jimoshel Posted May 29, 2014 Share Posted May 29, 2014 At one time Google was a very useful app for finding things. Due to spam that is no longer the case. Just wasted an hour searching for the following info. What year is a 2.5 Jeep block casting No 3239443, stamped No 406U18? Anybody know? :dunno: :???: Link to comment Share on other sites More sharing options...
88ComancheMitch Posted May 29, 2014 Share Posted May 29, 2014 http://street2mud.com/webfiles/AMC%20Engine%20codes.pdf I think this is what you're looking for. About to head back out to work on the truck, stopped for a snack... Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 30, 2014 Share Posted May 30, 2014 Sure the casting number isn't 3239448? That number shows up in the below, 1983-88: Jeep Block Casting NumbersSource page for the data in this tableMAKE AND YEARC.I.D. LITRE BORE CYL. DESCRIPTIONBLOCK CASTING NUMBERHEAD CASTING NUMBERCRANK CASTING NUMBERAMC1983-88150 2.5 3.875 L-4 Eagle, 7/16"323944832448933239611AMC1988-71150 2.5 3.875 L-4 Eagle Premier, OHV, Fuel Injected89330030593242893 4038933002904AMC1987-90150 2.5 3.875 L-4 Fuel Inj., 2.06" Crank Neck, 7/16" Head Bolts, Wrangler89330042004088933002904AMC1986-90150 2.5 3.875 L-4 Carb., 1/2" Head Bolts, 2.06" Crank Neck, Wrangler53005532.8933002904AMC1991-92150 2.5 3.875 L-4 Fuel Injected, 7/16" Head Bolts, Wrangler630084031178933002904AMC1970-72232 3.8 3.75 L-6 W/Rocker Shaft, Spec. Flat Back or Flanged Style Crank319996232186183189886317071732110403172216317221831889473204904AMC1972-74232 3.8 3.75 L-6 W/Rocker Shaft, Spec. Flat Back or Flanged Style Crank321386732186183222380371071731898863211040321380932244903214722AMC1975-79232 3.8 3.75 L-63224098322744532272583241722AMC1987-90241 4.0 3.875 L-653005535893300266526863003453AMC1991-93241 4.0 3.875 L-65300840571203003453AMC1970-72258 4.2 3.75 L-6 W/Rocker Shaft, Spec. Flat Back or Flanged Style Crank31999623211040317071731898863199798RD67703AMC1970-72258 4.2 3.75 L-6 W/Rocker Shaft321861832223803213867321104031707173214723AMC1975-79258 4.2 3.75 L-6 Spec. Location of Temp. Send. Unit, 1/2" Head Bolts3227445322409832272583214723AMC1980258 4.2 3.75 L-6 Temp. Send. Unit at Top Rear of Head323507732272583214723AMC1981-85258 4.2 3.75 L-6 7/16" Head Bolts32354443933000322448032416563235477AMC1986258 4.2 3.75 L-6 1/2" Head Bolts323544439330023235477AMC1987-89258 4.2 3.75 L-6 2.06" Crank Neck, Spec. if Alum. or Plastic Valve Cover, 1/2" Head Bolts323544436613727AMC1970-79304 5.0 3.75 V-83195527321299032180863233324RD51261448723731952923214724AMC1970-78360 5.9 4.08 V-8 Spec. Stud Type or Bolt Down Rocker Cyl. Heads. Must Have Head Cast #3195528319629132205023231475321609032199933233344RD512614487237319529232147243214754AMC1971-76401 6.6 4.165 V-8 Spec. Stud Type or Bolt Down Rocker Cyl. Heads. Must Have Head Cast #31989513196291321999332160903220502323147531900793196921321472532204113199842 The stamped date mfg. decoder is also in this link: http://www.jeepforum.com/forum/f8/identify-your-engine-1383352/ Link to comment Share on other sites More sharing options...
jimoshel Posted May 30, 2014 Author Share Posted May 30, 2014 Put on my shoes, grabbed a flashlight , went out and checked. It was, is, an 8. TNX Don Link to comment Share on other sites More sharing options...
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