Jeep - AMC 4.0L and 4.2L Stroker Enthusiasts
https://www.jeepstrokers.com/forum/
January 14 1997 is when the block was made by that build date.Bodo wrote:build date is 701mx14
Cylinder Block Component Combinations On
1987-95 Chrysler/Jeep 4.0L Engines
The AERA Technical Committee offers the following information on cylinder block component combinations for 1987-95 Chrysler/Jeep 4.0L engines. This engine has used two block, heads and crankshaft combinations since 1987. Intermixing of those components may not be possible, depending upon the transmission used. Two similar connecting rods and only one camshaft has been used.
Complete block assemblies should be made up into three different groups:
1) 1987-90 - original head, block and crankshaft.
2) 1991 - redesigned head, block and original crankshaft.
3) 1992-95 - redesigned head, block and crankshaft.
The cylinder block casting numbers 2665 and 5535 are used in engines built from 1987-90. The block casting number 8405 is for 1991-95 engines and has two additional mounting bracket bolt holes. The 8405 block casting also has the main bearing tang receiver groove located in the center area of the housing bore. Previous blocks had that groove located at the ends of the housing bore. Consequently, main bearing sets were also modified for 1991 and later blocks.
The original crankshaft casting number 3003453 is used for 1987-91 engines and it has a rear pilot hole drilled approximately .550" or .850" deep. If that crankshaft is used in a standard transmission application, it requires pilot bearing Part #33004041. Beginning in 1992, crankshaft casting number 53020767 was produced with a rear pilot hole depth of approximately .850". That crankshaft, when used in a standard transmission application requires a sleeve & bearing assembly Part #53009180. The pilot bearing is also available
individually with Part #53009181.
The original cylinder head casting number 2686 is used for 1987-90 engines. Head casting numbers 7119 and 7220 are used for engines built for 1991-95 applications. The connecting rod casting numbers are 351 & 554, they're interchangeable as long as total weights are similar. This engine has used only one camshaft casting number, 89330-02983.
Their has been interist in using the later model engines ( Blocks) in older vehicles. Can you find out what the differences are on the 98-06 blocks? I know on some of the engines, the water pump bolt pattern changed, so the older accessory drives will not work. I think the motor mount mounting holes move location as well. Any info you could pass along ( like which block went in which vehicle XJ,WJ, YJ etc) would be helpfull to the rest of us.Bodo wrote:I went back to the computer at work. They have PRO-SIS on the balancer and the machinist said I could have free reign on it!
So here is what I was able to glean from it.
Block Castings:
87-88 53002665 53005535 53008405 8933002665
89-90 53002665 53005535 8933002665 893300266
91-97 53008405 53010341 53020569 5302569
98-06 53010327-AB 53010328-AB 53010341 53010449 53010449-AA 53020514 53020515 53020569
