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Username Post: Adding dual exhaust 64 belair
shaunv8
Contributor
Posts 131
12-31-17 04:45 PM - Post#2719577    

Hi all, I have just installed a secondhand dual exhaust on my 64 belair which exits just in front of rear tyres. As this car only came with a single, we had to make some form of hangers for the underbody. The rear section is mounted with rubber, to the floor of the car. The question I have, is it OK to mount to floor, or should it be the chassis. I have a small "resonance / vibration" just above idle, and am thinking it may be coming through the body mounts on the exhaust. Any suggestions. No the exhaust isnt touching anywhere BTW. Thanks
pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
12-31-17 06:05 PM - Post#2719590    

The exhaust is never mounted to the body.

Factory exhaust is mounted to the frame using exhaust system mounts that bolt to factory holes already drilled in the frame.
I have pictures of all the factory mounts that are bolted to the frameon the drivers and passenger sides,that I can post when I get home later tomorrow.

These factory exhaust mounts are sold reproduction as a set or indiviually. The factory bolts are self tapping fine thread hex head bolts, also sold reproduction. All the mounts are bolted to two factory holes in the frame for each mount. There are 3 mounts per side.

Paul
57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

shaunv8
Contributor
Posts 131
12-31-17 06:36 PM - Post#2719598    

Thanks Paul, Ill get under and have a look. I know one side has, but the other doesnt as it was only a single exhaust. Cheers
pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
12-31-17 08:49 PM - Post#2719609    

The drivers side will match the passenger side.
The passenger side brackets will face the frame in the opposite direction.

The drivers side bracket directly behind the muffler could be welded to the frame (the passenger side will have two vertical holes in the frame for the bracket that has two holes in it for the hex head mounting bolts).
The other two brackets on the drivers side -the mount behind the tire uses 2 hex bolts to mount the bracket. The drivers side bracket (if its an orginal bracket) just behind the tire has one hex head bolt to mount the bracket.

Paul
57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-01-18 06:44 AM - Post#2719628    

Are you dead set on exiting the exhaust in front of the rear tires? I personally don't like that configuration because it makes for VERY loud and smelly exhaust. Exiting behind the rear wheels was OEM, straight out the back is popular.

Attached is how GM did it.

Pete

Attachment: chevy_exhaust_IMG_5229.jpg_800__494_pixels.pdf (119.26 KB) 76 Views


junky
Frequent Contributor
Posts 2343
01-01-18 07:07 AM - Post#2719632    

It is interesting to see that the left side isn't a mirror image of the right side past the axle. How was the exhaust on the station wagons exited? Might you have a diagram for the station wagon, like the one you have posted?
Never argue with an idiot. He'll drag you down to his level, then beat you with experience.

pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
01-01-18 08:28 AM - Post#2719643    

On the link the exhaust routing behind the rear axle to the bumper is not correct. All factory tailpipes for 61 to 64 Chevrolet’s exit behind the tires not at the rear bumper.

Paul
57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-01-18 09:52 AM - Post#2719670    

  • junky Said:
It is interesting to see that the left side isn't a mirror image of the right side past the axle. How was the exhaust on the station wagons exited? Might you have a diagram for the station wagon, like the one you have posted?



That link is directly from the 1961 shop manual and the manual does not have any differing info for a wagon (it does not mention the wagon exhaust at all). Also, the manual says (for '61) only the 348 (and the few 409s) got the dual exhaust. The 283s were all single exhaust. The '63 supplement shop manual does not show anything for the exhaust.

I agree with Paul that the diagram appears a little off at the rear exit point. On my '63 the exit is much closer to the rear wheel than depicted in that diagram. Other pics in the 61 shop manual show the tail pipe attachment to the frame better.

Pete
japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-01-18 10:10 AM - Post#2719675    

Junky,

I looked up the exhaust in my 63 assembly manual and that doc does show the mount bracket for the tail pipe on the driver side is a little different for the station wagon. I do not know if that applies other year cars.

The assembly manual also shows the exit point much more accurately than the shop manual diagram.

