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07-05-2010, 11:59 PM | #1 |
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Rams horn exhaust manifolds
What is so special about Ram's horn manifolds? Are they a stock part?
Do they breathe better thana a regular exh manifold?
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71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now. |
07-06-2010, 12:24 AM | #2 |
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Re: Rams horn exhaust manifolds
they breathe pretty good, better than other chevy stock manifolds.
I added headers and "gave" away my stock ram horn manifolds to a family member. big mistake! Those ram horn manifolds flowed well, gave a good sound with the right mufflers,etc. these headers get hot as hell, leak, and have been nothing but problems since i put em on. Never again will i go with headers. Now i've got a reason to buy "new" rams horn manifolds. LOL The "gains" everyone said i'd get, never happened. Just not worth it for me.
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I love stock! Not really into the whole bagged, squished,chopped, drooped,cut, bent,lifted,twisted,split,decked,massaged,tubbed,jacked trend. (o.k. slightly lowered is fine) For the love of god, just drive it before you forget what the truck is supposed to look like !....LOL Last edited by beebster; 07-06-2010 at 12:26 AM. |
07-06-2010, 09:03 AM | #3 |
its all about the +6 inches
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Re: Rams horn exhaust manifolds
Ram horn manifolds are stock for our trucks, and the later style 'log' manifolds don't fit so well.
Also, ram horns are the best flowing stock manifold they used. The vette ones which are a little bigger than truck ones, actually outflow many of the low cost headers. |
07-06-2010, 09:15 AM | #4 |
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Re: Rams horn exhaust manifolds
Would the vette ones fit the same? If so, are they hard to get?
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71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now. |
07-06-2010, 12:19 PM | #5 |
Its a Truck Thing......
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Re: Rams horn exhaust manifolds
If you got a good pipe bender dude, you may get the vet ones to work, they dump straight down unlike the ones for the trucks which dump at an angle. I tried a set and they wouldnt work on my 71.
Smitty
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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 Last edited by 71meangreenc10; 07-06-2010 at 12:19 PM. |
07-06-2010, 07:06 PM | #6 | |
optomistic ah-so
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Re: Rams horn exhaust manifolds
Quote:
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Rubbing is Racin' Ribbing is Bench Racin' 1970 C-10 lwb Fleetside. Originally 350 2-bbl 3-on-the-tree, m/b, m/w, m/s no a/c. Currently running on a '76 Camaro 305. |
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11-22-2016, 07:01 AM | #7 | |
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Re: Rams horn exhaust manifolds
Quote:
but does this kill the use of an HEI in these trucks putting the SBC in that spot? |
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07-06-2010, 05:29 PM | #8 |
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Re: Rams horn exhaust manifolds
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07-06-2010, 08:48 PM | #9 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Rams horn exhaust manifolds
Wrapping headers or manifolds is not a good idea on anything less than a full race car (truck). The tape/wrap retains the heat and the mwtal becomes brittle, also it speeds up rust.
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07-06-2010, 12:08 PM | #10 |
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Re: Rams horn exhaust manifolds
I have to agree with beebster, when I did mine I was expecting great results and got little if any. What I did get was alot of head aches, leaking, melting plug wires, fitment issues and they get hot as heck. They look cool but IMO not worth it .
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07-06-2010, 02:30 PM | #11 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
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Re: Rams horn exhaust manifolds
People install headers and expect a huge gain. The fact of the matter is, even the best headers will do little to nothing at most 'driver' RPMs. Exhaust flow doesn't help much at lower (under 3000-ish) RPMs.
Headers will always be hot, you should expect that. They are thin tubes with fire in them. Manifolds are thick and retain heat. With that added header heat, one should expect burned plug wires unless you take action and secure them where they wont touch the pipes. (they'll burn on manifolds too for the record) Also, the lower cost headers are more prone to leaking. I've run $99 craptastic ones and they leaked like mad. A little grinding and quality gaskets, and you'll have leak free cheap headers. The higher cost ones are way less likely to leak with thicker flanges and higher quality craftsmanship. They are also less likely to get in the way of the plugs and everything else under the hood. Headers is one of the pieces where you get what you pay for. But for 99% of the trucks on the road, and for 99% of the people owning them, Ramhorn manifolds are the way to go. |
07-06-2010, 06:34 PM | #12 |
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Re: Rams horn exhaust manifolds
Just went from craptastic headers to the correct rams horns on my 68 and as has been said previously truck runs better, is quieter inside and everything fits as it should. Get the horns trash the headers- I cant believe I just said that, look out 40 here I come
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07-06-2010, 07:11 PM | #13 |
Droppin' It Like It's Hot!
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Re: Rams horn exhaust manifolds
This is very good information to read, I have the stock ram horns on my mildly built 350 but was going to install a set of headers I acquired form a friend. Guess I'll leave the ram horns alone if they are better than headers. I knew about issues with headers sealing but was willing to tolerate that if the performance was better... Thanks for the info!
