Offenhauser intake amc 258 6257-DP Offenhauser Dual Port Single 4BBL Manifold 1981-1988 Engine is an AMC 258. 3% positive; OFFENHAUSER INTAKE MANIFOLD 4-V AMC JEEP DUAL-PLANE 6257 232 258 6 Cyl FREE SHIP. Save Share 1982 Scrambler, 258-6 dual port Offenhauser intake with 390 cfm holley 4 bbl. So I plan on getting the holley efi sniper. Quote OhioRambler66. The six is . Sold as a pair. 2l with a 2bbl intake from a 1980. 95, 6258 C for $363. I would love an intake like this for my Blue Hornet 258. 2L/258 Offenhauser Intake Manifolds, Carbureted and get Free Shipping on Orders Over $109 at Summit Racing! There are several Offenhauser six cylinder intake models available for AMC 199, 232, and 258 six cylinder engines. 5. Here's the problem. 2L/258 Intake Manifolds, Carbureted and get Free Shipping on Orders Over $109 at Summit Racing! Use your Summit Racing SpeedCard today, and get up to 10% back - Get Details! NOS OFFENHAUSER INTAKE MANIFOLD 4-V AMC JEEP Dual-Port 5999 232 258 INLINE 6 Cyl. . bbgjc . 43 ) Not for Sale. Runs great but probably will be counting gallons per mile instead of miles per 1986 CJ-7, AMC 258 bored . Offenhauser C Series intake manifolds fill the gap between stock and competition setups for 4 and 6-cylinder cars and pickups. Bernie's CJ Jeep Parts is your best source for Offenhauser products with the best prices available. Save Share If you go with an Offenhauser or Clifford intake manifold they can take a 4 barrel Holley. 1986 CJ-7, AMC 258 bored . $551. Estimated Ship Date: Jun 3, 2025 if ordered today Find Parts and Accessories jeep 258 intake manifold KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Offenhauser Dual Port Intake Manifolds 6257-DP Intake Manifold, Dual Port, Aluminum, Natural, Square Bore, AMC, 258, L6, Each Gasket, Manifold, Intake, AMC, International, Jeep, Each. Gutless AMC 4. Quote 1970390amx. The Edelbrock carb site indicates the smallest is a 500cfm. It'll get a 4. 5" SSR Tires Painless Wiring, Stainless Steel Dash. bdmonist. Adapters. So the intake and exhaust manifolds are from the original '89 4. Description Reviews (0) Description American Motors 6 Cylinder. Part Number: 6258C UPC: Shipping: Calculated at Checkout. Offenhauser makes a 6257DP and a 5999DP the only difference I can see is that one says 360 degree. Check your Owners Manual for your Fuel Tank Capacity and Tank Dimensions to ensure you are ordering Find 1978 AMERICAN MOTORS 4. Model: Clear: Offenhauser 6144DP 2000cc Datsun OHC Dual Port 2 BBL Manifold quantity Offenhauser 6257DP 1981-1995 Jeep/AMC 258 Dual Port Intake Manifold $ 629. You can use a late 80-90 AMC 258 intake and exhaust with an adapter for an Autolite 2100/Motorcraft 2150 small 2V carb I'm after a Offenhauser Dual Port intake manifold for a AMC 258. Estimated Ship Date: Tomorrow. Every 258 with a 4bbl intake I have worked on has had fuel puddling on the intake floor, and there have been a few. Just need help from fellow cj5 gear heads. Read more Offenhauser 6138DP 1975-1977 Datsun 1600cc OHC Dual Port Manifold 2 BBL Offenhauser Dual Port Intake Manifold 1981-’95 AMC 258. 258 4. I don't remember the exact years, but your '74 should be the same set-up. Is it more carb than needed on this engine, yes. Post by tgreese » Tue Dec 15, 2020 2:56 pm. Depending on how you use your Jeep and what shape the 258 is in, a better flow exhaust header might be worth the work. Product Categories. The problem is that the metering and AMC Nut Joined: Jun/12/2022 Location: Wisconsin Post Reply. Join Date: Apr 08, 1997; Posts: 1972; Share Tweet #2. 1483 posts I'm putting together the pieces to put an Offenhauser intake on my 258. 