Aftermarket exhaust manifolds - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**oldwagon** · 01-14-2014, 03:07 PM

I know there is a thread on here somewhere because I ran across it awhile back. My left header has a hole in it, so I need to replace the headers or install the stock manifolds. I'm pretty sure I want to go with the stock manifolds. Would someone please help me out? Thanks.

cory d · 01-14-2014, 03:35 PM

why go back to manifolds? you can probably buy a set of the headers off craigslist for dirt cheap

donut · 01-14-2014, 06:27 PM

New manifolds are available through local auto parts stores. Or check the forum classifieds for someone parting one.

Tx Firefighter · 01-14-2014, 07:40 PM

I bought a set from Rockauto a while back. They killed my local parts store. Bottom line, 80 bucks cheaper than buying them locally for Dorman brand manifolds.

**old Rusty C10** · 01-14-2014, 09:59 PM

What year is your truck? Im not sure if I threw the set out I had last scrap run or I kept them If I have them I will give them to you for the cost of shipping

Pyrotechnic · 01-14-2014, 10:55 PM

If your exhaust isn't set up for the manifolds that should have come with the truck and you will be needing exhaust work anyway, look into the 2.5 inch outlet corvette rams horn manifolds. They flow much better than what came stock on these trucks and would be a very worthwhile upgrade.

**oldwagon** · 01-15-2014, 02:15 PM

Thanks for the input, guys. My dooly is an 83 1 ton, 454, 4-speed, 4x4. I really think it's going to be a toss-up as to which way I go on the truck.

Bob, let me know if you run across them.

Kevin, I'll check out Rockauto.

Thanks again, guys!

Veryl

Tx Firefighter · 01-15-2014, 04:06 PM

The manifolds I spoke above were for my 454 dually. These are the Rockauto sourced Dorman brand manifolds. They're actually thicker than the original GM ones were.

cadillac_al · 01-15-2014, 08:41 PM

Quote:

Originally Posted by Tx Firefighter

The manifolds I spoke above were for my 454 dually. These are the Rockauto sourced Dorman brand manifolds. They're actually thicker than the original GM ones were.

They just had to cast that china on there didn't they. It looks like it should grind off easy enough.

Tx Firefighter · 01-15-2014, 08:46 PM

Quote:

Originally Posted by cadillac_al

They just had to cast that china on there didn't they. It looks like it should grind off easy enough.

I know, I know. Sucks. I try to never buy Chinese but Dorman is basically the only game on town on these things.

On the bright side though, look at the flange there by the word China and compare how much thicker it is than the GM manifold.

Big Port Jimmy 6 · 01-15-2014, 09:24 PM

http://www.sandersonheaders.com/Sand...eader-Set.html

Spendy but nice. I had a small block set for a while. Jay

**oldwagon** · 01-15-2014, 09:45 PM

Thanks, Kevin for the pics. I checked Rockauto and I'm pretty impressed with the cost.

01-14-2014, 03:07 PM	#1
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Aftermarket exhaust manifolds I know there is a thread on here somewhere because I ran across it awhile back. My left header has a hole in it, so I need to replace the headers or install the stock manifolds. I'm pretty sure I want to go with the stock manifolds. Would someone please help me out? Thanks.

01-14-2014, 03:35 PM	#2
cory d Registered User Join Date: Dec 2011 Location: Arlington WA Posts: 1,728	Re: Aftermarket exhaust manifolds why go back to manifolds? you can probably buy a set of the headers off craigslist for dirt cheap __________________ GMC C15 355 SM465 3.73 80 C10 cruiser build thread 79 short stepside crew cab. big and ugly. build thread

01-14-2014, 06:27 PM	#3
donut Registered User Join Date: Aug 2009 Location: S.C. Posts: 1,593	Re: Aftermarket exhaust manifolds New manifolds are available through local auto parts stores. Or check the forum classifieds for someone parting one. __________________ '86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ) I'm kinda like duct tape- no real purpose, but handy to have around.

01-14-2014, 07:40 PM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Aftermarket exhaust manifolds I bought a set from Rockauto a while back. They killed my local parts store. Bottom line, 80 bucks cheaper than buying them locally for Dorman brand manifolds. __________________ I'm on the Instagram- @Gearhead_Kevin

01-14-2014, 09:59 PM	#5
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: Aftermarket exhaust manifolds What year is your truck? Im not sure if I threw the set out I had last scrap run or I kept them If I have them I will give them to you for the cost of shipping __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

01-14-2014, 10:55 PM	#6
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: Aftermarket exhaust manifolds If your exhaust isn't set up for the manifolds that should have come with the truck and you will be needing exhaust work anyway, look into the 2.5 inch outlet corvette rams horn manifolds. They flow much better than what came stock on these trucks and would be a very worthwhile upgrade. __________________ 1977 GMC Sierra Grande

01-15-2014, 02:15 PM	#7
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Re: Aftermarket exhaust manifolds Thanks for the input, guys. My dooly is an 83 1 ton, 454, 4-speed, 4x4. I really think it's going to be a toss-up as to which way I go on the truck. Bob, let me know if you run across them. Kevin, I'll check out Rockauto. Thanks again, guys! Veryl

01-15-2014, 04:06 PM	#8
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Aftermarket exhaust manifolds The manifolds I spoke above were for my 454 dually. These are the Rockauto sourced Dorman brand manifolds. They're actually thicker than the original GM ones were. __________________ I'm on the Instagram- @Gearhead_Kevin

01-15-2014, 09:24 PM	#11
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: Aftermarket exhaust manifolds http://www.sandersonheaders.com/Sand...eader-Set.html Spendy but nice. I had a small block set for a while. Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

01-15-2014, 09:45 PM	#12
oldwagon Registered User Join Date: Feb 2003 Location: Mulvane, Ks. Posts: 756	Re: Aftermarket exhaust manifolds Thanks, Kevin for the pics. I checked Rockauto and I'm pretty impressed with the cost.



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