Pete
turbo38s10
"7th Year" Gold Supporting Member
Posts 1480
turbo38s10
01-01-18 01:31 PM - Post#2719697    

If you ask me I think it is just the way the picture was done. Looks like they took a frame picture and overlaid pictures of the exhaust on it. Just for reference and not really an accurate drawing. The frame asembly is faded versus the almost perfect exhaust parts.
junky
Frequent Contributor
Posts 2343
01-01-18 03:05 PM - Post#2719708    

Thanks for the "hint". I looked in my 1962 assembly manual, and found that the tail pipe for the wagon is different than for the rest of the cars, as well as the rear hanger. Unfortunately, my manual is missing page 4 of section 8, so I can't see the rest of the exhaust from the engine to the rear. I am inclined to believe that it is the same for the '63 & '64. I was particularly looking for the dual exhaust picture at the engine, so I could see what is needed to put my car back to original. My original exhaust was changed before I got the car.
Never argue with an idiot. He'll drag you down to his level, then beat you with experience.

japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-01-18 03:16 PM - Post#2719709    

Another 'hint'; take a look in the '409' section in the back the manual for the dual exhaust details. As I recall, that's where I found dual exhaust details in my '63 manual.

Meanwhile, I'll look in my '63 manual.

Pete
Verne_Frantz
61-64 Subject Matter Expert
Posts 5258
Verne_Frantz
01-01-18 07:27 PM - Post#2719735    

  • japete92 Said:
  • junky Said:
It is interesting to see that the left side isn't a mirror image of the right side past the axle. How was the exhaust on the station wagons exited? Might you have a diagram for the station wagon, like the one you have posted?



That link is directly from the 1961 shop manual and the manual does not have any differing info for a wagon (it does not mention the wagon exhaust at all). Also, the manual says (for '61) only the 348 (and the few 409s) got the dual exhaust. The 283s were all single exhaust. The '63 supplement shop manual does not show anything for the exhaust.

I agree with Paul that the diagram appears a little off at the rear exit point. On my '63 the exit is much closer to the rear wheel than depicted in that diagram. Other pics in the 61 shop manual show the tail pipe attachment to the frame better.

Pete



In '61, dual exhaust was an RPO on the 283.

Verne
models916
Valued Contributor
Posts 4702
01-02-18 05:51 AM - Post#2719759    

Show-cars has the hangers


https://www.show-cars.com/cgi-bin/commerce.cgi?pre...
pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
01-02-18 08:05 AM - Post#2719772    

  • models916 Said:


The 3 brackets on the right side of the picture (passenger side) can be purchased individually as
I noted above. All of these brackets can be purchased individually from Show Cars. They are exact duplicates of the originals and the zine plating keeps them from rusting...

Paul
57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
01-02-18 08:32 AM - Post#2719774    

Here are the dual exhaust tailpipe locations from my 62 Chevy Impala restoration a few years back. All 61 and 64 Chevys factory dual exhaust exited the same way. Factory single exhaust looked the same just minus the passenger side.

I added pictures of the drivers side mount directly behind the tire and the drivers side to the rear of the tire plus a picture of the two brackets behind the mufflers.

Paul



Attachment: _PVS420.jpg (796.09 KB) 8 Views
Attachment: P1030137.JPG (264.56 KB) 8 Views
Attachment: P1030138.JPG (270.18 KB) 10 Views
Attachment: DSCN4809.JPG (178.11 KB) 9 Views

57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

CATS 09
Forum Newbie
Posts 37
CATS 09
01-02-18 09:22 AM - Post#2719778    

In ref. to japete's post #2719628. That attachment picture "right from the 1961 shop manual", I think it's actually a picture of a 1959 car that was inaccurately posted in the 61 manual, reasons being; the tailpipe(s) on a 59 did go to the rear bumper like that, and also you look at the upper control arm attaching directly to the frame as it is in the pic, that is where the control arm is attached too,(59), and not to a cross connecting brace like it evolved into on Chevys shortly after that model year because of weakness issues with the original attaching point. CATS
CATS 09
Forum Newbie
Posts 37
CATS 09
01-02-18 09:30 AM - Post#2719779    

Oh and one more reason; the right hand tailpipe can't be a mirror image because the 59 spare tire well is located right there unlike in a 61 that is centered in the trunk and recessed.
Don't know about a 60.
Sweed62
Senior Member
Posts 1109
Sweed62
01-02-18 01:51 PM - Post#2719796    

Thanks for the picture P1030138.JPG Paul.

