And yes I know I have an exhaust leak. With a curb weight of 3073 lbs (1394 kgs), the Gremlin 1974 304 V8 Levis has a naturally-aspirated V 8 cylinder engine, Petrol motor, with the engine code AMC 304 V8. The 360 heads have bigger valves. It was an optional engine in … Shop 304 AMC V8 parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. All of the smog hardware has been removed. The horse power and torque specifications of the last version of the 304 narrowly beat the 258 use at this time. They have hot cams for your 304. based on my experience, the small bore is the big limit on making good power. Free shipping. Summit Racing SUM-K8600 - Summit Racing® Classic Cam and Lifter Kits. AMC 5.0L-304ci-V8 Engine Torque Specs. Exactly the same amount of money for parts, but performance potential is much greater, and were a AMC 304 unbolted, a AMC 360 or larger will bolt right back in! The 304 is an under-rated engine in my opinion. Lots of people thought I was running a SBC conversion until I'd open the hood. If you want real proof look at something like Garrett Ghezzi's SS car with a 290, one of the fastest traditional SS cars there is for running under index. AMC V8 Engines - From GEN-1 Nash/Hudson/Rambler V-8s (1956-1966) through to the … Being remedied when FedEx runs. In a "run what you brung" world, the 304 should be acceptable for a performance build. The AMC 304 was introduced in Jeep vehicles in 1971 in J-series pickups and Wagoneers and in 1972 in the CJ vehicles. Four cylinder engines. The 390 and 401 engines used larger ones than the smaller 304, 327, and 343 mills. The AMC 304 V8 had a displacement of 303.92 CID which produced 210 hp in 1970-71 and was built starting in 1970. $2,800.00. General Information The 304 small-block V-8 was introduced in 1971 to replace a 290-cubic inch model of the same engine. FlowKooler 330-160 - FlowKooler Robertshaw Series High Performance Thermostats Thermostat, High Flow, 160 Degree F, Copper/Brass, AMC, GM, Chrysler, Ford, Each Part Number: BRA-330-160 Idle for AMC 304 with a Comp Cam XE256H dual exhaust. A little better parts availability, but that really does not matter much. AMERICAN MOTORS 5.0L/304 AMC V8 Camshaft Kits. Early 304s performed well, so well that frame changes were made to the CJs in '73 to prevent cracks. This AMC 304 crate engine by Blue Monkey Performance would be EXCELLENT for that AMX, Jeep, Wagoner, CJ, CJ5, CJ7 and etc.This engine comes equipped with a Edelbrock Dual Plane square bore flange intake and will run on leaded or unleaded Premium pump fuel. I had a 304 in my mud-bogger Jeep. There will need to be some clearancing done to the block for the rods, and pistons skirts. The 1970 AMX 390 remained at the same displacement by using a special rod and piston for this year only. 62 watchers. I put a performer /edelbrock 650 and dual exhaust/ stock manifolds in a 1979 AMX. That's why almost everyone will suggest a 360 or 401, although a 401 is a lot harder to find and takes more money. Search Car Torque Specifications by Engine or Model In 1970, all three blocks grew in deck height and gained a new head design. but on the track, it was no faster. The Ford guys may stroke kit an engine, but most will bolt on performance of some kind as it is not just easier, just plain cost effective for the gains. Without addressing that problem must stay in stock rpm range. Stock 304 Rods and rod bolts are weak link. 304 & 360: / 3.44 390: / 3.57 401: / 3.68 401 and 390 cranks are not recommended to swap into 290 or 304 blocks. Thank you. The heads are very good stock and shockingly effective prepared right, and if you want they can rev fine. Several ATI Super Dampers are listed for AMC 304-401 engines, including units for internal and external balance crankshafts. The 258 used between '80 and '81 was putting out A turbo and NOS should get 450 HP on a stock built motor, with a nice mid range cam on pump gas. Having smaller valves good boost will compensate. Includes Power Steering, Hi Rise intake 258 replacement. With a curb weight of 3073 lbs (1394 kgs), the Gremlin 1974 304 V8 Levis has a naturally-aspirated V 8 cylinder engine, Petrol motor, with the engine code AMC 304 V8. Or a Junkyard Q-jet is good if you know how to work'em. Home > AMC SORT PRICES SHOW ITEMS PER PAGE. A-Team Performance HEI Complete Distributor 65,000-volt Coil Male Cap Compatible with AMC Jeep V8 290, 304, 343, 360 390 401 One Wire Installation, Red Cap 4.4 out of 5 stars 117 $83.99 $ 83 . It is believed that AMC kept the 390 t… I think if you put more effort into torque around 4500 RPM would be more beneficial than trying to get 300 hp out at 7000 RPM. about our high performance crate engines: CAROLINA MACHINE ENGINES is an expert at extracting the most horsepower and producing the most dependable High Performance Pump Gas street engines available. The 290/304 have tremendous potential and can make some serious power. Don't remember cam specs, but around a 290 duration with a .500 lift. Refurbished. So, dollar spent should be on bolt on stuff. The 304 and 360 share the same stroke, the 360 has a bigger bore (4.08 vs 3.75). .125 is not a problem usually, but it needs to be sonic tested. During the 33 years that AMC produced cars, one of