International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Discussion

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-02-2014, 10:47 AM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
4.8L in a 68

Is this enough for a 4k gvw? I know there is no replacement for displacement. This vehicle will tow small trailer and family once a year playing Griswald cross country. The rest of the year it is commute. What do you think is the 4.8 capable? I mean I wont be pulling a 26ft mega trailer just a 16ft shasta or similar.
Reply With Quote
  #2  
Old 02-02-2014, 12:04 PM
Mike D's Avatar
Mike D Mike D is offline
350 Buick
 
Join Date: Jul 29, 2002
Location: Divorce is hell
Posts: 1,230
Or a 41' Vagabond (ps it's 3K-lbs) ...

lol -- get this, it was manufactured in 1950 ... and was pulled by many Wagoneer/ford/Studebaker etc .... -- harry right??
__________________
64 Wagoneer 283 SBC
50 truck
63 J-200 Truck -- free

Please, if you believe in the power of prayer, God and Jesus Christ... I beg you add my relationship with Heather Boyd to be reconciled to a new, stronger than ever, wonderful marriage ... to your prayer list and remember us daily.


Addendum:
And now that im getting Divorced .. i want to work on it , but no one else does -- ^ -- Heather, please leave your affair with Josh Smith and come back to the father of your children
Reply With Quote
  #3  
Old 02-02-2014, 12:32 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
Cherokee Outlaw
 
Join Date: Jan 10, 2006
Location: Oak Harbor, WA
Posts: 7,283
The 4.8 will pull plenty...what I would be more worried about is upgrading your brakes and suspension.
__________________
-Jonny B.
1979 Cherokee Golden Eagle - UNDER CONSTRUCTION
7" Alcan springs, BJ's HD shackles - 35x12.5x15 BFG Mud Terrains
AMC 401 - Pro-FLo 4 FI
NV4500/NWF BB/NP205 - Triple Stick'd
F D44 - 4.10, Eaton E-Locker
R M23 - 4.10, Detroit Locker

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
Reply With Quote
  #4  
Old 02-02-2014, 01:42 PM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
thanks I take it 4l60e will give me better mpg than the th400 and should be better all around?
Reply With Quote
  #5  
Old 02-02-2014, 02:06 PM
mdcptman's Avatar
mdcptman mdcptman is offline
Jeep Therapist
 
Join Date: Apr 09, 2010
Location: New Orleans, LA.
Posts: 1,287
I know I'm gonna get slammed by some, but......

Looking at the torque and horsepower numbers the 4.8 looks better than any of the stock jeep drivetrains. Add a significant mileage increase from the overdrive, and the improved reliability and drivability of the GM LS series engines, not to mention parts availability, there is no downside to the swap. Except for blood sweat tears and money.
__________________
Member FSJ Prissy Restoration Association
88 Grand Wagoneer
360/727/NP208/dana 3.31s
Edelbrock 2131
Holley 600
Hydroboost
Hedman headers
Dual exhaust
MSD6A, TFI
Digital Gauges
Rusty's 2" Lift
31x10.5 15LT15s
Quote From Friend's Mom:
"You don't rely on that vehicle do you?"
Reply With Quote
  #6  
Old 02-02-2014, 02:38 PM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
I have no shortage of any of those variables save money. I have ordered the engine from BD turn key. Hope I can find a transmission w/in my budget. I'll buy the adapter when I can save enough. Wish I could use the stock adapter for a 4l60e. Now I just need the motor Gods to keep this 50 psi compression motor putting and gross polluting for 5 more months.
Reply With Quote
  #7  
Old 02-02-2014, 10:07 PM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
Vagabond awesome. I would not do anything but park that. I could use a littleore input on this subject because the owner st bd turnkey is telling I will be highly disdapointed with the 4.8 but I have posdative input here. I cannot afford to buy amd find out for myself I could use some help from som wogoneer owners please. Thanks a bunch
Reply With Quote
  #8  
Old 02-02-2014, 11:59 PM
Carnuck's Avatar
Carnuck Carnuck is offline
 
Join Date: Feb 12, 2011
Location: Gold Bar, WA
Posts: 6,474
Quote:
Originally Posted by mdcptman
Looking at the torque and horsepower numbers the 4.8 looks better than any of the stock jeep drivetrains. Add a significant mileage increase from the overdrive, and the improved reliability and drivability of the GM LS series engines, not to mention parts availability, there is no downside to the swap. Except for blood sweat tears and money.

