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#1 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Fitting 2.5 exhaust to stock ram's horn
I'm going to use my original 45* angled ramhorns and wanted to see what adaptors you'all are using.
Any ideas and / or links appreciated. Thanks, s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#2 |
E.H.F.D Engine #2
Join Date: Feb 2003
Location: East Hampton, NY Long Island
Posts: 916
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Re: Fitting 2.5 exhaust to stock ram's horn
Im using Stock ram horns (straight dump 4x4) and would like to see this as well. I'm going to run 2.5" also
TTT
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-NICK '72 K10 SWB Fleetside. Avocado Highlander 350-4speed-NP205 Frame Off Re-Creation '89 GMC V3500 C/C Flatbed Plow Truck 454/SM465/Np205 '15 Chevy 2500HD CCSB High Country Duramax '22 Tahoe Premier Duramax |
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#3 |
Registered User
Join Date: Jan 2009
Location: Brookfield,WI
Posts: 50
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Re: Fitting 2.5 exhaust to stock ram's horn
I'd like to know also. I'm using my original 4x4 straight dumps, and hope to go with 2.5'', but on a Jimmy.
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'66 ![]() '72 ![]() |
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#4 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Fitting 2.5 exhaust to stock ram's horn
IIRC the straight down rams horns are already 2.5 in?
I found this and think is might solve both our dilemmas. http://www.castheads.com/corvette_systems.php http://www.castheads.com/log_systems.php#manifolds
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() Last edited by Sport/Truck; 04-17-2011 at 06:42 PM. |
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#5 |
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Fitting 2.5 exhaust to stock ram's horn
I know on a buddies truck they went from 2" tube to 3" tube with...... Weld! They must have used half a roll of wire.
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#6 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Fitting 2.5 exhaust to stock ram's horn
Quote:
![]() I'm looking to have a clean transition and hope this will work for me.
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#7 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,966
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Re: Fitting 2.5 exhaust to stock ram's horn
Speedway Motors has a decent head pipe set-up w/a 2.5" flange....
http://www.speedwaymotors.com/Tight-...-Kit,1722.html
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#8 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: Fitting 2.5 exhaust to stock ram's horn
Curious if anyone ended up buying the adapter kits above.
Also, do you use special hardware for attaching the ram horns to the heads or just plain bolts, Grade 8?
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#9 |
Senior Member
![]() Join Date: Feb 2012
Location: chillicothe, illinois
Posts: 688
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Re: Fitting 2.5 exhaust to stock ram's horn
who's doing your exhaust (home build or muffler shop)? I have been working at a Meineke for 24 years, just a guess but I have probably custom bent exhaust for 100 plus 67-72 chevy trucks. All I do is use a 2" reducer after I bend the front pipes,flare it for the donut and press in a piece of 2" to make the donut sleeve. very simple process.
Wes |
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Tags |
manifold, manifold adaptors, ram's horns, ramhorns |
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