Parts List
[Introduction] [Parts Selection] [Parts List] [Specifications] [Preparation] [Assembly] [Installation] [Results] [Updates] [FAQ's]Bottom end
Junkyard '00 Jeep 4.0 I6 short block (incomplete): 147USD
Reground AMC 258 crankshaft #3214723 & Clevite 77 rod bearings #CB-960P-20(6): 77USD from E-bay
Federal Mogul main bearings #FM7211M.030: 35USD
Crankshaft rear main seal #05018594AA: 7USD
Crankshaft pilot bearing #53009180AB: reused
Reconditioned AMC 258 connecting rods: 76USD from E-bay
ARP rod bolts (AMC 258) #112-6001: 35USD from Fast Engine Parts
Sealed Power 677P +0.020 pistons #STL-677P20: 90USD
Hastings +0.020 cast piston rings #667: 30USD
Clevite 77 camshaft bearings #SH-549S: 17USD
Crane camshaft CRN-753905 & lifters CRN-99278-12: 179USD from Summit Racing
Main bearing studs: stock '00 reused
Main bearing girdle & retaining nuts: stock '00 reused
Main bearing girdle spacer kit (14 hardened 5/16" steel washers): 1USD
Crankshaft sprocket #53020443 & timing chain #53020444: stock '00 reused
Camshaft sprocket #53020445: stock '94-'98 27USD
Camshaft sprocket bolt #83502890 & washer #J3173284: stock '92 free with block
Crank harmonic damper #33002920T: 29USD
Crank pulley spacer: free
Pioneer brass freeze plugs x7: 7USD
Oil pan: stock '92 free with block
Melling high volume oil pump #M167-HVS: 69USD from Summit Racing
Victor Reinz lower gasket set #CS-5713X: 29USD
Top end
Cylinder head (spare '92 DIY ported): effectively 293USD*
Valves: spare '92 reused*
Head bolts: stock '00 free with block
Crower chromemoly hardened pushrods #70158-12: 36USD
Mopar Performance valve springs #5249464, retainers #4452032, & locks #4529218: 153USD from The Moparts Connection
Yella Terra 1.6 ratio roller rocker arms #YT6627: 364USD
Valve cover: stock '92 free with block
Victor Reinz upper gasket set #HS-5713Z: 45USD
Miscellaneous
Distributor Lucas #53006150: stock '92 reused
Oil filler cap #53020555: 6USD
Robertshaw 180* thermostat #330-180: 10USD from Flowkooler
Mopar oil filter #5281090: 7USD
Champion RC12LYC spark plugs: 9USD
Mopar serpentine drivebelt #53010269: 35USD
Engine Shop Work
0.020" cylinder overbore & hone
Press in new cam bearings
Press pistons onto rods
Regrind valve seats
Clean, polish, & lap valves
Acid dip valve cover
Press freeze plugs into block
Cut crank pulley spacer
Parts cost: 1813USD
Engine shop cost: 118USD
TOTAL GROSS COST: 1931USD
Sale of old 4.0 engine: 543USD
TOTAL NET COST: 1388USD
*Cost of '95 junkyard head with valves that I bought, DIY ported, and bolted onto my old 4.0L engine last year (includes hot tank, milling of head surface, and Standard Abrasives head porting kit). I was left with my original '92 head and valves as spare parts. I ported this head and used it for the stroker build-up.
Total outlay was effectively $1388. It cost me $1931 to build a complete stroker long block from scratch and I recouped $543 by selling my spare old 4.0L long block. This engine began life as a low buck stroker but it now has a high performance valvetrain that's much more stable at high rpm than the factory combination.
The basic stroker kit (stroker crankshaft, rods, rod bolts, pistons, piston rings, and rod/main bearings) that I put together myself cost a mere 343USD. Speedomotive's kit costs 675USD (basic kit) plus 49USD to cut 1.0cm from the crank snout or 724USD total, so I've saved a whopping 381USD!
Block viewed from below. The '00 4.0 block has seven main bearings and uses a main bearing stud girdle to add rigidity and reduce NVH. The main bearing caps are bolted to the block with studs that have extensions onto which the girdle slides into place.
The girdle is secured with nuts that go onto the main cap stud extensions.
The pads on each side of the stroker crankshaft's no.2 and no.5 rod journals interfere with the girdle, so the girdle has to be elevated by using 5/16" hardened steel washers as spacers to provide the necessary clearance.
'99-'04 4.0 blocks have casting no. 53010449AA. The NVH stamp signifies that the block has the noise, vibration, and harshness fixes that Daimler-Chrysler introduced in '96.