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  1. #1
    Administrator Ninergrad's Avatar
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    408, 426 on the budget

    Ok fellas, so you think it is possible to put together a 408 or preferably 426 kit on a budget? We are not talking about entire engine, lets assume we already have a block, heads, cam and high volume oil pump. What is left? Lets keep it in a list form with all the parts needed and prices for them as well as cheapest place to get them.

    Then we can can make it into sticky here or toss it in the tech archives.
    -Davit.

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  2. #2
    Modfag Saleen4971's Avatar
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    Crank
    Rods
    Pistons
    Piston Rings
    Machinework

    the 426 is not boost friendly w/o custom pistons. i dont really have prices on that stuff, but i can try and find em later.
    Ross
    1998 Grand Cherokee 5.9 Limited
    MPP Headers - Thunderbolt Metallic Cat - 3" Mag catback - EBC Brakes w/ drilled Rotors - 4bbl M1 - Vortech 12psi - Built trans & 2900 stall - Ford 8.8 - Addco & Hellwig Sways - Poly Bushings - H&R Springs - Grabber UHP Tires - Alpine/Infinity Stereo - FX-R BiXenon Retrofit

  3. #3
    Administrator Ninergrad's Avatar
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    Has to be boost friendly, Do I need custom pushrods even though I just bought some 7.050 hardened?
    Yeah prices is the key, we are not counting the machine work just parts. Lets assume we already have a block that is ready to go.
    Plus what do you think is better 426 or 408 and why? Is 408 cheaper????
    -Davit.

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  4. #4
    Modfag Saleen4971's Avatar
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    if you coudl get a boost friendly 426 built, it would be epic - much more torque than a 408 (.125" longer stroke)
    Ross
    1998 Grand Cherokee 5.9 Limited
    MPP Headers - Thunderbolt Metallic Cat - 3" Mag catback - EBC Brakes w/ drilled Rotors - 4bbl M1 - Vortech 12psi - Built trans & 2900 stall - Ford 8.8 - Addco & Hellwig Sways - Poly Bushings - H&R Springs - Grabber UHP Tires - Alpine/Infinity Stereo - FX-R BiXenon Retrofit

  5. #5
    Administrator Ninergrad's Avatar
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    So what you are saying 426 is better for N/A build because of the high CR, but 408 is what you want for the SC build?
    -Davit.

    98 ZJ 5.9L Slate
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    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
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  6. #6
    Member 5.9_Racer's Avatar
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    well with 426, I would think N/A for sure... the walls are gonna be thinner and boost would potentially shred them.... right? N/A would just allow it to last longer.

    How many times you feel like rebuilding the engine because of boost or NOS failures?
    Rarely Active, in case you are looking for me on here.....
    Past: 92 MJ --> 89 XJ --> 99 WJ --> 92 YJ [RIP] --> 98 ZJ [RIP] --> 05 LJ --> 98 ZJ
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    Click here for my build thread....Project Fireheadman 6.7L SuperCharged and Stroked

  7. #7
    Administrator Ninergrad's Avatar
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    Quote Originally Posted by 5.9_Racer View Post
    well with 426, I would think N/A for sure... the walls are gonna be thinner and boost would potentially shred them.... right? N/A would just allow it to last longer.

    How many times you feel like rebuilding the engine because of boost or NOS failures?
    NON,
    WE still haven't figured the cost. let's cear the goal.
    Lets say we are setup to build a 408 that can handle 14lbs boost all day everyday,
    Parts:
    Crank
    Forged pistons
    Forged Rods
    We can reuse the rods that I already have since the are foged.

    What other weak points are we missing?

    What parts are we missing?

    And what is the price we are looking at just in parts???
    -Davit.

    98 ZJ 5.9L Slate
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    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
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  8. #8
    Forum CONDUCTOR Man Z88Z's Avatar
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    dumbness here but, are the various stroker kits based on one engine over the other - 5.2 vs 5.9 - or is it based on boring whichever motor you have to the bore you want?

    There are other stroker kits out there right. like 392 etc or am I confusing that with the new gen hemi stroker kits?

