stingrayiii67

Now I don't have PS (stock gearbox), but it fit in perfect so no dimple! Yes, the drivers side does stick out more and you notice it while installing. But after that you don't notice it, and if you were walking by it you wouldn't notice it at all. Only you will know it does as you can't see both sides at once.

Golfobsessed

thanks, I spoke with Borgeson yesterday and he said he has heard the same but no other details, the Borgeson box is a bit larger over the stock box, I also talked with Summit and absolutely no help at all, he couldn't help with Hooker vs Dougs, chrome vs ceramic and absolutely zero information on inserts... i was surprised at the lack of knowledge in their product information support team.
I am going Doug's ceramic with mid glass pack inserts, will install leaving original box in place to see how close and measure box size difference... dont want to fight header install.

Thanks again.

stingr69

You will probably need to dimple the pipes a bit to fit the stock steering box as I found on my car. One place at the box and one place by the pittman arm. I did a trial fit and marked it with a sharpie. Hit it with a large socket and a hammer is what I had to do. Not much denting required. The chrome was not obviously damaged in my case but ceramic might be another story.

wwiiavfan

I’m surprised you are going with the glass packs. I’ve always felt glass packs give the exhaust a “fluff” or softened tone at low rpm and a “rappy” sound under load/higher rpm.
The chambered exhaust gives you that deeper tone. I only have a low compression small block, but everyone thinks I have a big block!

stingrayiii67

I agree chambered is the way to go!
https://youtube.com/shorts/Jrp3ELbe1...9AdiMGRF-vpr0b
The sound a WOT

Golfobsessed

I only settled on the glass pack insert as its the mid option and I couldn't get any info at all concerning inserts from Summit, frankly I want a deeper sound with less rap harshness... I would also prefer not crazy loud, now I'm back so searching inserts, hard to find sound bites.
thanks you, im gonna look into your recommendation

Golfobsessed

ok... I'm looking at chambered now, thank you

stingr69

STS baffles are another option. Definitely different in a more raspy, sharp kind of way. Sorry, I don't have a clip of those but they are out there.

wwiiavfan

Go back to post #29, that’s my ‘71 350 with (really old) Dougs and new Classic Chambered Vettepacks.

Golfobsessed

thank you, I seen that video and frankly the Doug's glass packs sounded good, a bit more mellow, trying to stay away from obnoxious loud... recently had a Backdraft Cobtra which was a blast but too loud, I am looking into chambered and also the STS, when I get settled in this evening gonna search as many videos as I can, trying to balance between robbing power and too loud.

Golfobsessed

yeah that sounds good and surely gonna flow better for my stock L48

Lawdog74

Agreed....thanks

Lawdog74

Can you tell me the brand and model of your pipes and the headers please?

augiedoggy

Thers a youtube video of a borgeson install on a car with sidepipes and even though the box is larger there was more clearance with the borgeson than the stock box. I have one but it hasnt been installed yet.

Golfobsessed

I'm ordering Doug's D380 and D930 headers and pipes both in ceramic

Golfobsessed

thank you, from all that I read and watch it's hit or miss weather Dougs, Hooker or OBX.
Between the differences in all corvette measurements as well as the header specs some fit right in no problems and some need to be dimpled at the steering box.
I am going to install the headers with the original box then see my clearance.