What is this under the truck? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LostMy65 · 06-19-2021, 04:24 PM

What is it?

**cwcarpenter98** · 06-19-2021, 04:26 PM

Wasn't that something old hot rods had so that you could have straight pipes at the drag strip but mufflers on the street? I wasn't around back then, so I don't know for sure

LostMy65 · 06-19-2021, 06:09 PM

You know, I was thinking that a little after I posted. I think you may be correct.

**mongocanfly** · 06-19-2021, 07:03 PM

it was... a lot of guys ran those way back when i was in high school

**Steeveedee** · 06-19-2021, 08:06 PM

Yup, "cutouts", and I am definitely old enough to remember them. I remember when the '70 GTO came out, there was an early commercial touting cutouts on them. That got a quick kibosh by the gov, as the control was dash-mounted, thus unlawful.

Here's the commercial for "The Humbler".

https://www.youtube.com/watch?v=7JNj9sEdPF0

**The Rocknrod** · 06-19-2021, 09:30 PM

I remember that commercial.

That was a vacuum actuated baffle on the mufflers: http://justacarguy.blogspot.com/2016...t-cutouts.html

**Getter-Done** · 06-19-2021, 10:16 PM

Yeah
They make electric actuated ones now.

With Key Fob's

What fun is that

I had a set at one time.

.

Lokin4AReason · 06-19-2021, 10:19 PM

As mentioned , its cutouts
Re runs the exhaust
Just unbolt the cover and your go to go . . .

**Clyde65** · 06-20-2021, 07:30 AM

Exhaust dump is the term I remember, I had those on my 68 Cutlass BB 4 speed. Shot flames out on start up!

**MT65** · 06-20-2021, 10:04 AM

😂😂😂😂😂😂this is the most age defining post ever, and yes I remember them….😉😉😉😉

LostMy65 · 06-20-2021, 10:20 AM

Quote:

Originally Posted by cwcarpenter98

Wasn't that something old hot rods had so that you could have straight pipes at the drag strip but mufflers on the street? I wasn't around back then, so I don't know for sure

I guess you and I are the young whippersnappers in this thread.

**cwcarpenter98** · 06-20-2021, 10:42 AM

Quote:

Originally Posted by LostMy65

I guess you and I are the young whippersnappers in this thread.

Looks like it!

forestb · 06-21-2021, 03:47 PM

Comment from another whippersnapper. Just think, one day the current dodge commercials are going to look just as dated. Especially the brotherhood of muscle ones.

hank scorpio · 06-21-2021, 06:34 PM

Quote:

Originally Posted by Steeveedee

Yup, "cutouts", and I am definitely old enough to remember them. I remember when the '70 GTO came out, there was an early commercial touting cutouts on them. That got a quick kibosh by the gov, as the control was dash-mounted, thus unlawful.

Here's the commercial for "The Humbler".

https://www.youtube.com/watch?v=7JNj9sEdPF0

That was actually a factory option!

**Steeveedee** · 06-21-2021, 08:19 PM

Quote:

Originally Posted by hank scorpio

That was actually a factory option!

Yup! Crazy, right? Those factory guys secretly testing their mules on Woodward Blvd back then weren't too concerned about other state's laws.

61K10 · 06-23-2021, 03:44 PM

had them on my 56 chevy and like clyde65 said we called them dumps. They didn't stick out like the pic. I had them on a 327 with 2 1/2" ram horns right at the curve (pain to remove the caps) was the car any faster, probably not. Sure thought is was at 17 back in 66/67.
fun times, we went in a straight line not donuts!

LostMy65 · 06-23-2021, 04:04 PM

"Took the header plugs off, eh? Expectin' some action?"
https://youtu.be/xe_oo62xJEU

06-19-2021, 04:24 PM	#1
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	What is this under the truck? What is it? Attached Images __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

06-19-2021, 04:26 PM	#2
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: What is this under the truck? Wasn't that something old hot rods had so that you could have straight pipes at the drag strip but mufflers on the street? I wasn't around back then, so I don't know for sure __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

06-19-2021, 06:09 PM	#3
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: What is this under the truck? You know, I was thinking that a little after I posted. I think you may be correct. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

06-19-2021, 07:03 PM	#4
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,671	Re: What is this under the truck? it was... a lot of guys ran those way back when i was in high school __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

06-19-2021, 08:06 PM	#5
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,698	Re: What is this under the truck? Yup, "cutouts", and I am definitely old enough to remember them. I remember when the '70 GTO came out, there was an early commercial touting cutouts on them. That got a quick kibosh by the gov, as the control was dash-mounted, thus unlawful. Here's the commercial for "The Humbler". https://www.youtube.com/watch?v=7JNj9sEdPF0 __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

06-19-2021, 09:30 PM	#6
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: What is this under the truck? I remember that commercial. That was a vacuum actuated baffle on the mufflers: http://justacarguy.blogspot.com/2016...t-cutouts.html __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

06-19-2021, 10:16 PM	#7
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 8,418	Re: What is this under the truck? Yeah They make electric actuated ones now. With Key Fob's What fun is that I had a set at one time. . __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

06-19-2021, 10:19 PM	#8
Lokin4AReason Registered User Join Date: Oct 2014 Location: somewhere . . . Posts: 974	Re: What is this under the truck? As mentioned , its cutouts Re runs the exhaust Just unbolt the cover and your go to go . . . __________________ dont want to hear excuses, i want to hear solution(s)

06-20-2021, 07:30 AM	#9
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: What is this under the truck? Exhaust dump is the term I remember, I had those on my 68 Cutlass BB 4 speed. Shot flames out on start up! __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

06-20-2021, 10:04 AM	#10
MT65 Senior Member Join Date: Sep 2020 Location: Kila mt Posts: 445	Re: What is this under the truck? 😂😂😂😂😂😂this is the most age defining post ever, and yes I remember them….😉😉😉😉

06-21-2021, 03:47 PM	#13
forestb Registered User Join Date: Jan 2009 Location: Burbank, CA Posts: 3,619	Re: What is this under the truck? Comment from another whippersnapper. Just think, one day the current dodge commercials are going to look just as dated. Especially the brotherhood of muscle ones. Last edited by forestb; 06-21-2021 at 06:44 PM.

06-23-2021, 03:44 PM	#16
61K10 Registered User Join Date: Feb 2012 Location: pleasant valley--placerville ca Posts: 3,039	Re: What is this under the truck? had them on my 56 chevy and like clyde65 said we called them dumps. They didn't stick out like the pic. I had them on a 327 with 2 1/2" ram horns right at the curve (pain to remove the caps) was the car any faster, probably not. Sure thought is was at 17 back in 66/67. fun times, we went in a straight line not donuts! __________________ 1961 chevy K10 my build is------------61K10 build

06-23-2021, 04:04 PM	#17
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: What is this under the truck? "Took the header plugs off, eh? Expectin' some action?" https://youtu.be/xe_oo62xJEU __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 06-23-2021 at 04:13 PM.



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