And the ability to do the wiring!
__________________
Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental.
Reply With Quote
  #9  
Old 02-03-2014, 04:55 AM
mdcptman's Avatar
mdcptman mdcptman is offline
Jeep Therapist
 
Join Date: Apr 09, 2010
Location: New Orleans, LA.
Posts: 1,287
Quote:
Originally Posted by mdcptman
Looking at the torque and horsepower numbers the 4.8 looks better than any of the stock jeep drivetrains. Add a significant mileage increase from the overdrive, and the improved reliability and drivability of the GM LS series engines, not to mention parts availability, there is no downside to the swap. Except for blood sweat tears and money.

Ok...juat to clarify, I think the 4.8 woild be a good motor to swap in. If you can get a significantly better deal on one, then its worth it. But given a choice, I'd rather the 5.3. I have one in my tahoe, and it can pull anything, at 80, and still get 18 mpg. At 185000 miles.
__________________
Member FSJ Prissy Restoration Association
88 Grand Wagoneer
360/727/NP208/dana 3.31s
Edelbrock 2131
Holley 600
Hydroboost
Hedman headers
Dual exhaust
MSD6A, TFI
Digital Gauges
Rusty's 2" Lift
31x10.5 15LT15s
Quote From Friend's Mom:
"You don't rely on that vehicle do you?"
Reply With Quote
  #10  
Old 02-03-2014, 12:57 PM
jdaniel83's Avatar
jdaniel83 jdaniel83 is offline
Master Mechanic
 
Join Date: Sep 26, 2008
Location: Texas
Posts: 928
I think the 4.8 would be fine. Depending on what configuration the motor is you're looking at around 270-295 HP and 285-300 FT/LBS of torque which is more than adaquate to move around an FSJ. Yes the 5.3 is more powerful but like mdcptman said if you can get a good deal on a 4.8 I would go that route. Biggest difference you would notice between the 4.8 and 5.3 is when you would be towing because of the torque difference.
__________________
'89 GW; 4" Susp Lift on 32" Wild Country MTX; 360, HEI, Edelbrock Intake, Melling MTA-1 Cam, Summit 600 carb, 3.73 Gears

'70 Wagoneer; stock Buick Dauntless 350, TH400; 3.73 stock gears

'83 Wagoneer Limited; stock 360, 727, 3.31 gears.
Reply With Quote
  #11  
Old 02-10-2014, 12:32 PM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
well a fool and his money as they say. I bought what I was told was a 5.3 and it turns out to be a 4.8. I wonder what other truths may have been stretched.I doubt the calls will be returned. should have gone bdturnkey.

Last edited by miltos68 : 02-10-2014 at 12:35 PM.
Reply With Quote
  #12  
Old 02-10-2014, 01:24 PM
babywag's Avatar
babywag babywag is offline
out of order
 
Join Date: Jun 08, 2005
Location: Land of froot loops and cukcoo-nuts, CA
Posts: 9,871
It's really hard to tell the difference w/o looking @ a piston.
Not making excuses for the seller, but they might have thought it was a 5.3

I bought a 5.3 a while ago, and the seller neglected to mention a few things.
Like the fact that he never changed his oil?? Lotsa sludge inside.
And the broken water pump bolts snapped off in the block.