  9. #9
    Modfag Saleen4971's Avatar
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    the 408 and 426 are both based on a 4.030" bore. the stroke is different (4" vs. 4.125" IIRC)
    Ross
    1998 Grand Cherokee 5.9 Limited
    MPP Headers - Thunderbolt Metallic Cat - 3" Mag catback - EBC Brakes w/ drilled Rotors - 4bbl M1 - Vortech 12psi - Built trans & 2900 stall - Ford 8.8 - Addco & Hellwig Sways - Poly Bushings - H&R Springs - Grabber UHP Tires - Alpine/Infinity Stereo - FX-R BiXenon Retrofit

  10. #10
    Member WiCKeD's Avatar
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    What makes the 426 less boost friendly, if the bore is the same? The Hughes' kit uses a forged crank so I would think that would help: http://www.hughesengines.com/Index/p...z&partid=23812 Might want to also ask them for advice.

    Jebus, davit is going all the way…!
    Last edited by WiCKeD; 02-19-2009 at 07:03 AM.
    '98 Jeep Grand Cherokee 5.9er
    Southeast RT Blower Built 360 & CNC Ported 2.02 R/T Heads / COMP Cams Custom Cam / Crower Rockers / Edelbrock Headers / P&P Kegger / MSaine Valve Body / 247|249 Hybrid Transfer Case / Kolak Exhaust / Mopar Vulcanized Rubber Cupholder

  11. #11
    Modfag Saleen4971's Avatar
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    Compression Ratio with Step Dish Piston (figured with a .039"/9cc head gasket):

    58cc head = 10.39:1
    65cc head = 9.74:1


    im sure they coudl give you some different pistons. that 426 makes some CRAZY power - IIRC hughes got 561hp@6100RPM out of it!!!! using eddy magnum heads!
    Last edited by Saleen4971; 02-19-2009 at 12:04 PM.
    Ross
    1998 Grand Cherokee 5.9 Limited
    MPP Headers - Thunderbolt Metallic Cat - 3" Mag catback - EBC Brakes w/ drilled Rotors - 4bbl M1 - Vortech 12psi - Built trans & 2900 stall - Ford 8.8 - Addco & Hellwig Sways - Poly Bushings - H&R Springs - Grabber UHP Tires - Alpine/Infinity Stereo - FX-R BiXenon Retrofit

  12. #12
    Administrator Ninergrad's Avatar
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    I don't know, Wicked this all will be done after I "accidentally" blow the motor.

    So I am trying to decide, go all forged 360, all mildly forged 408, or just go 426... i think 426 is a bit much. 408 will be good.
    -Davit.

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  13. #13
    aero brick
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    im gonna go 426 buut the ohio crank kit not hughes
    a.k.a the aerodynamic brick. dark slate niner gun metal ultrastars, aem intake, edelbrock headers waiting install.

    93/94/95 5.2l scrapped
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  14. #14
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    this is the thread i made when i was on jeepforum when i was planning on a 408 but when gas prices went up to $4.00/gallon i had to scratch that idea but here's the link
    http://www.jeepforum.com/forum/showthread.php?t=591545
    1994 JGC limited white with blacked out cladding stripes, custom dual exhaust, e-bay k&n, 4in. lift in the front 2.5in in the rear, 31in nitto dune grapplers, custom cowl induction hood, taurus e-fan conversion, np231 swap w/bezel, rhino lined rockers, a few other goodies.....

  15. #15
    Administrator Ninergrad's Avatar
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    Thanks for the link, I am not worrying too much about the PCM, have the sct tuner to keep me good'n'tuned. I will need a list of parts to use. Is crank needs to be balance after i buy it, or does it already come balanced?
    My heads should provide more than enough flow for 408.
    SO questions still remain people:
    1) Pistons - Brand, what size, part number, forged etc!
    2) Connecting Rods - same as above
    3) i think I can find crank from joe's links - anyone has any thoughts about this one, come fellas wake up
    4) Block will need new cam bearings I imagine? Yes/No?

    What else do I need to build a stroker, besides machine work?????
    -Davit.

    98 ZJ 5.9L Slate
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    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
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  16. #16
    Black Storm GrandHokie98's Avatar
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    Quote Originally Posted by darknine View Post
    im gonna go 426 buut the ohio crank kit not hughes
    Are you going to supercharge? nitrous?

    i e-mailed Hughes to find out about the 426 supercharging and NOS...here's the response...

    Dear Hughes Engines,
    I am looking at your 426 stroker kit for a 5.9L 1998 Jeep Grand Cherokee. I have a few simple questions.