its stand-out engines was the small-block 304 V-8 that ended up powering many Jeeps. Easily revved to 6500. Having thicker walls helps on the 304. a 360 has the same stroke and it runs rings around the 304, and the 360 also responds to mods better too. 1972-78 models were rated at 150 hp. this car has a 998, and 2.87TG. Mods include 1-5/8" Hedman Hedders, 3" dual exhaust, & Flowmaster's Delta Flow 40 Series Mufflers. This engine produces a maximum power of 152 PS (150 bhp - 112 kW) at 4200 rpm and a maximum torque of … It had a bit better driveability. Not the best shot, but a video of me in my high horsepower amc 304 cj7. There's no replacement for displacement. With a curb weight of 2820 lbs (1279 kgs), the Gremlin 1970 304 V8 X has a naturally-aspirated V 8 cylinder engine, Petrol motor, with the engine code AMC 304 V8. Unless there is some rule requiring a 304 a 360 is a better plan as it is more cost effective for power. This engine produces a maximum power of 152 PS (150 bhp - 112 kW) at 4200 rpm and a maximum torque of … American Performance Products Heres another excellent source of hipo AMC stuff. The 304 was dropped by the end of 1981—likely due to the fact that AMC's six-cylinder was making more horsepower than it, and its emissions were no better than the 360's. ©2021 Ultimate Specs - The Most Comprehensive Car Specifications Database. And my preference would be the later versions with a lock up torque converter and I would have a 2200 rpm stall lock up converter installed at the bare minimum. It will make more torque and power, and deliver the power at a lower rpm. I never had it dyno'd but it was easily 300HP. 99 As part of the tuneup procedure, you can adjust the timing on the 304 to synchronize the spark produced by the ignition coil with the pistons during their four-stroke cycle. You just can't argue with 56 more cubic inches at the same cost, weight, and installation; bigger is always better. I very seriously doubt Ill drag race this one. Over boring won't do much and stroking is to costly compared to obtaining a 360. When I did my simple bolt on mods to my 73 304, it livened up well. Do you hear the Ford guys telling the novices to ditch the 302 and build a 351? 2 1979 AMXs, and one 1972 Gremlin. Balanced. Meeting legal requirements for smog controls on the 304 severely hurt performance … Over 6,000 Automotive Torque Specs. Air-cooled 108. I would have no problems deciding to build a 904 transmission or a 998 for a street performance AMC V8 engine of any size. mostly because dual exhaust an better intake with a 650 cfm carb. Watch; S p o n s o r e d. Jeep AMC 304 V8 complete running Low Milage takeout engine 4 Brl carb WILL SHIP . Idle is set at 800 RPM. For example they are a far more capable engine than a 302 Ford, and look at what people think of those. Not as often as AMC folks dismiss the 304. All specifications, performance and fuel economy data of AMC Javelin AMX V-8 304 (112 kW / 152 PS / 150 hp), edition of the year 1974 since September 1973 for North America U.S., including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0-200 km/h, quarter mile time, top speed, mileage and fuel economy, power-to-weight ratio, dimensions, drag coefficient, etc. Stock 360 heads flow better by valve size, no machining needed. It's a solid performer with some upgrades. Filter Results Filter by Vehicle Individual Parts; Part Groups; Results 1 - 25 of 41 25 Records Per Page Default Sort . Over 40.000 technical specs!! I have an AMC 304 w/ 20k miles in excellent condition. These changes made this the third generation of AMC V8, hence it is sometimes referred to as the "Gen-3" AMC V8. 401 cranks will drop into a 360, or 390 block. Freight. Some AMC models I would like to own in the future if I have the chance are the 1977-1979 AMXs, 1978-1979 Pacer coupe, 1974-1975 Gremlin X Rallye and 1974-1975 Hornet Rallye X . ATI Performance Products also makes available AMC harmonic balancers. Here goes. Ive had 3 cars that came with 304s. Information about AMC engines and their specifications. Pre-Owned. 304 AMC V8 Engine parts in-stock with same-day shipping. Buy It Now. Aren't the 304 … American Motors used several four-cylinder engine designs. Edelbrock Torker with a Holley 600. It was bored .030", rods shot peened, 10.5 forged pistons. Building a stock 304 is too costly in HP return over grabbing a 360 and living with stock head setup. Bulltear.com - Home As mentioned, your going to make your YJ a rocket ship so you will need a lot of extra build up to handle the power. A mildly built free breathing 304 will generate great power without breaking the bank. $2,895.00. I have another 1979 AMX, but this one is completely stock and has the SR4 4 spd. Do you hear the Ford guys telling the novices to ditch the 302 and build a 351? Summit Racing SUM-K8600 - Summit Racing® Classic Cam and Lifter Kits. The 107.8 cu in (1.77 L) is an AMC designed air-cooled V4 engine that was used in AMC's lightweight aluminium-bodied M422 'Mighty Mite' military vehicle, built from January 1960 to January 1963 as an air transportable (by the helicopters of the time) Jeep for the U.S. Marine Corps. Adding a cam would even bring more power.
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