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01-18-2008, 10:06 AM
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#1 |
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Registered User
Join Date: Nov 2007
Location: Greeneville, TN
Posts: 65
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Ram Horn Manifolds
Just wanting to double check a part number if anyone could help. I am wanting to run ram horns on my truck and am looking for the 2.5in outlets. I belive i found the correct part numbers but not real sure could anyone double check and help me out. thanks in advance.
3797901 3797902
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my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=265847 |
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01-18-2008, 11:54 AM
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#2 |
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Registered User
Join Date: Nov 2003
Location: Alexandria, VA
Posts: 1,534
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Re: Ram Horn Manifolds
Did a little google search and found that Year One lists those part #'s for 1962 & 63 Corvette and full size chevrolet with 327ci and they do have 2 1/2" outlets. They both have a bracket cast in for accessory mounting, which could be cut off. I have considered using them myself, but have heard that since they dump straight down, they will interfere with the motor mount towers. Maybe someone who's used them can verify this.
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'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.   
Last edited by Sweet72; 01-18-2008 at 11:55 AM. |
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01-18-2008, 08:30 PM
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#3 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Re: Ram Horn Manifolds
I used 2 3797901s on my truck. The manifolds are the same left to right except for the generator mounts which you will not use anyway. I cut them off and ground them smooth. Dorman sells these manifolds new now, so you should be able to buy new ones at any good parts store with a little digging.
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Tim |
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01-19-2008, 12:32 AM
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#4 |
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Registered User
 Join Date: Jan 2007
Location: Fairview, ks
Posts: 203
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Re: Ram Horn Manifolds
I think the ones sold by Dorman are 2" outlet
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01-19-2008, 07:07 AM
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#5 | |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Re: Ram Horn Manifolds
Quote:
That is possible. I am not 100% sure. Also, my Blazer is 4WD so the straight down dump manifolds fit like factory.
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Tim |
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01-19-2008, 07:25 AM
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#6 |
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Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,745
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Re: Ram Horn Manifolds
IIRC the drivers side MM bracket needs a little triming to clear.
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 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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01-19-2008, 10:36 AM
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#7 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,211
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Re: Ram Horn Manifolds
New 2 1/2" outlet Corvetter ramhorns can be found online for $75 a piece, or 150 for 2 with hardware. I can't remember the website though.
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