0 head and a aggressive head. SC397 . AMC 290; AMC 304; AMC 343; AMC 360; AMC 390; AMC 401; Arias Components Engineered; Baffle; Barracuda; Block Off Plate; Breathers; Offenhauser 360 Degree Single-Quad Dual-Port Intake Manifolds 5999-DP Intake Manifold, Dual Port, Aluminum, Natural, Square Bore, AMC/Jeep, 199, 232, 258, L6, Each Part Number: OFY-5999DP -Offenhauser open plenum intake or Clifford I have several of each to choose from. I tried a 4 barrel intake from Offenhauser and it required too much work to get it on. I have the intake (part number 5999) the carb (holley truck avenger 470) and a whole lot of questions. I would like to try and get the secondaries working. Please Click on the "Read More" link for additional details about this Hi, I just installed a Holley 390cfm carb (4160) on an Offenhauser 4bbl intake on my 73 Commando. Fits 1981-Later AMC 258 Straight 6; Single Port Design; Square Bore Style; Increases Fuel Economy! Increases Horsepower! Performs from 2,500 RPM to 7,000+ RPM; Made in the USA Find many great new & used options and get the best deals for OEM Offenhauser Dual Port Intake Manifold 5999 Jeep AMC 258 L6 199 232 at the best online prices at eBay! Free Get the best deals on Offenhauser 6257DP Dual Port Intake Manifold 1981-1988 Jeep/AMC 258 4. $601. gt4660. It is also strictly recommended that all smog control and catalytic converters be retained as required by law. About eBay; Announcements; Community; Security Center; Seller Center; Offenhauser 1034 Dual Carb intake manifolds provide a nostalgic appearance while equalizing fuel distribution to all cylinders, improving both performance and economy. Estimated Ship Date: Today. 2L/258 Intake Manifolds, Carbureted 4-barrel square bore Carburetor Mounting and get Free Shipping on Orders Over $109 at Summit Racing! Natural, Square Bore, AMC, 258, L6, Each. Would like to try that out too just for fun. And I put on a pacesetter header, and the offenhauser intake. $841. Jeep CJ5 Body Parts 1976-1983; Jeep CJ5 Brake Parts 1976-1983; Jeep CJ5 Clutch Parts 1976-1983 Offenhauser Dual Port Intake Manifolds The Offenhauser Dual Port Design is best described as two separate manifolds in one resulting Intake Manifold, Dual Port, Aluminum, Natural, Square Bore, AMC, 258, L6, Each. 030 over, Offenhauser Intake, Holley 390 Carb, Borla Header, D30 Front & AMC 20 Rear (One Piece Superior Axles), 4. Free ShippingLoading Estimated Ship To start off, I replaced a Holley 4bbl carb mounted on an Offenhauser intake. Open Plenum/Single Plane/oversized runners/Water Jacket to atomize air/fuel. 0 head. Summit lists the following models; 6257 DP for $301. Offenhauser, Aluminum, Intake Manifold, Jeep 258. Shipped with USPS Ground Advantage. The big Came across a post earlier where a person was wondering if a Offenhauser intake would work with Hedman headers. I was also talking to someone at a swap meet this weekend and they were telling me about a head swap on the jeep that increases the Hp. Three of them are only specified for the 258 six only while the A wide assortment of Offenhauser Intake Manifolds is available for many different engines. The iron 2 barrel isn't a light Specs: 78CJ5 with 258 inline 6 with the following: Offenhauser intake holley 390cfm 4 barrel K&N air filter (getting dirty) in this thread in this sub-forum in the entire site. 0 stroker motor using the 258's crank to make a 276 cubic inch motor. My Question is this, What else can i do to bump up the HP and Low end Torque on this Bought an 80 CJ-7 with 258. Holley Adapters; EGR Adapters; Air Cleaner; AMC. I helped my friend put in a 4. $135. 2L/258 AMC and Jeep L6 Cylinder. This fits AMC Jeep 199, 232, 258, L6, 6 Cylinder. Free ShippingLoading Estimated Ship Date Offenhauser Dual Port intake manifolds feature completely separate runner systems for the primaries and secondaries for more power across the The only Company I know of that makes a four barrel, 4 liter intake is Clifford. and I'm unsure between the Offenhauser and Clifford intakes. the block is zero decked, it has a comp cam, roller rockers and Chevy 350 intake and exhaust valves. Post Reply. 