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Swap 2001 jeep GC 4.7l for chevy 350...

Discussion in 'Cherokee' started by M2Kgriff, Jan 26, 2017.

  1. Jan 26, 2017 at 9:32 PM
    #1
    M2Kgriff

    M2Kgriff [OP] New Member

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    Was in the process of replacing 4.7l with a new one and came across a few scattered threads of swapping for GM's 5.3.... I've got a 350 with all components other than a trans layin around. Any input as to the possibility of doing this would be greatly appreciated.
     
  2. Jan 27, 2017 at 6:10 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Welcome!
     
  3. Jan 27, 2017 at 11:54 AM
    #3
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    Hi Joe!! Welcome to the site.

    Hopefully, Offgrid will jump in here... He seems to have the best handle on this kind of project.
     
  4. Jan 27, 2017 at 12:05 PM
    #4
    M2Kgriff

    M2Kgriff [OP] New Member

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    Thank you any info will help ... currently just weighing options... not completely decided yet. Just looking at possibilities.
     
  5. Jan 27, 2017 at 2:28 PM
    #5
    OFFGRID

    OFFGRID Well-Known Member

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    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    I have never done a 5.3 swap, but a good place to start is https://www.novak-adapt.com/knowledge/engines/swap-guides/chevy-buick-gm/ . There is a ton of info on Novak's website. I will say that the Powertech (also known as the Magnum) engines were great small V8s. A 287 displacement making 300 ft/lbs of torque is impressive and on par for the 5.3L GM. I believe that with set of cams and some minor intake and exhaust mods you can have 270hp/400ft torque. (Crazy) It was also voted as one of the best innovative motors for its time. I tend to like the pre-1987 350s and then I like to convert it to fuel injected TBI, because the only sensors are for O2 and heat. The only issue here is that most states will not let you retrograde a vehicle to an older motor. It won't pass inspection. My opinion is that the 5.3 is not a viable swap for you. You wouldn't really see any gains and would not be worth the expense.
     
    C2T likes this.
  6. Jan 27, 2017 at 2:31 PM
    #6
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    SEE....now you know why we were waiting to see what Peter (OFFGRID) had to say. :)
     
  7. Jan 27, 2017 at 2:32 PM
    #7
    OFFGRID

    OFFGRID Well-Known Member

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    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
  8. Jan 27, 2017 at 5:38 PM
    #8
    M2Kgriff

    M2Kgriff [OP] New Member

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    1485566569619515276060.jpg Appreciate it . At this point im just taking existing appart to find out if worth rebuilding or just purchasing a new motor ... would all depends on condition of the block tho ... also I'm in michigan restrictions I'm sure exist but no inspection required to prove any misconduct.
     
  9. Mar 12, 2017 at 5:48 PM
    #9
    Nickols33

    Nickols33 Member

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    92 xj 4.0 l6 stock pos
    rattle canned it primer grey(black rims) e3 spark plugs
    i have a 355 mild cam bored 40 over about 1000(one thousand) miles on it and a matching 700r4 4x4 transmission fresh rebuild less than 50(fifty) miles on it want to sell it to build stroker and fix transmission i rebuilt the tranny and rolled the truck the next day. im trying to get rid of them as a set. if youre interested id really like to get rid of them.
     
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