Still got a good deal IMHO, provided it runs?
__________________
Tony
Reply With Quote
  #13  
Old 02-10-2014, 03:09 PM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
I am going to run it anyway since I ended up with it. I did not realize the the mark is on the head gasket tab pass side (4.8 or 5.3) . I just worry about torque. the 350 dauntless had higher torque rating than this small block. I do not want it to be disappointing come tow time. Just don't know?!
Reply With Quote
  #14  
Old 02-10-2014, 11:44 PM
mdcptman's Avatar
mdcptman mdcptman is offline
Jeep Therapist
 
Join Date: Apr 09, 2010
Location: New Orleans, LA.
Posts: 1,287
I think you will be pleasantly suprised. Its a good motor, and there are loads of aftermarket stuff available to help u get more power if needed.
__________________
Member FSJ Prissy Restoration Association
88 Grand Wagoneer
360/727/NP208/dana 3.31s
Edelbrock 2131
Holley 600
Hydroboost
Hedman headers
Dual exhaust
MSD6A, TFI
Digital Gauges
Rusty's 2" Lift
31x10.5 15LT15s
Quote From Friend's Mom:
"You don't rely on that vehicle do you?"
Reply With Quote
  #15  
Old 02-11-2014, 12:21 AM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
i have a 68 and do not require smog checks. I do not have cats for this motor and wonder if it would be ok to run without them. Too little back pressure? Beneficial? dont know cant find too much info on this aspect of these motors.anyone have anymore knowledge on this.by the way thanks for the praise on this motor I fear I might be struggling to tow.Granted it will not be more than a 4k lb travel trailer but feel that the GVW is 2k lbs less than the vehicles tey come in now it might work out ok. I don't want to be struggling up over the rockies with the family at 4500rpm at 45mph.
Reply With Quote
  #16  
Old 02-11-2014, 06:42 PM
Carnuck's Avatar
Carnuck Carnuck is offline
 
Join Date: Feb 12, 2011
Location: Gold Bar, WA
Posts: 6,474
As long as you have mufflers it will be fine.
__________________
Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental.
Reply With Quote
  #17  
Old 02-11-2014, 09:01 PM
Ghinmi's Avatar
Ghinmi Ghinmi is offline
Super Moderator
 
Join Date: Jul 02, 2004
Location: Middleville, Michigan
Posts: 2,147
Quote:
Originally Posted by miltos68
I do not have cats for this motor and wonder if it would be ok to run without them. Too little back pressure?

There is no such thing as too little back pressure.
__________________
Yep, I know my PM box is full. Email me instead.

1983 Cherokee WT - IFS, trailing arm rear, full cage, Hemi, 6 speed, turbocharged - Autocross project
http://ifsja.org/forums/vb/showthread.php?t=127321
Reply With Quote
  #18  
Old 02-12-2014, 01:33 AM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
turns out as well as not being a 5.3 it is a 1999 and not a 2006. man I am a sucker!Boy I used to pride myself on character judgment. I must re-think my attributes. the 1999 4.8 is 35 hp lower than the 2006. I do not know how to tell the wife I wasted our savings on something that just wont work for what we need!!! 255hp and asthmatic torque numbers will not do. man I am lost on hoe to make this wrong a right. to hell with people trying to get over on other folks.
Reply With Quote
  #19  
Old 02-12-2014, 05:50 AM
mdcptman's Avatar
mdcptman mdcptman is offline
Jeep Therapist
 
Join Date: Apr 09, 2010
Location: New Orleans, LA.
Posts: 1,287
Awe man! I hate that! I dont know how some people sleep at night!. There are lots of aftermarket parts to boost hp. But maybe u should sell it, recoup some of your money, and look for what u want. Is there no way to go back the seller? Hes not returning calls?
__________________
Member FSJ Prissy Restoration Association
88 Grand Wagoneer
360/727/NP208/dana 3.31s
Edelbrock 2131
Holley 600
Hydroboost
Hedman headers
Dual exhaust
MSD6A, TFI
Digital Gauges
Rusty's 2" Lift
31x10.5 15LT15s
Quote From Friend's Mom:
"You don't rely on that vehicle do you?"
Reply With Quote
  #20  
Old 02-12-2014, 09:47 AM
miltos68's Avatar
miltos68 miltos68 is offline
Member
 
Join Date: Jan 17, 2014
Location: Elk Grove CA
Posts: 194
He returned my call and apologized said he did not know.Refund was out of the question though stating that it was my responsibility to know what I was buying.There is some truth to that but false advertisement is just that.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
GM 4.8L Vortec into Jeep CJ10 (GW frame) DrJekl General FSJ Tech 12 07-31-2009 04:03 PM


All times are GMT -6. The time now is 09:00 AM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
corner corner