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These "rams horn" cast iron .

This is a Set of New Aftermarket Exhaust Manifolds for the 1967-1972 GM, Chevrolet V-8 Engines Item Description : Driver Side & Passenger Side, Chevrolet, GMC Pickup, Suburban, Blazer, 2WD Models Only Other Information : 2 Wheel Drive Models, Ram Horn Style Center Dump 45 Degree (Kick / Angle back), Fits the Chevrolet made Engines. 283, 305, 307, 327, 350Smoothie Rams Horn Exhaust Manifolds, Small Block Chevy, Silver (18) Material Type: Nodular Iron. Finish: Silver ceramic coated. Collector Diameter: 2-1/2 Inch. $243.89 /pair. $278.00. Add to Cart-10%. Hooker Headers | #42585273HKR. Hooker 8527-3HKR S/B Chevy Exhaust Manifolds, D-Port, Black. Material Type: Cast Iron. Finish:Get the best deals for chevrolet ram horn exhaust manifold at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Flowtech 11704-1FLT SB Chevy Rams Horn Exhaust Manifold, Silver. Material Type: Cast Iron. Finish: Ceramic Coated. Collector Diameter: 2-1/4 Inch. $452.95. /set.SBC Exhaust manifold 3797901 w/choke holes. Discussion in 'The Hokey Ass Message Board' started by Edger, Aug 25, 2013. Joined: Aug 22, 2009 Posts: 32. Profile Page. Edger. Member. from Ojai, Ca. I bought a set of SBC ram horn manifolds on ebay but the guy didn't show or talk about the choke holes in the top of the left side manifold. I have ...SBC "Rams Horn" Manifold Bolts- Size?? Jump to Latest Follow 8K views 4 replies 4 participants last post by acr Mar 31, 2005. A. acr Discussion starter 232 posts · Joined 2003 Add to quote; Only show this user #1 · Mar 31, 2005. Can someone tell me the bolt size, thread, & length of ...tmoore79. 4789 posts · Joined 2010. #7 · Feb 14, 2012. After fighting with Hookers, I sold them and bought some ramhorns for my Vortecs. The problem you will run into is they didn't center the spark plug holes on the Vortecs. They put the sparkplug closer to the exhaust port which doesn't give much boot clearance on #2 and #5 plugs.Random access memory, or RAM, is how your computer opens, reads and runs the software you use, from your operating system to PC games. RAM modules are often measured in megabytes (...This is what I used on 62 chevy style 283 ram's horn manifolds: Take the factory generator mount and get a piece of all thread rod, I forgot which size it is, but get the same size as the hole of the mount for the alternator. You might have to enlarge the holes in the bracket for this. Slide this through the bracket with the alternator in place ...DEMOTOR PERFORMANCE Ram Horn Exhaust Manifolds Raw For Chevy SBC 283 305 327 350 400. $148.88 $ 148. 88. FREE delivery Wed, Jun 5 . Only 13 left in stock - order soon. ... Stainless Steel Exhaust Header Manifold For Small Block Chevy Blazer S10 S15 2WD 350 V8 GMC Engine Swap SS T-304 Stainless Steel. $239.99 $ 239. 99.Shop On Sale Items Ford Custom 300 383 Chevy Small Block V8 Exhaust Manifolds and get Free Shipping on orders over $149 at Speedway Motors. Talk to the experts. Call 800.979.0122, 7am-10pm CST, everyday. REWARDS. GIFT CARDS. DEALS. TRACK ORDER. HELP CENTER. Shop. Parts. Learn. Toolbox. My Garage. Add a Vehicle. Account.Aug 18, 2009 · OLD THREAD - have reference for Chevy V8 pre-made black 90 degree spark plug wire that run under exhaust manifolds for stock distributor (Non HEI)? some of wires have to put in with car jacked up - so, to save getting up and to make custom ones ----- check summitracing.com , and others, for spark plug wire retainers like: OER / CX 1845, 1846, 1847Flowtech has brought back the "rams horn" design exhaust manifolds that were popular in the 1960's and 70's.Subscribe now to make sure you don't miss any of ...5121 posts · Joined 2007. #3 · Oct 13, 2015. The tri 5 Rams Horns have to be straight down. 66 chevy truck Rams horns will work. The 67 truck and many passenger cars the bottom is swept back. Those will not fit. Like. J. Jason 55 Discussion starter. 135 posts · Joined 2014.Chevy Exhaust Manifold, Rams Horn, With Generator Mount, Sma1l Block, 2", Left, 1955-1957. WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov.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.Exhaust Manifold, Rams Horn 1969-72 Chevy C10, Left Side. Exhaust Manifold, Rams Horn 1969-72 Chevy C10, Left Side (1) $111.99 /each. Add to Cart. Patriot Exhaust | #447H80501. Patriot Exhaust H8050-1 Tri-5 Header, 55-57 SBC, CC. Patriot Exhaust H8050-1 Tri-5 Header, 55-57 SBC, CC. Header Tube Type: Full-length. Finish: Ceramic Coated.I have a 1930 Model A Ford pickup that has a Chevy 350/TH350 in it. I have Mallory Unilite Ignition System and Edelbrock Performer cam/intake/4bl. I am using 2.5 inch Corvette Ram Horn exhaust manifolds. Therefore, I need to run the spark plug wires under the exhaust manifolds. I think this was the way it was done in the 60's.The Ram Horn Manifold has a larger diameter than other manifolds, which allows for more air to be pulled into the engine at once. This makes it ideal for cars with high-performance engines and high-power headers. The Ram Horn Manifold also has a low profile design, which helps reduce noise and drag when compared to other …The VERY LAST year for an exhaust manifold with a 2 1/2in outlet, for a SB, was 1965 (Corvettes and full size cars), and they were ONLY Ram Horn style manifolds. RAM HORN MANIFOLDS WILL WORK ON A CHEVELLE! Below is a picture of the style of 2 1/2in pipe which fits a Camaro, Nova, Chevelle. As can be seen, the first few inches has been reduced ...This is a Set of New Aftermarket Exhaust Manifolds for the 1967-1972 GM, Chevrolet V-8 Engines Item Description : Driver Side & Passenger Side, Chevrolet, GMC Pickup, Suburban, Blazer, 2WD Models Only Other Information : 2 Wheel Drive Models, Ram Horn Style Center Dump 45 Degree (Kick / Angle back), Fits the Chevrolet made Engines. 283, 305, 307, 327, 350Flowtech 11704-1FLT SB Chevy Rams Horn Exhaust Manifold, Silver. Material Type: Cast Iron. Finish: Ceramic Coated. Collector Diameter: 2-1/4 Inch. $452.95 /set. $504.00.Find many great new & used options and get the best deals for OEM GM SBC Ram Horn Exhaust Manifold 3846559 64-71 Corvette Small Block Chevy at the best online prices at eBay! Free shipping for many products!Dave. The Dorman part number for the left manifold is 674504 and the right is 674503. Now, if you want the GM casting numbers, the left side for 62-63 is 3797901. The 64-65 left side is 3846563 (has two FORWARD facing holes for alternator mount). The 62-65 right side is 3797902.Dorman Exhaust Manifolds 674-504 RNB-674-504. 4.75 out of 5 stars. Part Number: RNB-674-504 Estimated Ship Date: Jun 7, 2024Peyton, CO. Jul 12, 2005. #1. This isn't really a Cruiser questions except that the SBC is in the Cruiser. With a small block chevy and early points GM distributor and Ram Horn exhaust manifolds, I'm pretty sure GM routed the plug wires around the back sides of the heads and to the sides and then up to the plugs with 90 degree boots.1957-70 Exhaust Manifold, SB, RH, Ram Horn Style, 2-1/2", Hi-Perf. Replacement. Hi-Performance reproduction Ram-horn style small block exhaust manifold w/choke tube, R.H., features 2-1/2" outlet. Manifold has casting #3797942. This part is original equipment for multiple Hi-Performance GM vehicles...Error-Correcting Code (ecc), protects your system from potential crashes and inadvertent changes. So how about it be a ram server? Worth or not? Receive Stories from @ranlily Learn...These "rams horn" cast iron exhaust manifolds were patterned off the 1962-63 327 Corvette but are not OEM remanufactured manifolds (no casting numbers). They feature the big 2-1/2" diameter outlets and have provisions to accept original alternator type brackets. They are the perfect addition to a retro 327 style build: 365hp L76, 375hp L84, or 350hp L79 (all came with 2-1/2" outlets). These ...4x4Poet. 75 vettes had HEI with Rams Horn manifolds. Prolly a few years up as well. In case you don't have a block set up for Rams Horns, the top of the back of your block may have 1/4" course threaded holes awaiting rear-mounted ignition wire holder brackets. The bracket ends take the common 4-wire, slip-on holders.Accepts 3 bolt, 2.500" reducer flanges. Small Block Chevy 1955 & Up. Includes gaskets and mounting hardware. SOLD IN PAIRS. FEATURES: Fits 1955 - Up Small Block Chevy. These cast iron