ram horn pics - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Boog** · 01-09-2005, 01:13 PM

Can anyone direct me to pics of different types of ram horn manifolds and their applications? I've seen a couple of pics in different places but without complete applications. I know some have generator mounts cast into them and I think some don't. Some have straight down dumps and some angled. Do the angled ones work for 67 to 72 trucks?
I read in a post below some are being reproduced but outside the US.
I'd like to know what years to look for when I go to the salvage yards.
I have an 88 350 in my 69 with T350, headers on it right now but they will be coming off in favor of ram horns.
I think Eastwood sells a manifold paint that looks good. Anyone used this and how well does it last? thanks.

Robert1970C20rstbukt · 01-09-2005, 02:22 PM

Rear dump manfolds were used on 2wd trucks, and straight dumps were used on 4X4's. I have a whole damn collection of them out in the shed. The rarest ones I've seen are the rear dumps with the altnernator mount cast in 'em, I just picked one up at the junkyard for $25 in awesome shape two days ago.

**Boog** · 01-09-2005, 02:49 PM

Hi Robert. Thanks for replying.
So the angled dump is correct for the 2 WD trucks. Do some not have the generator/ alternator mount cast in them? Can that mount be ground off? I am using a later engine with alternator mount on the right side.
How are the corvette horns configured? straight dump?
What are the chances of replacing the old studs without breaking them off in the manifold or extracting them when they are already broken off? slim?
When did they start with the a i r smog manifolds? thanks. Boog

67cst · 01-09-2005, 04:14 PM

i replaced the studs on the angle dump ramhorns on the 67, it wasnt hard at all, none were broken off though, its a good idea to do them when they arent in the truck cause it would be a ***** to do them down the road. id take the time and it them now then you know your set and everything will go together nice-all your nuts will spin on and no hassles

Robert1970C20rstbukt · 01-09-2005, 04:38 PM

I don't know anything about the corvette rams, but I think they started using AIR Injection in '69, not all of the ram horns have these holes in 'em. If yours have the alternator mount cast in to them I wouldn't grind it off, it would be worth something to someone looking for one. I'll get a bunch of the manifolds I have and take some pics of 'em for you and post 'em. As for the stud replacing it all depends on how rusty they are. If they're rusted in the holes it's a pain in the a$$ to replace.

86SILVERADO · 01-09-2005, 04:46 PM

Straight or angled should be fine in your truck. I only know my 67 has straight downs to clear the clutch linkage and it is a 2wd.

Robert1970C20rstbukt · 01-09-2005, 04:51 PM

Here's one of the angle dump driver's side ramhorn with the alternator mount. I pulled it off of an all original '68 C10 2wd with either a 283 or 327SB and a 4 speed.

**N2TRUX** · 01-09-2005, 05:26 PM

Just for reference here is a pic of a pair of Corvette 2 1/2" ram horns. They are the largest and best flowing of all the ram horn manifolds. These have had the bracket cut off....

**Boog** · 01-09-2005, 07:33 PM

Those look really good Ken. I don't think I will be persueing the vette manifolds, probably too high for me, but I've got a line on a couple of sets of truck horns. I will cut off that mount and smooth them up though. I hope I can make them look as good as so many I've seen. Nice painted up engine with crusty manifolds looks awful. Thank you guys.

HeavyD · 01-09-2005, 07:38 PM

N2TRUX will those vette manifolds work on a 2wd truck? No problems fabricating the exhaust? I would like a set but was concerned when all the truck rams I saw were all angled...figured must be for clearance??

**N2TRUX** · 01-10-2005, 09:31 AM

Quote:

Originally Posted by HeavyD

N2TRUX will those vette manifolds work on a 2wd truck? No problems fabricating the exhaust? I would like a set but was concerned when all the truck rams I saw were all angled...figured must be for clearance??

Yes, they will fit. I have seen a couple sets mounted and they work just fine. You might have to clearence the frame a little around the flange, but that's about it....

Robert1970C20rstbukt · 01-09-2005, 07:50 PM

Here's some more pics just for the hell of it.

1st one is a driver side straight dump with alt. mount, prob from a car
2nd one is a passenger side straight dump from a '68 C/50
3rd one is a driver side rear dump, from a truck
4th one is a drver side straight dump with the old style generator mount, prob from a car

later

Zeke · 01-09-2005, 08:34 PM

You can still get the 2 1/2 inch manifolds from GM, part number 3797901, $108 ea. Shipping is kinda high $50 each, but was still cheaper than buying from local Chevy dealer $174.00 plus tax.

http://www.gmpartsdirect.com/

It is the left hand with the generator mount, get two and grind off the gen mount, they will fit both sides. You can get a right side with the heat hole for the choke but it is more expensive. The dump is straight down but doesn't extend as far as stock truck manifolds. I have two but have not installed as I am uncertain how I want to run my exhaust.

