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#UP232839
SMOOTHIE RAMS HORNS RAW
- Blemished
- Item has cosmetic imperfections such as scuffs, dents, bends, or similar marks. The item functions as originally intended but is discounted due to these blemishes. Please review the photos and description for more information
- Classic rams horn style exhaust manifold with a ground smooth appearance for great vintage looks
$151.99
/pair
In Stock
$184.99
Save $33.00
Order soon, only 1 left in stock!
Item has cosmetic imperfections such as scuffs, dents, bends, or similar marks. The item functions as originally intended but is discounted due to these blemishes. Please review the photos and description for more information.
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Product Summary
Nodular Iron, Natural, Natural, Gasket(s) Included
- Blemished
- Item has cosmetic imperfections such as scuffs, dents, bends, or similar marks. The item functions as originally intended but is discounted due to these blemishes. Please review the photos and description for more information
- Classic rams horn style exhaust manifold with a ground smooth appearance for great vintage looks
- Features Corvette style 2-1/2-inch outlet for added flow and performance
- Fits most Gen 1 small block Chevy heads with straight or angle plug design
- Cast iron efficiency with the fitment of block-hugger style tube headers
- Includes collector gaskets and mounting hardware for an easy installation
Key Specs
| MFG. Part # | UP232839 |
| Brand | Speedway Motors |
| Garage Sale Type | Blemished |
| Finish | Natural |
| Collector Diameter | 2-1/2 Inch |
Need To Know
Need help?
855.313.9176Ineligible for Return
Contains items that cannot be returned
Speedway Motors UP232839 Details
Speedway Motors UP232839 Details

This is Garage Sale priced due to cosmetic imperfections. The item functions as originally intended but is discounted due to the blemishes. The photos above will show the imperfections.
NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS
- Smooth exterior finish with no exposed brackets or bolt holes for a clean appearance
- Fits most factory Gen 1 SBC heads including Vortec heads
- Ample clearance for both straight and angled spark plug applications
- 1-3/8-inch by 1-3/8-inch square port design can be port matched to your heads
- Increased flow over stock manifolds and utilizes Corvette-style 2-1/2-inch 3-bolt collector
- Nodular iron construction retains heat for efficiency and quieter than tubular headers
- Design tucks collector close to block like a “block hugger” header
- Includes fasteners, exhaust flange gaskets, and collector gaskets for installation
- Raw surface finish can be painted or ceramic coated
Low Profile Exhaust Manifolds That Provide Great Clearance with A Classic Appearance
If you’ve spent any time at all installing tubular steel headers on a car you know what a pain in the backside they are. They often hang too low, hit your steering box, or must pass through your steering or clutch linkage, and don’t even get us started on blown out header gaskets and must constantly check and tighten header bolts. Are tubular headers worth the hassle? Many will say yes, and we will agree if the power level warrants it, or it is a custom set made for the exact chassis and engine combination (which often costs big money!). For most of us however, a good “block hugger” header will suffice. These header designs are known for being easier to install and have few drawbacks (except those often leaking header gaskets).
But even the block hugger header can look out of place in some builds, especially those early pre-war cars with open engine bays. You can give your small block Chevy the best of both worlds by using our smooth looking cast iron rams horn exhaust manifolds. These ram horn manifolds provide the same “block hugging” design while offering a period exhaust manifold look that fits right in. Not to mention the cast iron design has many benefits over the tubular steel header. Add in our high flow design with large 2-1/2-inch Corvette-style exhaust collector and it is easy to see how our Smoothie Rams Horn exhaust manifolds are hard to beat for the price, clearance, and great fit.
Fits Most Straight and Angle Plug Gen 1 Small Block Chevy Cylinder Heads
The factory cast iron SBC exhaust manifold will often have extra mounting holes/ears cast into it, either causing fitment issues or just plain ugly looking. Stock manifolds also are cast for specific chassis and engine combinations, again potentially causing fitment issues. Our Smoothie Rams Horn exhaust manifolds are designed from the start to fit most factory head castings, be they straight plug or angled plug, while providing greater flow and power production than the typical stock SBC exhaust manifold. With plenty of material around the 1-3/8-inch square exhaust flange port you can easily port match these to your heads for greater exhaust flow. The larger 2-1/2-inch Corvette style 3-bolt collector works with both flat gaskets and a 2-1/2-inch Corvette exhaust donut if you’re stock exhaust pipe flange requires them.
You can easily connect our rams horn manifolds to your existing exhaust via 2-1/2-inch 3-bolt flanges, or 2-1/2-inch to 2-inch 3-bolt reducers, depending on the diameter of your current exhaust system. This complete kit includes a pair of ramhorn manifolds, mounting hardware for the manifold and collector, exhaust flange gaskets, and collector gaskets. Everything you need to easily install your ram horn manifolds without the stress and frustration of trying to fit tubular headers. Plus, there’s no denying the ramhorn manifolds look so right on SBC powered hot rods and classic trucks. Choose from the raw finished manifolds offered here, or we also offer our rams horn manifolds in silver ceramic coat, black high-temp painted, and chrome plated versions as well.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Speedway Motors UP232839 Specifications
Speedway Motors UP232839 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | UP232839 |
| Brand | Speedway Motors |
| Garage Sale Type | Blemished |
| Finish | Natural |
| Collector Diameter | 2-1/2 Inch |
| GENERAL | |
| Material Type | Nodular Iron |
| Color | Natural |
| Flange Style | Square Port |
| Gasket(s) Included | Yes |
| Inlet Size | 1-3/8-inch square port |
| Hardware Included | Yes |
| Sold in Quantity | Pair |
| Notes | Fitment issues with Tri-5 Chevy’s and 1935-1940 Fords with stock steering box |
| Header Dimension B | 5.30" |
| Header Dimension C | 18.50" |
| Header Dimension A | 4.03" |
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Ratings & Reviews
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