manifolds are designed to keep a similar geometry to block hugger headers while offering a more traditional look. Includes all gaskets and mounting hardware.Thus, an exhaust manifold (or headers) with a larger volume for hot expanding gasses will offer the least resistance (back pressure). Not only do 2.5in Ram Horn manifolds have a larger outlet, but when a 2in and 2.5in manifold are placed side by side, it is immediately apparent that the passages of the 2.5in manifolds are also bigger.Classic rams horn style exhaust manifold with a ground smooth chrome plated 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. See More. $335.99.Find Dorman Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Dorman exhaust manifolds offer a reliable, direct-fit installation for your vehicle. Manufactured from high-quality materials, they provide the perfect replacements for your worn-out factory piece. Dorman lends a hand in maintaining the exhaust manifold on your daily driver by providing the right fit at ...Find Flowtech Rams Horn Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Flowtech Rams Horn exhaust manifolds feature a tightly fit block-hugger design for popular hot rod and street rods. The cast iron construction is styled in the vintage "Rams Horn" design for maximum strength and engine clearance. The manifolds use smooth-transition, 1 5/8 in. diameter ...I like the 2.5" rams horn manifolds for a mild performance engine; you can buy reproduction versions for a great price at Speedway and perhaps other sellers. They were used in mis-60's Corvettes; the corvettes used heat shields behind the manifolds and routed the spark plug wires behind and up from the rear of the engine to the distributor...In the full size Chevy the first small block to get the 2 1/2" ram horn manifolds was the 300 hp 327 (1962-64). Those manifolds (and the 2" ones for the 283 and 250 hp 327) dumped straight down and 'fit' the frame. One could swap the 2" and 2 1/2" manifolds. They also were 'ambidextrous' (one could swap right and left sides).Smoothie Rams Horn Exhaust Manifolds Small Block Chevy SBC 283 305 327 350 400. $116.99. speedway_motors (299,710) 99.5%. 304 sold. SBC Chevy 327 350 Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair. $132.99. speedway_motors (299,710) 99.5%. 168 sold. Smoothie Rams Horn Exhaust Manifolds, Black, Fits Small Block …1957-70 Exhaust Manifold, SB, LH, Ram Horn Style, 2-1/2", Hi-Perf. Replacement, Front Brkt. Hi-Performance reproduction Ram-horn style small block exhaust manifold with side facing alternator mounting bracket holes, L.H., features 2-1/2" outlet. Manifold has casting #3846563. This manifold will work with 1965-1968 alternator bracket (#K6565).Exhaust Manifolds, Cast Iron, Silver Ceramic, 2.50 in. Collector, Rams Horn Style, Chevy, Small Block, Pair See More Specifications | Check the Fit Summit Racing™ Cast Exhaust Manifolds SUM-G9200SThe 2.5" rams cam on the bigger HP small block corvette. Like say 315 and up HP. The size of your exhaust should be in direct relation to the volume of spent gasses the engine puts out. if you have a small block even a smaller displacement small block that takes a pretty deep breath it will benefit greatly from the larger exhaust manifolds. Now ...This product shows signs of installation or other finish damage, but does not affect use or fitment. Classic rams horn style exhaust manifold designed for great classic looks with better flow than stock manifolds. See More. $427.99. pair. In Stock. $563.00. Save $135.01. Order soon, only 1 left in stock!DESCRIPTION --The "Rams Horn" style exhaust manifolds are great for use with most small block Chevy applications. --Made of premium nodular cast iron material that ensures maximum durability, resistance to deformation, high strength, excellent wear resistance, and high hardness. --The raw finish is suitable for painting with high-temperature coatings to achieve excellent looks under the hood ... Black ceramic finished cast iron performanRPC R900BOLT Bolt Kit, for SBC Ram Horn StyGreg Latvala said: 3797901 Corvette Exhaust Manifo

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I'm bolting the Rams Horn manif.

