Originally Posted by Hendrix
Still not sold on the longevity of a stroker. If this was a trail rig only... Maybe.
But, I want to be able to put a 15-20 K a year on this rig with little problems at all.
High compression or getting crazy(like what I'm building) is the only reason I can say that you couldn't make one just as reliable as a 4.0, and there are several low compression/low dollar engine recipes.
4.6L "poor man's" stroker
Jeep 4.2L 3.895" stroke crank
Jeep 4.2L 5.875" rods
Sealed Power 677CP*+0.020" bore pistons
Stock 4.0 camshaft
Ported HO 1.91"/1.50" cylinder head
Mopar/Victor 0.043" head gasket
0.088" quench height
Ford 24lb/hr injectors with stock 39psi FPR for '87-'95 engines,*Accel 24lb/hr*injectors with stock 49psi FPR for '96 and later engines
248hp @ 4900rpm, 306lbft @ 3250rpm ('87-'95 camshaft)
245hp @ 4800rpm, 315lbft @ 3000rpm ('96-'06 camshaft)
NEW: Modified "poor man's" stroker
Same as above except Jeep 4.0L 6.125" rods, Keith Black UEM-IC944-020 forged pistons, and 0.070" quench height. This is a great stroker build for a mild supercharger/turbo application with up to 6psi of boost. The 4.0L connecting rod/IC944 piston combination offers 155g less reciprocating mass than the 4.2L rod/677P piston combination (1275g v 1430g), thereby giving this engine a potentially higher rpm capability than the traditional "poor man's" stroker.*