I did not know those holes was for exhaust system bracket.

I got a -62 Tarrytown two C-shapes frame like yours, i replaced the rear part of my frame but i didnt know theese holes was for exhaust system when i copied them.

My -62 holes are circular (picture below) while yours look slotted, differs between years and plant i guess, hence nuts behind your bolts i guess.

I did a quick check in assembly manual but i didnt find exhaust system, i check again.

Thanks/Svenne



pvs409
"6th Year" Gold Supporting Member
Posts 1977
pvs409
01-02-18 06:51 PM - Post#2719829    

Sveene,
The holes were horizontal for the exhaust mount to the rear of the tire, like the ones in your picture. The front hole is for a mounting tab on the exhaust bracket (to keep it from turning) and the rear hole is for the hex bolt.
See my picture -you can see the tab if you look closely you can see the tab in the frame hole.

I see the 2 vertical holes in your frame for the hex mounting bolts (in the picture ending in 137) behind the tire.

here is the bracket in my picture with this post. Note the tab and one mounting hole.
https://www.show-cars.com/cgi-bin/commerce.cgi?pre...

Paul


Attachment: DSCN0140.JPG (158.82 KB) 8 Views

57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4
62 ImpHT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible under frameoff
Website http://paulstensland.com/
[image]http://chevytalk.org/sm/26453.jpg[/ima

japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-03-18 09:14 AM - Post#2719875    

  • Verne_Frantz Said:
  • japete92 Said:
  • junky Said:
It is interesting to see that the left side isn't a mirror image of the right side past the axle. How was the exhaust on the station wagons exited? Might you have a diagram for the station wagon, like the one you have posted?



That link is directly from the 1961 shop manual and the manual does not have any differing info for a wagon (it does not mention the wagon exhaust at all). Also, the manual says (for '61) only the 348 (and the few 409s) got the dual exhaust. The 283s were all single exhaust. The '63 supplement shop manual does not show anything for the exhaust.

I agree with Paul that the diagram appears a little off at the rear exit point. On my '63 the exit is much closer to the rear wheel than depicted in that diagram. Other pics in the 61 shop manual show the tail pipe attachment to the frame better.

Pete



In '61, dual exhaust was an RPO on the 283.

Verne



You are correct (as usual). The shop manual * notes so state, too.

Thanks.

Pete

japete92
"4th Year" Silver Supporting Member
Posts 914
japete92
01-03-18 09:59 AM - Post#2719877    

  • junky Said:
Thanks for the "hint". I looked in my 1962 assembly manual, and found that the tail pipe for the wagon is different than for the rest of the cars, as well as the rear hanger. Unfortunately, my manual is missing page 4 of section 8, so I can't see the rest of the exhaust from the engine to the rear. I am inclined to believe that it is the same for the '63 & '64. I was particularly looking for the dual exhaust picture at the engine, so I could see what is needed to put my car back to original. My original exhaust was changed before I got the car.



Junky,

I've attached sheets 4 and 5 from my 63 assembly manual, and the two sheets from the '409' section that show dual exhaust.

Hope they are helpful.

Pete


Attachment: 63_single_exhaust_sheet_4_from_assembly_manual.pdf (370.32 KB) 20 Views
Attachment: 63_dual_exhaust_2nd_sheet_from_assembly_manual.pdf (327.14 KB) 25 Views
Attachment: 63_dual_exhaust_1st_sheet_from_assembly_manual.pdf (316.33 KB) 30 Views
Attachment: 63_single_exhaust_sheet_5_from_assembly_manual.pdf (328.02 KB) 20 Views


junky
Frequent Contributor
Posts 2343
01-03-18 06:55 PM - Post#2719928    

Thanks.. It has added a lot of clarity as to what is the same and what is different on the wagons. Now, I am going to need to beat the bushes to find the wagon specific parts for my car. thanks again Junk
Never argue with an idiot. He'll drag you down to his level, then beat you with experience.

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