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Robert
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07-06-2010, 07:15 PM | #14 |
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Re: Rams horn exhaust manifolds
Yep, bought my truck with headers. They don't leak, they don't get too hot and everything clears just fine. I can even change the spark plugs without taking them off so I just have some nicer ones.
BUT, I don't like them, and I will be putting rams on when the exhaust gets redone. |
10-06-2017, 03:26 AM | #15 | |
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Re: Rams horn exhaust manifolds
Quote:
I will get them the next time I replace stuff. |
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05-20-2018, 07:59 PM | #16 |
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Re: Rams horn exhaust manifolds
Great info. My right side ram horn has a crack, purchased a new set on Ebay. My left side has the 2 bolts holes for the alternator, the new one doesn't. Is there a bracket to use in place of the exhaust manifold bolt holes? Thanks
I didn't even notice those 2 bolts under the alternator supporting it, only once I had all 6 bolts removed and the ram horn wouldn't come out! |
05-20-2018, 09:07 PM | #17 |
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Re: Rams horn exhaust manifolds
Had Headman Headers on the TBI 350 in my Jeep CJ. Kept leaking at the ball collector. Reason I went with headers is due to the engine mounts, couldn't find cast iron exhaust manifolds to fit until I stumbled apon the 2wd truck ram horn manifolds. Haven't had to touch them since installed. Quieter under the hood, and no leaks.
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07-07-2010, 09:55 AM | #18 |
*** That's interesting ***
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Re: Rams horn exhaust manifolds
I'm having a 383 stroker built (for torque not for racing). I've done lots of reading on the subject of headers on these trucks and I also have experience with headers in other applications (and most of the time they have been annoying). I've seen dyno results comparing headers to each other and and to ram horns. And have been overloaded with it all. Back in April, I ordered a set of Doug Thorleys since they seem to be the best headers for these trucks from what I researched (ordered from DougThorley.com -- nice discount for board members). But for some reason they are having trouble getting them now and haven't shipped them yet (since April!!!!). I've debated canceling the order and using the stock ram horns. Anyone ever use the rams with a 383 stroker in a non-racing application (towing for example)? I don't want to shoot myself in the foot either way. If it were a stock 350, it's a no brainer (ram horns!). But what about a 383 built for torque?
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Tom Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
07-07-2010, 03:56 PM | #19 |
its all about the +6 inches
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Location: Hilliard Ohio
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Re: Rams horn exhaust manifolds
383 for pullin stumps, I'd recomend manifolds, unless you are working it at 3000+ RPMs
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07-07-2010, 04:34 PM | #20 | |
*** That's interesting ***
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Re: Rams horn exhaust manifolds
Quote:
On the flip side, nicely modified motors seem to like headers, esp as you said at higher RPMs and they sound better! What I have determined is that "good" headers are the way to go or not at all. Never buy cheap ones unless you want problems left and right. But I've read and heard many truck folks saying to keep the ram horns. I'm having the engine built and tuned for lower RPM, higher torque use. And I already have a good set of horns on the 350 that I am yanking out. I have always wondered about some "real life" opinions. I've read many of the other threads here on this subject, and still couldn't come to a conclusion. And this thread opened the door again.
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Tom Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
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07-07-2010, 04:54 PM | #21 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Rams horn exhaust manifolds
oddly enough, I have always had more problems with manifilds... and i will be ignoring my own advice and installing header on my longhorn with the new engine... but, in all reality, i would still recomend the manifolds.
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07-07-2010, 11:00 PM | #22 |
Who's got steelies?
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Re: Rams horn exhaust manifolds
Yeah, I love the ramhorn manifolds, but have had more problems with them than with any other style exhaust manifold or headers. But the cause usually ends up tracing back to stuff like bad engine mounts, exhaust system hangers, etc.
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07-07-2010, 11:28 PM | #23 |
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Re: Rams horn exhaust manifolds
I ditched my ram horns for some hooker headers & have had 0 yes ZERO problems with leaks or spark plug burning.
As Todd said, I too was having heating issues, cant truly pin it on the exhaust, but I made the change to headers & added a tranny cooler and my heating problems went BY BY. no more over heating when driving down the high way. I'm also running a modified 327 so the 4000 - 6200 rpm range is quite often a norm for me when I'm enjoying the truck on the weekends!!! |
07-07-2010, 05:25 PM | #24 |
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Re: Rams horn exhaust manifolds
Huhh ??
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07-07-2010, 06:40 PM | #25 |
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Re: Rams horn exhaust manifolds
the air ports on my manifolds were broke (had to jb weld in bolts) and new manifolds were more expensive than my summit ceramic coated headers. On my old truck one manifold split in half. Never had trouble with the summit/flowtech headers on either. You guys must be buying the wrong stuff
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