The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-17-2012, 05:12 PM   #1
JJorgensen52
Simple? What's simple?
 
JJorgensen52's Avatar
 
Join Date: Apr 2007
Location: Southeast CT
Posts: 1,472
K10 owners - exhaust routing?

My truck has a REALLY poorly made replacement exhaust system on it, and when I refresh the motor soon I'm going mto make a new system.

Can someone post up pictures of what the stock 4x4 exhaust system looks like? I'm trying to figure out how it should be routed.

I don't have a picture, but my current passenger's exhaust comes off the manifold and runs straight back to the bellhousing, then goes 90 degrees left and straight into the driver's pipe. It goes below the front driveshaft to do this, so it hangs a good 4" lower than any other part of the chassis (basically as low as the front pumpkin)

I'm intending to do 2.5" primary tubes to a merge on the driver's side alongside the transmission, and then a 3" pipe the rest of the way to the stock exit. With the NP241/NV4500 combo, there isn't enough room to snake a pipe past the transfer case and cross over behind the cab. I'm thinking at this point about routing the passenger's primary forward, under the motor below the stock crossmember and meeting the driver's primary right below the manifold dump.

Any suggestions or anyone who's done something similar?
__________________
CURRENT
'50 GMC 100 shortbed Gen IV 4.8 LS - 4L65E (Secret truck, Shhh!!!) Build
'63 Buick Wildcat Coupe 401ci Nailhead (Very much in pieces) Photos
'66 Impala SS convertible 327-QJet-glide (4 speed swap one of these days...) Photos
'69 CST/10 4x4 SWB Stepper 350 2bbl - NV4500/NP241C (Broken Truck!)
'72 Sierra Grande 2WD LWB fleetside 350-TH350 Refresh
'99 K2500 Silverado RCLB 5.7 Vortec - NV4500/NP241C (Daily)
'99 K2500 Suburban 7.4 Vortec - NV4500/NP246 (still working out the bugs)
SOLD
'71 Custom/10 2WD LWB fleetside - '72 GMC K/3500 Dually (Sold to redryder)
JJorgensen52 is offline   Reply With Quote
Old 04-18-2012, 07:47 AM   #2
mrein3
Registered User
 
mrein3's Avatar
 
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
Re: K10 owners - exhaust routing?

Quote:
Originally Posted by JJorgensen52 View Post
My truck has a REALLY poorly made replacement exhaust system on it, and when I refresh the motor soon I'm going mto make a new system.

Can someone post up pictures of what the stock 4x4 exhaust system looks like? I'm trying to figure out how it should be routed.

I don't have a picture, but my current passenger's exhaust comes off the manifold and runs straight back to the bellhousing, then goes 90 degrees left and straight into the driver's pipe. It goes below the front driveshaft to do this, so it hangs a good 4" lower than any other part of the chassis (basically as low as the front pumpkin)

I'm intending to do 2.5" primary tubes to a merge on the driver's side alongside the transmission, and then a 3" pipe the rest of the way to the stock exit. With the NP241/NV4500 combo, there isn't enough room to snake a pipe past the transfer case and cross over behind the cab. I'm thinking at this point about routing the passenger's primary forward, under the motor below the stock crossmember and meeting the driver's primary right below the manifold dump.

Any suggestions or anyone who's done something similar?
Your current system sounds like the stock, single exhaust routing. I HAD that system on my truck when I got it. While deer hunting one fall I got shall we say "hung up" and didn't know until my next oil change that I bent the exhaust in such a way that I had to drop it to get the oil filter off.
Needless to say that couldn't remain that way for long. I also was accumulating parts to switch my 3-speed manual jammer er I mean manual transmission out for a th350 and there was no way that system was going back on after taking it off to get the trans/adapter/t-case switched.
Long story short I went the the dual exhaust kit in the LMC catalog. I didn't know it at the time but what I ordered from LMC came drop shipped from a company here in MN called Heartthrob Exhaust. http://www.heartthrobexhaust.com/

This "kit" had everything I needed to hook up to my stock exhaust manifolds in the box except for a hanger on the side that didn't have exhaust running back from the factory. Rather than pay $1,000,000.00 for a stock hanger from a big block truck I paid around $2.59 for a generic hanger from NAPA.

The exhaust has been on there since November of 2001. I've replaced the mufflers once.

The pictures are from my ipod phone and resized on there so they aren't that great. The passenger side is REAL close to the t-case but doesn't hit or rattle when I drive. It looks like it hits in the pictures but it does not.

I would use this exhaust system again if I had to.

And yes my speedo cable output o-ring needs to be replaced.
Attached Images
  
__________________
'70 cab, '71 chassis, 383, TH350, NP205.
'71 Malibu convertible
'72 Malibu hard top
Center City, MN
mrein3 is offline   Reply With Quote
Old 04-18-2012, 10:23 AM   #3
71 super
Registered User
 
71 super's Avatar
 
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
Re: K10 owners - exhaust routing?

I used same kit on my 72 k10 except purchased from auto anything and recieved free shipping- i think $168 to the house. I had an extra stock hanger but other than that it was a pretty easy bolt on.
__________________
67 blue step side- bb
68 gold and white swb cst anniversary
68 custom swb hot rod Ls swap
69 swb cst 6 cylinder/ overdrive
69 black/black cst bb swb
70 orange and white cst Canada built truck swb bb
71 black and white super swb bb
71 red and white super swb
72 green and white super swb 4x4
62 nova wagon 400 series Ls swapped
68 Camaro 327/4 speed- 1 owner, original paint
66 Volkswagen bettle
69 auto stick Volkswagen Beetle
71 super is offline   Reply With Quote
Reply

Bookmarks


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 08:28 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com