Exhaust TECH Mufflers, Headers and Pipes Issues

          
Reply
 
Thread Tools Display Modes
  #1  
Old 03-08-2018, 10:56 AM
mrrat1 mrrat1 is offline
Ultimate Warrior
 
Join Date: Jan 2004
Location: Shamong NJ
Posts: 1,840
Default which way to go with 79 Formula 400 Pontiac?

RA III manifolds, Headers, or stock log manifolds? True duals or factory cross flow set up? Car will be sold when finished. Would like to know which you guys think would be best for resale value.

  #2  
Old 03-08-2018, 12:38 PM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 21,706
Default

Headers drops the market and depends on how original the rest of the car is as far as the stock logs or RA/HOs.

__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
  #3  
Old 03-08-2018, 02:10 PM
ponchjoe's Avatar
ponchjoe ponchjoe is offline
Ultimate Warrior
 
Join Date: May 2003
Location: South of the Indy 500
Posts: 3,048
Default

Who’s your intended sales audience? That would dictate the mods you install. RA manifolds cannot be disputed by any buyer and adds eye candy but only a slight performance gain.
Headers would be tied to performance upgrades to take advantage, cam, intake, etc

__________________
The More People I Meet, The More I Love My Dogs!
  #4  
Old 03-08-2018, 08:12 PM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 21,706
Default

The most money at least at the auctions are factory original appearance.

My 81 fairly stock 400 in it has RA/HO manifolds on it true duals. The W72 had true duals (other than a single convertor first) so they are "correct" and the only way a 79 would have a 400 from the factory.

__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
  #5  
Old 03-08-2018, 08:30 PM
goatless's Avatar
goatless goatless is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: Newtown,CT
Posts: 4,592
Default

How is the rest of the car being finished? If it's mostly stock looking, I'd just put on logs and then duals. Since you're just going to sell it, why spend money that won't bring a return?

__________________
1966 GTO
1969 Lemans Convertible- F.A.S.T. legal family cruiser. 12.59 on G70-14 Polyglas tires. 1.78 60'
1969 Bonneville Safari- cross country family cruiser. .
1979 Trans Am 400, 4-speed, 4 wheel disc.

View from the drivers seat racing down Atco Raceway- http://www.youtube.com/watch?v=GhYDMdOEC7A

Ride along in the other lane-http://www.youtube.com/watch?v=mIzgpLtF_uw
  #6  
Old 03-09-2018, 05:53 PM
mrrat1 mrrat1 is offline
Ultimate Warrior
 
Join Date: Jan 2004
Location: Shamong NJ
Posts: 1,840
Default

Thanks Guys........Probably go with logs or RA manifolds. It's going to be a stock appearing Formula. Not original motor or trans but will look factory under the hood.

  #7  
Old 03-09-2018, 06:48 PM
Formulajones's Avatar
Formulajones Formulajones is online now
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 11,920
Default

As far as exhaust goes on these cars, I prefer the transverse muffler setups. I just really don't like seeing these cars with a pair of mufflers hanging down. When it comes to buying Fbodies or Xbodies, if it doesn't have a tranverse system on it, then that's one of the first things on the list to change and figured into the price.

Some buyers won't care. Probably a 50/50 shot either way but in your case I'd just do what works for your pocket book since you're selling anyway.

  #8  
Old 03-09-2018, 06:54 PM
mrrat1 mrrat1 is offline
Ultimate Warrior
 
Join Date: Jan 2004
Location: Shamong NJ
Posts: 1,840
Default

I don't like the exhaust hanging down either......the cars are low enough already. I want the car to appeal to the largest crowd possible! Originally a 403 auto car, Atlantis blue with white interior. I like the looks of dark blue as the color around the bottom of the car. So might tinker with that idea.

  #9  
Old 03-09-2018, 06:56 PM
Formulajones's Avatar
Formulajones Formulajones is online now
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 11,920
Default

Color combo sounds sweet. Love white interiors. I'll bet that stands out in a crowd.

  #10  
Old 03-09-2018, 08:25 PM
goatless's Avatar
goatless goatless is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: Newtown,CT
Posts: 4,592
Default

I'm a fan of the transverse set up, as well. It's what I have on my '79. A car that is low by it's nature combined with my aggressive driving and bumpy, twisty roads make a need for as much ground clearance as possible. But... if I were just putting it up for sale, regular duals are cheaper.

__________________
1966 GTO
1969 Lemans Convertible- F.A.S.T. legal family cruiser. 12.59 on G70-14 Polyglas tires. 1.78 60'
1969 Bonneville Safari- cross country family cruiser. .
1979 Trans Am 400, 4-speed, 4 wheel disc.

View from the drivers seat racing down Atco Raceway- http://www.youtube.com/watch?v=GhYDMdOEC7A

Ride along in the other lane-http://www.youtube.com/watch?v=mIzgpLtF_uw
  #11  
Old 03-11-2018, 09:06 AM
77 Canamman's Avatar
77 Canamman 77 Canamman is offline
Ultimate Warrior
 
Join Date: Aug 2006
Location: PA
Posts: 4,022
Default

The transverse system is the way to go, but if you select the Pypes system, it is not a simple bolt on install!

__________________
1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey

1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles

2017 Sierra SLT 1500 Z71 4X4

2019 Canyon SLT Crew 4X4

  #12  
Old 03-12-2018, 11:54 PM
sts sts is offline
Suspended
 
Join Date: Jan 2006
Posts: 847
Default

X3 on not liking an exhaust system dragging on the pavement. With as many drag-on-the ground systems around, lots of people must think it looks cool.
Attached Thumbnails
Click image for larger version

Name:	1.jpg
Views:	139
Size:	73.2 KB
ID:	477977   Click image for larger version

Name:	6.jpg
Views:	131
Size:	86.4 KB
ID:	477978   Click image for larger version

Name:	7.jpg
Views:	124
Size:	79.1 KB
ID:	477979  

  #13  
Old 03-13-2018, 09:25 AM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 21,706
Default

But remember the W72s -which if a 400 in 79- all had duals not a transverse.

__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
  #14  
Old 03-13-2018, 11:05 AM
Formulajones's Avatar
Formulajones Formulajones is online now
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 11,920
Default

Quote:
Originally Posted by sts View Post
X3 on not liking an exhaust system dragging on the pavement. With as many drag-on-the ground systems around, lots of people must think it looks cool.
That one looks better than most I see. If a small enough muffler is used and someone takes the time to tuck it up tightly, it can be done and still be aesthetically appealing. Just not a lot of floor pan room in that area on an F-body to give you much wiggle room. Rarely will I see one tucked up that well, and they usually don't last long on the roads and lots around here.

  #15  
Old 06-04-2018, 12:34 PM
Formula jg Formula jg is offline
Chief Ponti-yacker
 
Join Date: Aug 2004
Posts: 820
Default

2nd Gen factory duals were not installed level to the ground. Instead the long side of mufflers that were closest to driveshaft were angled up tighter to the floor, it looks great when viewing from the rear and provides slightly more ground clearance.

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:30 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017