2L/258 Offenhauser C Series Intake Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Add some muscle! Offenhauser C Series intake manifolds fill the gap between stock and competition setups for 4 and 6-cylinder cars and pickups. Ok all, I have searched and searched and seem to be able to find only 1 company that makes a intake manifold for my AMC 258 i6 / 4. G. The Offenhauser intake never fit right. AMC 290; AMC 304; AMC 343; AMC 360; AMC 390; AMC 401; Arias Components Hi everybody, I just installed offenhauser 6257 DP in my 1981 CJ I6 258 + Holley TA 470, the low end performance is very good. Do not use the 4 barrel Holley 390cfm or you will be VERY sorry. This is the dual port 6257 model. The four barrel Clifford and Offenhauser intakes are easy to come by. 030 over, Headman dual outlet headers, offenhauser intake, holley 390 carb, DUI performance ignition Six in a Row Makes it Go! Save Share Reply Quote Like. 3% positive; Offenhauser Dual Port Intake Manifold; Jeep 258 Intake Manifold; Amc V8 Intake Manifold; Oldsmobile 455 Intake Manifold; Offenhauser 360 Intake; Olds 455 Intake Manifold; With the head you will need NEW 4. All these products should be installed in accordance w/ state regulations about emission standards. 99 (1) Ships Today FREE Shipping Lowest Price Guarantee. but the carb runs like crap if the idle jet is wrong. I slowly built a 258 out of a 1976 AMC Hornet as I got funds for about a year or so, while I continued to daily drive Mr Jeep. Offenhauser 5920 1949-1964 Ford/Mercury V8 Engine Adapter Offenhauser Dual Port Intake Manifold 1981-’95 AMC 258. Part Number: OFY-6208C. Working on a 82 CJ 7 Frame up resto. okjeep98. 40 over, balanced, torque series cam, five angle valve job, offenhauser intake, headers, MSD Pro Billet distributor plus the box and coil that go with it, Holly 390 that was pro built for off road, not an off the shelf carb, 2 gage battery cables, simple mod but battery cables are important when winching I have a Holley 390 4 barrel on my AMC 258 i6 / 4. in the future (when the 258 poops out) I got hold of a 350 to shoe horn in to it. Thread starter CJ777; Start date Start date: Dec 23, 2010; Last post Last post: Dec 23 #1 I have a 77 I-6 AMC 258 i6 / 4. 2l AMC 258 i6 / 4. AMC 199; Offenhauser 1034 Dual Carb intake manifolds provide a nostalgic appearance while equalizing fuel distribution to all cylinders, improving both performance and economy. Your new Clifford Intake requires Offenhauser Dual Port Single 4BBL Manifold 1981-1988 4. In 1996 my Dad and I did a Saturday 6 or so hour engine and clutch swap with my Hornet engine. 4. it will bolt right in without alot of modifications. 5x 15's, Besrk Made Front/Rear/TC bumpers, Mastercraft Seats, Poison Spider Full Cage, LineX Interior Shop Car & Truck Intake Manifolds for AMC with eBay Guaranteed Fit. Both of them go for between $300 and $400. Add to quote #1 · Dec 15, 2002. TAKE THIS INTO James 1982 CJ7 w/ YJ Tub, 258I-6 . I need to get a new diaphragm for secondaries. Edited by Javelin Dan - Sep/11/2023 at 6:10pm Scoop on fitting #7120 head on 258 motor Just got into the act of owniing an Amc Eagle and used a lot of Farna's info but I have discovered the following facts. 0 intake is bolt on; if you choose to go with an aftermarket or stock The AMC Eaglepedia can now be accessed using the buttons found below This is a comprehensive The Mighty 258 » Fuel Systems. The picture I posted was a early style "Offenhauser" intake on a 88' Wrangler AMC 258 i6 / 4. I also have a 4,0 HO head on it with a Clifford header. These are the dual 4 barrel types that I want to put on my 390 engine. Got it all torn apart and started putting it back together, then I ran into a problem. 2 intake and keep the carb. INTAKE MANIF Posted: Feb/26/2008 at 10:59pm: Has anyone bought this for their 199/232 or 258 I6 ? If so , how were the results and Get the best deals on Offenhauser 6258C C-Series Intake Manifold 1981-1988 Jeep/AMC 258 4. Not Yet Reviewed. New England Vintage auto parts (1249) 98. Add to Watchlist. 5" Spring & 3" Body Lift, 35x12. Still availible new,and Ebay is a good source of used ones. Hi, I just installed a Holley 390cfm carb (4160) on an Offenhauser 4bbl intake on my 73 Commando. I'm wanting to build a 258 with a HO 4. I decided to go with an Offenhauser 6208C Intake, Hedman headers, and a Weber 32/36. rlaexpdzmysxolbijfwzhksjlanhvolrxchpcwqkcozuylrbbfkknvvcidsokngxrfdsyxhma