4x4Poet · 01-10-2005, 05:43 AM

I have used the black Eastwood manifold paint on heads and manifolds. It works as a rust preventative and high-heat capable paint that won't burn off even near the exhaust ports, but it does not insulate the manifolds from heat and lower engine compartment temps the way ceramic-metallic coatings (HPC, Jet-Hot) do. And it is difficult to coat the inside of manifold with Eastwood manifold paint (I didn't bother). Check around some of the larger cities in Arkansas for locals who do ceramic-metallic coating inside and out of manifolds. Should be much cheaper than HPC, Jet-Hot, etc with no shipping charges.

72gord · 01-10-2005, 10:06 AM

Boog, I have removed old studs by heating the ear where the stud screws into the manifold with success, just be careful not to get the stud too hot or it will twist off. I try to direct the heat up away from the stud, trying to just heat the manifold, yes, the heat will be absorbed by the stud also, but get the manifold heated and try to turn the stud out before it(the stud) gets cherry red. Never had much luck getting them out once they twist off, have got a couple but odds are better before they break off. Good Luck, Gord

4x4Poet · 01-11-2005, 05:36 AM

Removing Rams Horn manifold studs was addressed in this recent thread.

This board does have a search function.

4x4Poet · 01-13-2005, 05:12 PM

YaaaaaaaaaaaaaaHooooooooooooooo! Look at all the pretty Rams Horn pics at this Yahoo store. [Thanks Pirate4x4 J-bone

].

Do you Yahoo?

*wolfthing2000* · 01-13-2005, 05:45 PM

will these work on a 4x4 truck? My headers are toast.
Dave

*wolfthing2000* · 01-14-2005, 10:04 AM

ttt will the center dumps work for a 4x4 application ? 69 K20

01-09-2005, 01:13 PM	#1
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,452	ram horn pics Can anyone direct me to pics of different types of ram horn manifolds and their applications? I've seen a couple of pics in different places but without complete applications. I know some have generator mounts cast into them and I think some don't. Some have straight down dumps and some angled. Do the angled ones work for 67 to 72 trucks? I read in a post below some are being reproduced but outside the US. I'd like to know what years to look for when I go to the salvage yards. I have an 88 350 in my 69 with T350, headers on it right now but they will be coming off in favor of ram horns. I think Eastwood sells a manifold paint that looks good. Anyone used this and how well does it last? thanks. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

01-09-2005, 02:22 PM	#2
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Rear dump manfolds were used on 2wd trucks, and straight dumps were used on 4X4's. I have a whole damn collection of them out in the shed. The rarest ones I've seen are the rear dumps with the altnernator mount cast in 'em, I just picked one up at the junkyard for $25 in awesome shape two days ago. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

01-09-2005, 02:49 PM	#3
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,452	Hi Robert. Thanks for replying. So the angled dump is correct for the 2 WD trucks. Do some not have the generator/ alternator mount cast in them? Can that mount be ground off? I am using a later engine with alternator mount on the right side. How are the corvette horns configured? straight dump? What are the chances of replacing the old studs without breaking them off in the manifold or extracting them when they are already broken off? slim? When did they start with the a i r smog manifolds? thanks. Boog __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

01-09-2005, 04:14 PM	#4
67cst i love summertime Join Date: Jul 2002 Location: Kelowna BC Posts: 4,303	i replaced the studs on the angle dump ramhorns on the 67, it wasnt hard at all, none were broken off though, its a good idea to do them when they arent in the truck cause it would be a ***** to do them down the road. id take the time and it them now then you know your set and everything will go together nice-all your nuts will spin on and no hassles __________________ 1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724

01-09-2005, 04:38 PM	#5
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	I don't know anything about the corvette rams, but I think they started using AIR Injection in '69, not all of the ram horns have these holes in 'em. If yours have the alternator mount cast in to them I wouldn't grind it off, it would be worth something to someone looking for one. I'll get a bunch of the manifolds I have and take some pics of 'em for you and post 'em. As for the stud replacing it all depends on how rusty they are. If they're rusted in the holes it's a pain in the a$$ to replace. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

01-09-2005, 04:46 PM	#6
86SILVERADO Registered User Join Date: Dec 2002 Location: Hills of Western Mass Posts: 626	Straight or angled should be fine in your truck. I only know my 67 has straight downs to clear the clutch linkage and it is a 2wd. __________________ 86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! Last edited by 86SILVERADO; 01-09-2005 at 04:48 PM.

