Summit Racing SUM-K8600 - Summit Racing® Classic Cam and Lifter Kits. 5 watchers. Information about AMC engines and their specifications. I have a complete NV3550 setup from a 2000 TJ that will be going in my Jeep GW. They are easy to find parts and better on gas. Join thousands of other Jeep fans as we tackle Wrangler problems and more. Freight. 904727flexplate by Rick Jones, on Flickr This is a second style flex plate 304 which actually may be the first style. : slight gear-grinding when shifting from 1st to 2nd. http://m.urbandictionary.com/#define?term=Liberal%20douchebag. The horse power and torque specifications of the last version of the 304 narrowly beat the 258 use at this time. Seem to be plenty of power, (for me) lots more power than the 2.5 L in my YJ. Cam and … 2005 TJ windshield frame and bolts seized, broken, extractor snapped off..HELP. sure it don't sound like a v8, but i believe it is the better motor of the two, if you want a "real upgrade" then go small block chevy. Good luck! I've had both the 258 and my current 304. AMERICAN MOTORS 5.0L/304 AMC V8 Camshaft Kits. -1974 Javelin (304 V8, Auto)- ( 304, 360, 401, 258, 242) If you get a Jeep with the T150 3 speed the bellhousing is the same on the v8 as on the I6. i like a mix, psst...dont tell any of my Jeep friends, but if my 401 ever goes south, Im dropping in a 454. + ... JEEP AMC 258 4.2 CID INLINE 6 CYLINDER 1975 - 1979 LONG BLOCK ENGINE. If I need a 4bbl lately I buy an AFB at a swap meet and a rebuild kit and rebuild one. The 304 used from '80-'81 in CJs, J-series pickups, and Wagoneers suffers in performance. lug capability! There is no such thing as a AMC BIG BLOCK all were SMALL BLOCKS. I cannot make them just for Jeeps but I try. Precision CMM mapped and machined, offset dowel locators and fastening points assure total concentricity for long transmission life. As of now I am thinking I will leave the stock Dana 30 front axle and Dana 20 rear (with new one piece axle shafts). The adapter plate is .750" in length and is manufactured from 356-T6 heat treated aluminum alloy. I was like yeah right I'll keep my v8. SKU 10680700. I would say it will boil down to what do you want? Jeepz.com has one of the friendliest Jeep forums on the internet. For a DD I cant help but give the nudge to the 6 cyl personally. Shop Now. As a matter of fact, all AMC engines have the same belhousing bolt pattern. i think the two engines produce the roughly the same numbers w/ the 304 comin in a little higher.....the 285 produces its torque at an incredably (sp) low rpm around 1800... and i would think the 258 is lighter....and there are only 3 years you can get a 304 and a d300 t-case, and the t-176 is plenty strong, though it … how much are you willing to spend to get it...if you do the V8 I highly reccomend a new oil pump which is $300, Those who walk with wise men will be wise, the companion of fools shall be destroyed, ...if you do the V8 I highly reccomend a new oil pump which is $300, This is a no-brainer. Horsepower ratings BHP Before 1972 American automakers rated their engines in brake horsepower (bhp), frequently referred to as SAE gross horsepower, because it … The last two years of the 304 in the CJ were in '80-'81. Tax Sale Savings on Revolution Gear and Axle Gear Packages! This is a CJ site, all the ads are set for autos (some times others get through.) Top Rated Seller Top Rated Seller. I'd personally build the 258, and save a lot of effort to get the same end result. I just pulled out the 258 6cyl and installed an AMC 304 that I rebuilt. There's no replacement for displacement. The V8 is … I like the 258 in my cj5. Shop by category. I love my 304 hands down compared to the 258. Jeep will be a daily driver...we live in the mountains (hills to Arkansansans...mountains to a Texan. Refurbished. this is from a 1972 304. $172.22. Seems to give me a little more juice. MPG seems about the same to me. yeah or that, but i am a chevy guy on top of a jeep fan. Shop with confidence. Skip to main content. From 290, 304, 343, 360, 390, and 401. Summit Racing SUM-K8600 - Summit Racing® Classic Cam and Lifter Kits. Engines: Upgrades Factory Options General: The AMC 258 was introduced in 1971 in J-series pickups and Wagoneers and in … Shop by category ... TRW Engine Valve fit Jeep AMC 199 232 258 290 304 (V2605) 2Pcs. The 304 will give you a bit more top end if you do a lot of highway driving. After he drove my five a few times he was trying to con me into trading him for is 258.