Smoothie Rams Horn Exhaust Manifolds, Small Block Chevy, Silver (18) Material Type: Nodular Iron. Finish: Silver ceramic coated. Collector Diameter: 2-1/2 Inch. $219.50 /pair. $278.00. Add to Cart-10%. Flowtech Exhaust | #425117041FLT. Flowtech 11704-1FLT SB Chevy Rams Horn Exhaust Manifold, Silver. Material Type: Cast Iron.Sell now. NEW SBC Small Block Chevy HD Ram Horn Exhaust Manifold Bolt & Stud Kit / 1. Parts Pros. (152721) 99.1% positive. Seller's other itemsSeller's other items. Contact seller. US $39.99.Dodge Ram pickup tricks come equipped from the factory with a stereo system that includes rear speakers mounted in the rear side trim panels. If you want to install new speakers in...The Insider Trading Activity of Horn Barrett on Markets Insider. Indices Commodities Currencies StocksRandom access memory, or RAM, is how your computer opens, reads and runs the software you use, from your operating system to PC games. RAM modules are often measured in megabytes (...Exhaust Downpipes, Stainless Steel, Natural, 2.5 in. Diameter, Chevy, Small Block, Pair See More Specifications | Check the Fit. Pypes Stainless Steel Exhaust Downpipes DCC10S PYE-DCC10S. 3 out of 5 stars. Part Number: PYE-DCC10S. ... Fits applications with original 2.5 in. ram horn manifolds.SBC Rams Horn Exhaust Manifold Connection to Downpipe Thread starter B y r o n; Start date Jan 20, 2015; This ... Exhaust Manifold Heat Shield. MatthewMcD; Nov 16, 2023; Replies 6 Views 929. Nov 16, 2023. MatthewMcD. Horn Parts. rawfj40; Apr 29, 2024; Replies 8 Views 463. Apr 29, 2024. rawfj40.Flowtech 11704-2FLT SB Chevy Rams Horn Exhaust Manifold, Chrome Finish. Finish: Chrome. Collector Diameter: 2-1/4 Inch. $268.55 /set. Add to Cart-10%. Speedway Motors | #9300331. Smoothie Rams Horn Exhaust Manifolds, Small Block Chevy, Black (8) Material Type: Nodular Iron. Finish: Black painted. Collector Diameter: 2-1/2 Inch. $226.79JEGS 30100 - Chrome Rams Horn Style Exhaust Manifolds [Fits Most Round/Square Port Small Block Chevy Stock Cylinder Heads] $206.17. JEGS 80427 - 123-Piece Tool Set with Carry Case $54.67. JEGS 1125 - Heavy-Duty Nitrile Gloves [7 mils Thick, X-Large] $35.97. JEGS 30110 - Cast Iron Rams Horn Style Exhaust Manifolds [Fits Most Round/Square Port ...JEGS Rams Horn Exhaust Manifold | Fits Most Stock Cylinder Heads With Round/Square Port Small Block Chevy Engines | Chrome Finish | Includes 1 Pair | Fits Most Straight/Angle Spark Plug Heads. dummy. 1 SET SHLPDFM Ground smooth Plain Rams Horn Exhaust Manifolds WITH all gaskets and hardware Compatible with Small Block Chevy SBC 283 305 327 350 400.The ramshorn manifolds only have the bolt holes. The chrome alternator bracket needs to have the front hole enlarged so it will line up with the manifold holes. A better choice and what I did was to get a stock 68 camaro v/8 alternator bracket.The easier it is for air to flow through, the more power you can ultimately make. Speedway Motors has a variety of exhaust manifolds for classic Small Block Chevy engines to Ford Y-block engines and beyond. From cast iron “ram horn” Chevy 350 exhaust manifolds to turbo exhaust manifold options for LS turbo swaps, cast headers, and more, we ...Yes find an exhaust shop that will bend you a couple of pipes in the diameter of the rams horns outlets.Some are 2 1/2 and some are 2 inch. For the flanges,if all you can get is the flat 3 bolt flange you can add the chamfer with a die grinder and round cast iron bit.If the shop doesn't have a mandrel bender,and most likely they don't,just have ...Find many great new & used options and get the best deals for Chevrolet GMC Chevy GM 3896956 Exhaust Manifold Passenger Side 283 327 Original at the best online prices at eBay! Free shipping for many products! ... item 1 283 327 350 Exhaust Manifolds 5.7L Chevy GMC Van Pickup Truck V8 Ram Horn SET 283 327 350 Exhaust Manifolds 5.7L Chevy GMC ...Peyton, CO. Jul 12, 2005. #1. This isn't really a Cruiser questions