01-09-2005, 04:51 PM	#7
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Pics! Here's one of the angle dump driver's side ramhorn with the alternator mount. I pulled it off of an all original '68 C10 2wd with either a 283 or 327SB and a 4 speed. Attached Images __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck Last edited by Robert1970C20rstbukt; 01-09-2005 at 05:05 PM.

01-09-2005, 05:26 PM	#8
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,023	Just for reference here is a pic of a pair of Corvette 2 1/2" ram horns. They are the largest and best flowing of all the ram horn manifolds. These have had the bracket cut off.... Attached Images

01-09-2005, 07:33 PM	#9
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,452	Those look really good Ken. I don't think I will be persueing the vette manifolds, probably too high for me, but I've got a line on a couple of sets of truck horns. I will cut off that mount and smooth them up though. I hope I can make them look as good as so many I've seen. Nice painted up engine with crusty manifolds looks awful. Thank you guys. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

01-09-2005, 07:38 PM	#10
HeavyD Senior Member Join Date: Sep 2004 Location: Wakaw, Sask, Canada Posts: 3,180	N2TRUX will those vette manifolds work on a 2wd truck? No problems fabricating the exhaust? I would like a set but was concerned when all the truck rams I saw were all angled...figured must be for clearance?? __________________ "You can take the man out of PA, but you can't take PA out of the man"

01-09-2005, 07:50 PM	#12
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	More pics Here's some more pics just for the hell of it. 1st one is a driver side straight dump with alt. mount, prob from a car 2nd one is a passenger side straight dump from a '68 C/50 3rd one is a driver side rear dump, from a truck 4th one is a drver side straight dump with the old style generator mount, prob from a car later Attached Images __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

01-09-2005, 08:34 PM	#13
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	You can still get the 2 1/2 inch manifolds from GM, part number 3797901, $108 ea. Shipping is kinda high $50 each, but was still cheaper than buying from local Chevy dealer $174.00 plus tax. http://www.gmpartsdirect.com/ It is the left hand with the generator mount, get two and grind off the gen mount, they will fit both sides. You can get a right side with the heat hole for the choke but it is more expensive. The dump is straight down but doesn't extend as far as stock truck manifolds. I have two but have not installed as I am uncertain how I want to run my exhaust. __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

01-10-2005, 05:43 AM	#14
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	I have used the black Eastwood manifold paint on heads and manifolds. It works as a rust preventative and high-heat capable paint that won't burn off even near the exhaust ports, but it does not insulate the manifolds from heat and lower engine compartment temps the way ceramic-metallic coatings (HPC, Jet-Hot) do. And it is difficult to coat the inside of manifold with Eastwood manifold paint (I didn't bother). Check around some of the larger cities in Arkansas for locals who do ceramic-metallic coating inside and out of manifolds. Should be much cheaper than HPC, Jet-Hot, etc with no shipping charges. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

01-10-2005, 10:06 AM	#15
72gord Never enough time!! Join Date: Mar 2004 Location: sw Wisconsin Posts: 602	Boog, I have removed old studs by heating the ear where the stud screws into the manifold with success, just be careful not to get the stud too hot or it will twist off. I try to direct the heat up away from the stud, trying to just heat the manifold, yes, the heat will be absorbed by the stud also, but get the manifold heated and try to turn the stud out before it(the stud) gets cherry red. Never had much luck getting them out once they twist off, have got a couple but odds are better before they break off. Good Luck, Gord

01-11-2005, 05:36 AM	#16
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Removing Rams Horn manifold studs was addressed in this recent thread. This board does have a search function. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.



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01-13-2005, 05:12 PM	#17
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	YaaaaaaaaaaaaaaHooooooooooooooo! Look at all the pretty Rams Horn pics at this Yahoo store. [Thanks Pirate4x4 J-bone]. Do you Yahoo? __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

01-13-2005, 05:45 PM	#18
wolfthing2000 Account Suspended Join Date: Oct 2004 Posts: 1,276	will these work on a 4x4 truck? My headers are toast. Dave

01-14-2005, 10:04 AM	#19
wolfthing2000 Account Suspended Join Date: Oct 2004 Posts: 1,276	ttt will the center dumps work for a 4x4 application ? 69 K20

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