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#1 |
Registered User
Join Date: Dec 1999
Location: the Netherlands
Posts: 363
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2.5" rams horn exhaust manifolds
Does anybody know if there are new 2.5" rams horn exhaust manifolds for sale for our trucks?
I know the 2" are.
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06 BMW 330d aut touring full option 83 Jeep CJ7 360 aut sold 71 GMC Suburban 67 Chevrolet C10 stepside 54 Ford F100 sold 49 Chevrolet coe 48 Ford f6 coe Strijen the Netherlands "NO MISTAKES NO PROGRESS" |
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#2 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: 2.5" rams horn exhaust manifolds
Sure, you can get 2.5 ramshorns from a lot of places. The reason you're having a hard time finding them is that they are called Vette manifolds. Trucks had 2 inch, Vettes 2.5 inch.
Last I saw, Summit has them under the Dorman brand.
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#3 |
Registered User
Join Date: Dec 1999
Location: the Netherlands
Posts: 363
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Re: 2.5" rams horn exhaust manifolds
Thanx TX Firefighter, but will they fit, because they go straight down instead of angle a bit?
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06 BMW 330d aut touring full option 83 Jeep CJ7 360 aut sold 71 GMC Suburban 67 Chevrolet C10 stepside 54 Ford F100 sold 49 Chevrolet coe 48 Ford f6 coe Strijen the Netherlands "NO MISTAKES NO PROGRESS" |
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#4 |
Senior Member
![]() Join Date: Nov 2003
Location: NEAR MARYSVILLE,KANSAS 66508
Posts: 469
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Re: 2.5" rams horn exhaust manifolds
I don't know about fit;
but Speedway Motors carries them also.
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1972 C30 Cheyenne Super 1971 C10 (Parts truck) |
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#5 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,235
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Re: 2.5" rams horn exhaust manifolds
I hear the straight down horns in a 2 wheel drive setup it's a real tight turn with the headpipes clearing the crossmember and oil filter, starter. In a 4 wd setup it may work.
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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 |
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#6 |
Registered User
![]() Join Date: Aug 2009
Location: Westminster, CO
Posts: 78
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Re: 2.5" rams horn exhaust manifolds
I've got em in my 4x4 and the right side works fine on a 4x2, but the left is where you have a really tight fit... oh and I got mine on Ebay but had to grind a lot of slag and the old style alt bracket off as well.
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#7 |
Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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Re: 2.5" rams horn exhaust manifolds
2x4's you have to have a good exhaust man or pipe fabricator to make it work unless the engine is slid back. Anything is possible....Im about to do it.
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2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! It's not just a hobby..It's a LIFESTYLE!!! Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere! |
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#8 |
Registered User
![]() Join Date: Aug 2009
Location: Westminster, CO
Posts: 78
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Re: 2.5" rams horn exhaust manifolds
That's a good thought - 6 cyl frame mounts will move the engine back to the same spot as a 4x4 the crossmember might still be close but much better -
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#9 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: 2.5" rams horn exhaust manifolds
I can confirm both.
The straight dump manifolds are a challenge for the exhaust shop on V8 engine mounts. It can be done, just takes more finesse. And, the inline 6 engine mounts mounts move it far enough back to make the pipes very easy. You just have to decide what route is best for you in light of having to shorten the driveshaft and monkey with the shift linkage when moving the engine back.
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#10 |
Born Psycho
![]() Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,881
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Re: 2.5" rams horn exhaust manifolds
i've got 26 years in the same muffler shop and the straight dump 2 1/2 manifolds are a pain in the a$$ on a 2wd with the motor in the stock location. it CAN be done but it's not fun. unless the shop has a modern bender the bends won't be pretty either. i believe the vette manifolds are still available from GM, that's where i bought mine a few years back. i did have to cut off the old style generator/alternator brackets. they are the next best option to headers-without the leaks,lol.
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#11 |
Registered User
Join Date: Dec 1999
Location: the Netherlands
Posts: 363
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Re: 2.5" rams horn exhaust manifolds
OK guys thanks for the advice. My engine is slid back a little and I know a good exhaustshop so I'm going to try it.
For what I read they are less noisyer and not leaking again and again like my headers. ronald
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06 BMW 330d aut touring full option 83 Jeep CJ7 360 aut sold 71 GMC Suburban 67 Chevrolet C10 stepside 54 Ford F100 sold 49 Chevrolet coe 48 Ford f6 coe Strijen the Netherlands "NO MISTAKES NO PROGRESS" |
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#12 |
Registered User
Join Date: May 2010
Location: Vader, Wa
Posts: 36
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Re: 2.5" rams horn exhaust manifolds
Here is some on Jegs, I will be ordering these shortly for my 70 4x4 'burb. They are the 2.5 incher's.....http://www.jegs.com/i/Wysco/938/MA03...0002/-1:metal:
Looking for some more 67-72 members on Facebook! http://www.facebook.com/pages/1967-1...12378278777413 |
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#13 |
Registered User
Join Date: May 2001
Location: Benbrook, TX
Posts: 1,060
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Re: 2.5" rams horn exhaust manifolds
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69 swb stepside, rebuild and upgrade in progress |
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#14 | |
Registered User
Join Date: Dec 1999
Location: the Netherlands
Posts: 363
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Re: 2.5" rams horn exhaust manifolds
Quote:
Don't know if that make's that much of a difference??