except that the SBC is in the Cruiser. With a small block chevy and early points GM distributor and Ram Horn exhaust manifolds, I'm pretty sure GM routed the plug wires around the back sides of the heads and to the sides and then up to the plugs with 90 degree boots.1004 posts · Joined 2011. #2 · Apr 3, 2017. I went with the factory ram horns off a late 60's - early 70's chevy pickup. They are 2 inch I believe and they angle back, they do not dump straight down. I also went with a powermaster 9100 mini starter just because i wanted more clearance. You could use them but your exhaust guy will have to cook ...The Dodge Ram Big Horn package includes several interior upgrades, cosmetic appointments and dual exhausts. All Big Horn packages include 20-inch aluminum wheels, fog lamps and hal...I recommend a product made by Cerakote, it's a high temp. coating, I've used on several SBC ram horn manifolds as well a complete exhaust systems. It requires a oven that reaches 250-300 degrees. Most powder coaters have access to this product, it's available in many colors.SBC Exhaust manifold 3797901 w/choke holes. Discussion in 'The Hokey Ass Message Board' started by Edger, Aug 25, 2013. Joined: Aug 22, 2009 Posts: 32. Profile Page. Edger. Member. from Ojai, Ca. I bought a set of SBC ram horn manifolds on ebay but the guy didn't show or talk about the choke holes in the top of the left side manifold. I have ...Dorman Products Exhaust Manifold Kit 1969-72 Chevy/GMC C/K Truck, G/P Van, Blazer, Jimmy, Suburban 5.7L. Part Number: 326-674-199. Product Q&A View Now. Click image to zoom. Video. $149.95 $146.17 SAVE $3.78 1 left in stock Lowest Price Guarantee $ + $ $ Exhaust Manifold Kit ...11349 posts · Joined 1998. #8 · Nov 27, 2007. Rich is 100% on the money. To the best of my knowledge, there IS NOT a good, free flowing cast iron exhaust manifold that will fit a Chevelle with a SB. In the history of SB Chevy exhaust manifolds, the BEST ones were the 62-65 2 1/2in Ram Horn used on Vettes/full size cars.Definitly wanting to use the Ram Horn Manifolds on my engine I want quiet and reliable and are done using headers at this point. Looking at these - ... A forum community dedicated to all Chevy Nova, Chevy II, Acadian owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and ...Find Exhaust Manifold Heat Shields and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: REWARDS. ... Chevy, Small Block, Set of 4. Part Number: OPG-DESPB12. 5.0 out of 5 stars. Estimated Ship Date: Today...Loading Estimated Ship Date: Today.SBC Rams Horn Exhaust Manifold Connection tIt has rams horn manifolds, moderate per

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The SBC will show a 15-20 hp gain for a equal lengths over the OEM drop manifold, but against the rams horn or shorties its more like 10 at red-line and WOT. Often equal lengths will show considerable droops in power output when the engine RPM isn't in an area compatible with the resonant frequencies of the pipes.Hot Rod did a test and found and compaired manifolds/ extrune honed manifolds/ headers. The extrune honed mmanifolds were only +5hp gain. The headers were like 28HP gain. The motor was a 454/425 hp create motor. The more potent the engine the more the headers will help or the worse the the manifolds will kill horsepower. Jim861 posts · Joined 2021. #13 · Jan 18, 2021. when installing replacement ram horn manifolds be sure to replace spark plugs before install - I just learned how difficult that it can be to change plugs on passenger side front two cylinders (#4 / 2), and driver side rear two (#7 / 5) when you have rack & pinion set up. Like.1955-57 Small Block 2" Rams Horn Exhaust Manifold Chevy Exhaust Manifold, Rams Horn, Small Block, 2", 1955-1957 Replacement Center-Dump Manifold Cast-Iron Construction Fits Left Or Right Side Includes Manifold Studs & Nuts Generator Bracket Mount Not Included Does Not Have Heat Choke Tube Provision1004 posts · Joined 