Help! Bolt in exhaust pass through? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

the ideaman · 11-11-2018, 11:32 AM

I've seen these here on several member's trucks. They bolt into the crossmember and allow the exhaust to pass through. Can somebody tell me the company that make these? Thanks in advance.

Zeroman · 11-11-2018, 11:36 AM

Dead End Garage

https://azproperformance.com/product...outs-63-72-c10

PepperTreeGarage · 11-11-2018, 04:11 PM

Brothers also has them.
https://www.brotherstrucks.com/63-72...tinfo/ECOB072/

**70STOVEBOLT** · 11-11-2018, 05:39 PM

Unless you have 1000 HP you don’t need them

**HO455** · 11-11-2018, 07:03 PM

Quote:

Originally Posted by 70STOVEBOLT

Unless you have 1000 HP you don’t need them

I'm not sure of your logic here. Can you explain further?

**Grumpy old man** · 11-11-2018, 07:09 PM

I'm pretty sure he's talking about frame twist without bolting or welding in tube support after cutting cross member . I just cut 4" holes and welded in tube support total cost was $20.00 for the tube . A lot of these old trucks have "chevy twist" in the frame with stock engines ,So throwing a 1000 at a stock frame holes or not will probably have the frame looking like a pretzel .

**70STOVEBOLT** · 11-11-2018, 07:39 PM

There is a member here, can’t recall his handle, that cut holes in his crossmember and has been running it that way for several years without reinforcement and he has a healthy big block IIRC. I cut 3” holes in mine instead of 4” and don’t plan on reinforcing it.

un4gvn! · 11-11-2018, 07:44 PM

All I did was hole sawed two 3" holes in the cross member with out welding any thing. I use 3" exhaust which was a very tight fit and the holes act as the hangers. I'm throwing at least 600 hp through the pipes and my frame still looks good. The paint isn't even burning off.

**truckster** · 11-11-2018, 08:29 PM

Quote:

Originally Posted by Grumpy old man

I'm pretty sure he's talking about frame twist without bolting or welding in tube support after cutting cross member . I just cut 4" holes and welded in tube support total cost was $20.00 for the tube . A lot of these old trucks have "chevy twist" in the frame with stock engines ,So throwing a 1000 at a stock frame holes or not will probably have the frame looking like a pretzel .

I think that looks way more solid than a bolt-in piece. It looks like the crossmember was made that way.

11-11-2018, 11:32 AM	#1
the ideaman Registered User Join Date: May 2009 Location: Central Valley,ca Posts: 174	Help! Bolt in exhaust pass through? I've seen these here on several member's trucks. They bolt into the crossmember and allow the exhaust to pass through. Can somebody tell me the company that make these? Thanks in advance.

11-11-2018, 11:36 AM	#2
Zeroman Registered User Join Date: Mar 2013 Location: Houston, TX Posts: 348	Re: Help! Bolt in exhaust pass through? Dead End Garage https://azproperformance.com/product...outs-63-72-c10

11-11-2018, 04:11 PM	#3
PepperTreeGarage Registered User Join Date: Jan 2014 Location: SoCal Posts: 281	Re: Help! Bolt in exhaust pass through? Brothers also has them. https://www.brotherstrucks.com/63-72...tinfo/ECOB072/ Attached Images

11-11-2018, 05:39 PM	#4
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,212	Re: Help! Bolt in exhaust pass through? Unless you have 1000 HP you don’t need them __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Coming soon: EFI 2015 Silverado 1500 LS 4.3/6L80/3.23

11-11-2018, 07:09 PM	#6
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Help! Bolt in exhaust pass through? I'm pretty sure he's talking about frame twist without bolting or welding in tube support after cutting cross member . I just cut 4" holes and welded in tube support total cost was $20.00 for the tube . A lot of these old trucks have "chevy twist" in the frame with stock engines ,So throwing a 1000 at a stock frame holes or not will probably have the frame looking like a pretzel . Attached Images __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

11-11-2018, 07:39 PM	#7
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,212	Re: Help! Bolt in exhaust pass through? There is a member here, can’t recall his handle, that cut holes in his crossmember and has been running it that way for several years without reinforcement and he has a healthy big block IIRC. I cut 3” holes in mine instead of 4” and don’t plan on reinforcing it. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Coming soon: EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 Last edited by 70STOVEBOLT; 11-12-2018 at 11:41 AM.

11-11-2018, 07:44 PM	#8
un4gvn! Registered User Join Date: Mar 2006 Location: Latrobe, Pa. 15650 Posts: 341	Re: Help! Bolt in exhaust pass through? All I did was hole sawed two 3" holes in the cross member with out welding any thing. I use 3" exhaust which was a very tight fit and the holes act as the hangers. I'm throwing at least 600 hp through the pipes and my frame still looks good. The paint isn't even burning off.



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