on the bottom where it might of scraped driving on and off a ramp style chassis dyno.
How does that even happen on a chassis dyno?? Was that done with some odd way they strapped it down?

I believe the no discernible performance difference at all. The pipes don't appear to be completely crushed and many people throughout the years would "clearance" headers to fit. I think everyone by now has seen the video of Freiburger smashing headers on a dyno to measure the difference, they hardly found any change.

[HWYSTR455]

Originally Posted by 77 TRASHCAN

There's a shop in Mustang, Oklahoma that repairs headers. The Nascar folks send them their best power making headers to repair after getting wrecked.... Have not talked to them in a while. Jim Hand's nephew works there, or may be part owner..........

Maybe they can fix OBX headers?

.

[HWYSTR455]

Originally Posted by Formulajones

It's on the side even. Not like it's on the bottom where it might of scraped driving on and off a ramp style chassis dyno.
How does that even happen on a chassis dyno?? Was that done with some odd way they strapped it down?

It looks like it went sideways on the rollers, and off the ramps. Maybe a strap broke.

.

[Formulajones]

Originally Posted by HWYSTR455

It looks like it went sideways on the rollers, and off the ramps. Maybe a strap broke.

.

Where did you see that? Is there a video?

[HWYSTR455]

Originally Posted by Formulajones

Where did you see that? Is there a video?

Because the dents are on the sides of the headers. I'm just guessing.

.

[Old Man Taylor]

Originally Posted by Formulajones

It's on the side even. Not like it's on the bottom where it might of scraped driving on and off a ramp style chassis dyno.
How does that even happen on a chassis dyno?? Was that done with some odd way they strapped it down?

I believe the no discernible performance difference at all. The pipes don't appear to be completely crushed and many people throughout the years would "clearance" headers to fit. I think everyone by now has seen the video of Freiburger smashing headers on a dyno to measure the difference, they hardly found any change.

Everything stayed strapped down, and the car stayed straight. There were some kind of vertical plates on the floor, I have no idea why. I didn't get a picture of them.

[Formulajones]

Originally Posted by Old Man Taylor

Everything stayed strapped down, and the car stayed straight. There were some kind of vertical plates on the floor, I have no idea why. I didn't get a picture of them.

Wow, thanks for the explanation Taylor. I would never have guessed something like that. I've never seen a chassis dyno with vertical plates.

[69f bird]

The Race Magnums are being replaced with Super Turbos today. I look forward to hearing the difference once done (and maybe hearing my radio and any conversations as well!)

[69f bird]

So far, so good. It was only a 5 mile drive home and I had the top up, but the exhaust tone is notably quieter...not quiet, but quieter! I like it. I didn't get over 45, and didn't really have a place to really get on it yet. Walking around the car, the tone is definitely more tame, not near as throaty, but still aggressive.

[Sprocket]

I currently run Goerlich Xlerators with a 2.5" mandrel bent x-pipe system with full tailpipes. Zero drone. Nice sounding idle. Pure sound at WOT. They are not the most exciting but quite frankly deliver performance without sounding terrible.

Two best sounding systems that I ever had were 2.5" Flowtech Terminators on my '70 GTO, and also some Flowmaster 2.5" 50-series (25 years ago) on my GP. Everybody, everywhere complimented me and wanted to know what exhaust I was running when I had the Flowmasters on my basically stock GP. On the street you want recognition, but at the track who gives a rats turd what it sounds like.

[Formulajones]

Sound and comfort on the street are the priorities for us. We don't want something that drones or is so loud that it attracts attention for a 6 block radius.

At the track if flow is a concern, a pair of cutouts will fix that