2011. #2 · Apr 3, 2017. I went with the factory ram horns off a late 60's - early 70's chevy pickup. They are 2 inch I believe and they angle back, they do not dump straight down. I also went with a powermaster 9100 mini starter just because i wanted more clearance. You could use them but your exhaust guy will have to cook ...SBC Exhaust manifold 3797901 w/choke holes. Discussion in 'The Hokey Ass Message Board' started by Edger, Aug 25, 2013. Joined: Aug 22, 2009 Posts: 32. Profile Page. Edger. Member. from Ojai, Ca. I bought a set of SBC ram horn manifolds on ebay but the guy didn't show or talk about the choke holes in the top of the left side manifold. I have ...View attachment 1022510. I kept the dimensions the same with regard to the passenger side crossover to the exhaust manifold. The drivers side is now below the crossover and I like the fact it is longer. It's actually 2" taller right now but I will adjust the height as needed during the final build. Sectioning 1" out of the 2 45's in the middle ...Apr 5, 2020 · 861 posts · Joined 2021. #13 · Jan 18, 2021. when installing replacement ram horn manifolds be sure to replace spark plugs before install - I just learned how difficult that it can be to change plugs on passenger side front two cylinders (#4 / 2), and driver side rear two (#7 / 5) when you have rack & pinion set up. Like.UNFORTUNATELY, there was NEVER a 2 1/2in factory ex manifold for the Chevelles. In the history of the small block Chevy engine, the ONLY 2 1/2in manifolds were the Ram Horn versions for 62-65 hi-perf 327s (ONLY in Vettes and full size cars). Tom Parsons. TC# 474.56 posts · Joined 2016. #5 · Jun 28, 2017. Actually Big Dave, just looking at mymanifold closely again, it looks different to the one in the link that you sentfor the manifold bolts and studs. In the link is a pic of a rams horn manifold.In that pic there are six bolts visible and a further four flat 'blanked' offareas next to the bolts.Ram Horn Exhaust Manifold 3932461 Small Block Chevy SBC. Opens in a new window or tab. Pre-Owned. 5.0 out of 5 stars. 1 product rating - Ram Horn Exhaust Manifold 3932461 Small Block Chevy SBC. $34.99. midnightrider1978 (595) 100%. Buy It Now +$34.14 shipping. derosnopS.The Dodge Ram comes equipped with the BeltAlert restraint system indicator. BeltAlert uses the seat sensors in your vehicle to sense when a passenger or driver is not wearing their...Shop all Speedway Rams Horn Exhaust Manifolds. Product Summary. 265, 283, 327, 350, 383, 400, Nodular Iron, Raw. Closeout. This is a new item in factory packaging we will no longer be carrying or stocking. Classic rams horn style exhaust manifold with a ground smooth appearance for great vintage looks. Features Corvette style 2-1/2-inch outlet ...SBC Exhaust manifold 3797901 w/choke holes. Discussion in 'The Hokey Ass Message Board' started by Edger, Aug 25, 2013. Joined: Aug 22, 2009 Posts: 32. Profile Page. Edger. Member. from Ojai, Ca. I bought a set of SBC ram horn manifolds on ebay but the guy didn't show or talk about the choke holes in the top of the left side manifold. I have ...Fits most stock sized round/square port 1955 and up SBC heads with straight or angled spark plugs. Made out of high quality cast iron and available in raw, chrome, black or ceramic coated finishes. OEM styled to replicate the original units. Includes gaskets, and mounting hardware. 2.5″ collector outlet size. Sold as pairs.Exhaust Manifolds, Cast Iron, Natural, 2.50 in. Collector, Rams Horn Style, Chevrolet, Small Block, Pair. Part Number: SUM-G9200N 4.52 out of 5 starsThe angled dump rams horn manifolds may fit better, but they are 2”, not 2.5”. It just depends on whether you want the 2.5” exhaust. Both angled dump and straight dump clone manifolds are available from many sources, and for about $140-180/pair they appear to be identical to those sold by Dorman. Bruce. Bruce. SBC Exhaust manifold 3797901 w/choke holes. Discussion in &#