    1. Using this kit, would the use of nitrous oxide be dangerous to the engine due to the high compression ratio?

    We would not recommend anything over 100 Shot of NOS

    2. Using this kit, would supercharging be dangerous for the same reason?

    YES, Supercharging is not at all recommended for this kit

    The best bet would be a 408 kit with custom pistons, custom blower pistons are not available for the 426 kit.
    '98 ZJ 5.9L
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  17. #17
    aero brick
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    a.k.a the aerodynamic brick. dark slate niner gun metal ultrastars, aem intake, edelbrock headers waiting install.

    93/94/95 5.2l scrapped
    slate 5.9l sold
    platinum 5.9l crushed
    slate 5.9l fire totaled
    platinum 5.9l scrapped
    slate 5.9l: sale pending
    platinum 5.9l: sold

    slate 5.9l: stock 80,000 miles

  18. #18
    Administrator Ninergrad's Avatar
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    Good Job guys, I am eventualy gonna pull out all the info from this thread to give people an idea on parts/price that goes into 408 and 426
    -Davit.

    98 ZJ 5.9L Slate
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    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
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  19. #19
    Banned Wrinklechops's Avatar
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    Wonder if a 426'd motor in our Jeeps would be just as powerful as a supercharged 360 or 408...

  20. #20
    Member NoTime's Avatar
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    One of the major cost difference is the cast or the forged Crank.......

    You defenitly want to get your pistons, crank assembly balanced and also figure out if your going to go internal or external balance ( different flex plate and different crank balancer )
    1998 ZJ 5.9 Platinum - 408 SC Sleeper ( 7.49 / 11.? )
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  21. #21
    Modfag Saleen4971's Avatar
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    Quote Originally Posted by NoTime View Post
    One of the major cost difference is the cast or the forged Crank.......

    You defenitly want to get your pistons, crank assembly balanced and also figure out if your going to go internal or external balance ( different flex plate and different crank balancer )
    +1 - the cheapest forged crank is 2x as much as a cast crank

    eagle SIR forged i beam rods are a little under $300 for the set - or you coudl get some 1300hp capable H beams from eagle for 700!
    Ross
    1998 Grand Cherokee 5.9 Limited
    MPP Headers - Thunderbolt Metallic Cat - 3" Mag catback - EBC Brakes w/ drilled Rotors - 4bbl M1 - Vortech 12psi - Built trans & 2900 stall - Ford 8.8 - Addco & Hellwig Sways - Poly Bushings - H&R Springs - Grabber UHP Tires - Alpine/Infinity Stereo - FX-R BiXenon Retrofit

  22. #22
    Last Shadow RINGWRAITH's Avatar
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    Quote Originally Posted by 5.9_Racer View Post
    well with 426, I would think N/A for sure... the walls are gonna be thinner and boost would potentially shred them.... right? N/A would just allow it to last longer.

    How many times you feel like rebuilding the engine because of boost or NOS failures?

    Walls are just as thick as a 408....but power in the 600++ range will walk the block.....you need 4 bolt main caps, girdle and lifter valley brace....

    Quote Originally Posted by WiCKeD View Post
    What makes the 426 less boost friendly, if the bore is the same? The Hughes' kit uses a forged crank so I would think that would help: http://www.hughesengines.com/Index/p...z&partid=23812 Might want to also ask them for advice.

    Jebus, davit is going all the way…!
    Just the comp. on the pistons that are avail.
    add to the cost of the kits 2400, another 900 for lower comp. custom pistons and you are there.........

    Smart build would be less bore, say .10 only, then custom pistons cuz there gonna be custom anyway.......
    Captain of the Nine

  23. #23
    Last Shadow RINGWRAITH's Avatar
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    PS. custom 1 7/8 headers too............
    Captain of the Nine

  24. #24
    Last Shadow RINGWRAITH's Avatar
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    PSS. if yer not going to use the pistons, then do a 440cid, custom pistons and rods be the same.........price is cheaper...give or take.....
    Captain of the Nine

  25. #25
    Member scjeep4.7HO's Avatar
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    get an R3 block, pistons can be made and runs whatever the FAWK you want....... Period.
    Big ASS supercharged 4.7L HO, cammed, Custom Made Supercharger COG drive system, 72mm F&B throttle body, ROSS ceramic coated pistons, Billet H beam rods, 1st set of race prepped big valves heads W/ behive springs, Custom one off sheet metal intake, Modified Edelbrock Mustang intake elbow, ATI super dampner, 3,000 Edge racing billet stall converter, meth injected, SCT tuned, 39# injectors, 2 bar map, Turbo Smart Race Port BOV, 180* T stat, True dual exhuast, Built tranny W/ deep trans pan, built transfer case, 275 60 R17 rubber.

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