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06 BMW 330d aut touring full option 83 Jeep CJ7 360 aut sold 71 GMC Suburban 67 Chevrolet C10 stepside 54 Ford F100 sold 49 Chevrolet coe 48 Ford f6 coe Strijen the Netherlands "NO MISTAKES NO PROGRESS" |
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#15 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: 2.5" rams horn exhaust manifolds
They clean really pretty too...
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#16 |
Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 2.5" rams horn exhaust manifolds
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#17 |
Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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Re: 2.5" rams horn exhaust manifolds
I mounted the 2.5's on the truck with my V8 in the stock possition and honestly I didnt see where there should be any trouble running the pipe at all!!! . I dont have a pipe bender but with some stock bends I could have cut out and fabed up the bends and welded them together. I loaded the truck on the trailer and took it to my muffler shop who was doing the run for me and told him that all the talk was that it was "tough" to make the bends. He looked under the hood, shrugged his shoulders and said leave it with me. I ended up with a great job and an extra set of 2.5 straight dump pre bent starter pipes and flanges for the next time I need to use 2.5 vette manifolds. He said he had to make one extra cut and weld to put it all together.
So......yes...2.5 vette manifolds work with the V8 in the stock possition...MYTH BUSTED!
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2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! It's not just a hobby..It's a LIFESTYLE!!! Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere! Last edited by 72freak; 02-19-2011 at 09:55 PM. |
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#18 |
Registered User
Join Date: Feb 2008
Location: Arizona
Posts: 638
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Re: 2.5" rams horn exhaust manifolds
looks good to me - nice job!
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72 Cheyenne shorty "CheyLow" 72 3/4 long 4X4 69 SWB "Prospector" 68 C/10 shorty - "Picacho" http://67-72chevytrucks.com/vboard/s...d.php?t=428379 sold to "93redsled" ![]() ![]() |
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#19 |
Not too old to learn
Join Date: Mar 2004
Location: SoCal
Posts: 617
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Re: 2.5" rams horn exhaust manifolds
Yes it can be done. The muffler guy with the right attitude, and skill
can and will do it.
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1968 C10 a way to long restoration. |
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#20 |
Registered User
![]() Join Date: Aug 2009
Location: Westminster, CO
Posts: 78
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Re: 2.5" rams horn exhaust manifolds
Those Jegs exhaust manifolds look great, I would guess I put at least 2 hours of clean up into the China made ones I bought on Ebay and they look almost that good.
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#21 |
Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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Re: 2.5" rams horn exhaust manifolds
I just ordered a set of 2.5's and my engine is in the stock V8 possition. I should have it to the muffler shop next week. I will post pictures if he can do it.
__________________
2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! It's not just a hobby..It's a LIFESTYLE!!! Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere! |
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#22 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: 2.5" rams horn exhaust manifolds
Another option instead of the Ram Horns is C4 (84-96) Corvette manifolds. There are 2 styles, one for the Cross-Fire and Tuned-Port engines and another for the LT1s. The Early one is like a mini header. The LT1 one is cast iron. Both have true 2 1/2" outlets and both are overall dimensionally similar to a ram-horn manifold. If you buy the LT1 ones, insist on removing the heat shield before you buy. Some have a bad habit of cracking.
By the way, on a Corvette the last application of the 2 1/2" ram-horn was in '63. All the way '64-82 the outlet on a small-block was 2". Some of the hi-po small blocks had 2 1/2" exhaust, but they were 2" off the manifold and became 2 1/2" where they turned back. It is tight on a SB '63-82 Corvette on the right side idler arm using 2 1/2" in this area.
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#23 |
Registered User
Join Date: Oct 2008
Location: Sparta, MI
Posts: 446
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Re: 2.5" rams horn exhaust manifolds
i have a set of the vette manifolds, i just replaced them with headers, do they really flow better than most headers? i like the sound of the headers more.
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1972 longbed- 454 1967 shortbed- 355 |
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#24 | |
Not too old to learn
Join Date: Mar 2004
Location: SoCal
Posts: 617
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Re: 2.5" rams horn exhaust manifolds
Quote:
Of course after I went out and located a beautiful set of Ram Horns with the alternator mount lugs on passenger side, and had a shop bend up a set of pipes back to under the cab ready for mufflers. Then like a real dummy just now looked at the specs for the engine. Been reading a lot of exhausting lol detail about problems installing 2 1/2 pipes, and you come up with Vette 2" manifolds into 2 1/2"head pipe. I wonder if the engine will be that much affected by the smaller exhaust size ? If for performance , racing and breaking things loss every one in awhile ya, but for every cruising ![]()
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#25 |
Registered User
Join Date: Mar 2009
Location: Lebanon, Ohio
Posts: 324
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Re: 2.5" rams horn exhaust manifolds
I have the 2 1/2" vette style installed on my truck. It is very tight to the starter but possible. My exhaust is 2 1/2" polished tube tucked up into the frame.
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