Rams Horn Exhaust Manifolds - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71ChevyCheyenne · 06-28-2017, 11:36 PM

Hey guys, I recently put together a vortec sbc. After doing this I decided to change from my old headers with holes in them to rams horn exhaust manifolds(the corvette style ones). After putting the manifolds on I brought the truck to an exhaust shop and they said they were unable to put exhaust on the truck. This was due to there being no clearance on the passenger side for a pipe they said. Could this be right? Looking in there it looks like there's plenty of room. I know there are guys on here that are running rams horns on their trucks so I'm just curious how to route the exhaust. Thanks

71meangreenc10 · 06-28-2017, 11:44 PM

If it is the ones that has a dump that is straight down, I had the same issue. No shop could make the bend with what they had. I ordered correct ones from LMC and they were solid.

Smitty

El Dorado Jim · 06-28-2017, 11:53 PM

I run the center dump ram horns on my 72,with a 350, it is 4 wheel drive, that may make a difference?

71ChevyCheyenne · 06-29-2017, 12:23 AM

Quote:

Originally Posted by 71meangreenc10

If it is the ones that has a dump that is straight down, I had the same issue. No shop could make the bend with what they had. I ordered correct ones from LMC and they were solid.

Smitty

Can you give me a part number? Also I found the stock center dumps with an angle but I can't find any the right size. I'm going with 2 1/2" exhaust.

B Myers · 06-29-2017, 08:04 AM

I installed the straight down dump 2 1/2" collector corvette manifolds on my '71 350 C-10 last year. I made the pipe myself piece by piece and routed around the frame and starter getting down to the normal type of setup but it is tight, however I have good flowing exhaust out of cast rams horn manifolds that look stock.

**LockDoc** · 06-29-2017, 09:37 AM

Quote:

Originally Posted by 71ChevyCheyenne

Can you give me a part number? Also I found the stock center dumps with an angle but I can't find any the right size. I'm going with 2 1/2" exhaust.

I'm not 100% sure, but I don't think there is a 2 1/2" with the angled dump.

LockDoc

eric67c10 · 06-29-2017, 10:22 AM

I have corvette style ram horns with straight down with 350 on 67, I am running the heat riser, not a problem.

*randy500* · 06-29-2017, 12:10 PM

Straight dumps are a very tough fit on 2wd as he engine frame mount and starter interfere. They fit easily on a 4wd.
2wd angle dumps which are stock do not come in 2.5, just 2.25 or whatever they are.
So to make it easy use the 2wd angle dumps and start the down pipes in 2.25 hen increase size to 2.5 as soon as practical, every truck with 2.5 exhaust has it done this way with stock manifolds.
I recently parted a 2wd that had straight dumps and 2.25 inch pipes, they trimmed the engine frame stands to get that to fit.

06-28-2017, 11:36 PM	#1
71ChevyCheyenne Registered User Join Date: Mar 2017 Location: Chisago City Posts: 18	Rams Horn Exhaust Manifolds Hey guys, I recently put together a vortec sbc. After doing this I decided to change from my old headers with holes in them to rams horn exhaust manifolds(the corvette style ones). After putting the manifolds on I brought the truck to an exhaust shop and they said they were unable to put exhaust on the truck. This was due to there being no clearance on the passenger side for a pipe they said. Could this be right? Looking in there it looks like there's plenty of room. I know there are guys on here that are running rams horns on their trucks so I'm just curious how to route the exhaust. Thanks

06-28-2017, 11:44 PM	#2
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,158	Re: Rams Horn Exhaust Manifolds If it is the ones that has a dump that is straight down, I had the same issue. No shop could make the bend with what they had. I ordered correct ones from LMC and they were solid. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time

06-28-2017, 11:53 PM	#3
El Dorado Jim Registered User Join Date: Dec 2009 Location: El Dorado Ca Posts: 3,374	Re: Rams Horn Exhaust Manifolds I run the center dump ram horns on my 72,with a 350, it is 4 wheel drive, that may make a difference?

06-29-2017, 08:04 AM	#5
B Myers Registered User Join Date: Feb 2016 Location: Murphysboro Illinois Posts: 119	Re: Rams Horn Exhaust Manifolds I installed the straight down dump 2 1/2" collector corvette manifolds on my '71 350 C-10 last year. I made the pipe myself piece by piece and routed around the frame and starter getting down to the normal type of setup but it is tight, however I have good flowing exhaust out of cast rams horn manifolds that look stock.

06-29-2017, 10:22 AM	#7
eric67c10 Registered User Join Date: Jul 2008 Location: oakland Posts: 21	Re: Rams Horn Exhaust Manifolds I have corvette style ram horns with straight down with 350 on 67, I am running the heat riser, not a problem.

06-29-2017, 12:10 PM	#8
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Rams Horn Exhaust Manifolds Straight dumps are a very tough fit on 2wd as he engine frame mount and starter interfere. They fit easily on a 4wd. 2wd angle dumps which are stock do not come in 2.5, just 2.25 or whatever they are. So to make it easy use the 2wd angle dumps and start the down pipes in 2.25 hen increase size to 2.5 as soon as practical, every truck with 2.5 exhaust has it done this way with stock manifolds. I recently parted a 2wd that had straight dumps and 2.25 inch pipes, they trimmed the engine frame stands to get that to fit.



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