96 inches with flipped stock springs and moved 1 inch to the last hole on the spring perch f&r. sitting on 38.5 baja claws.
Whats your FJ40 wheelbase?
- Thread starter Okiyota
- Start date
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103" on 37's 22ish to the belly
hey 76lcforty what kind of rear spring are you using?
I'm currently in the middle of vortec, 4l60e, 3spd tcase conversion in a 68' fj40, I have flipped the front springs and I will link the rear. That should give me 109" the best I can figure. Any thoughts.
Rears are Cherokees, fronts are the top 2 leaves from an 80 mini truck mixed with lower leaves out of a wagoneer. Sits dead on 103 without stretching the frame.
107
My work in progress:
The final wheelbase and ride height aren't completely fixed yet. It looks like it's going to want to sit at about a 116" wheelbase with about 26" at the belly. It's on 4 linked full width 1-tons (HP D60 front, D70U rear) with full hydro steering, and 42" IROKs. The track width is a bit on the wide side at 88". Approach and departure angles are both full 90s.
The final wheelbase and ride height aren't completely fixed yet. It looks like it's going to want to sit at about a 116" wheelbase with about 26" at the belly. It's on 4 linked full width 1-tons (HP D60 front, D70U rear) with full hydro steering, and 42" IROKs. The track width is a bit on the wide side at 88". Approach and departure angles are both full 90s.
Wile E Coyote
Out in the streets, they call it murder!
Ah, BellyDoc...I spend so little time over on the PBB, but I have followed your build thread over there. It seems I'm due for another update, as it's been a few months. That pig seems to have at least a mile of weld in it, hehe.
That's not even counting the welds that I did, redid, and then chopped off!
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I also lurk, nice work.
Rob
Rob
I used to think 116" was ridiculously long....anymore, it seems to be a nice wheelbase and there are some sweet rigs coming out in that range.
nice lookin build!
Not a 40, but 111". Works very well with dual transfer cases and an auto trans.
hey...just wondering, everybody who is running these longer wheel bases how much difference do you notice in your turning radious and also getting high centered? im thinking of stretching my WB to about 100" in my wheeling truck. is this going to have a huge impact on my turning and getting high centered? will be stock height on 35's
Im JUST kind of getting into this 40 side of cruisers, and up until NOW, I had thought I had a pretty good grasp of what was involved in "stretching" the wheel base. However, Im finding that it seems that there is a bit more involved.
What I have in my garage that I just picked up is a 76 FJ40 with 4 in lift springs (relatively new). Now, Im planning to drop a 5.3 vortec with a 4L60E trans, a NP 203 doubler and Im HOPING to run a 19 spline split case behind that and run 35-37 in tires.
Mace had done a calc for me and said that the WB would need to be 100 in or BETTER in order to have a decent rear shaft lenght (18 in or better).
Now, you guyz are taking springs for 45's, 55's 62's and lifted 40 springs...My question is WHY? Im not trying to be a PITA, Im just confused as to what makes the differenc and what I would need to make the BEST set up for my future project. I also have my 62 springs that I could use as well with AAL's in the packs.
So, the basic jist is...flip the springs around, and set the center pins back or forward on the perches to gain the stretch.
I know this is remedial for you guyz, but Im just getting my learn on.
Ill be using my 62 axels for this project as well if that helps.
thanks for the info.
Chicago
What I have in my garage that I just picked up is a 76 FJ40 with 4 in lift springs (relatively new). Now, Im planning to drop a 5.3 vortec with a 4L60E trans, a NP 203 doubler and Im HOPING to run a 19 spline split case behind that and run 35-37 in tires.
Mace had done a calc for me and said that the WB would need to be 100 in or BETTER in order to have a decent rear shaft lenght (18 in or better).
Now, you guyz are taking springs for 45's, 55's 62's and lifted 40 springs...My question is WHY? Im not trying to be a PITA, Im just confused as to what makes the differenc and what I would need to make the BEST set up for my future project. I also have my 62 springs that I could use as well with AAL's in the packs.
So, the basic jist is...flip the springs around, and set the center pins back or forward on the perches to gain the stretch.
I know this is remedial for you guyz, but Im just getting my learn on.
Ill be using my 62 axels for this project as well if that helps.
thanks for the info.
Chicago
EWheeler
GOLD Star
I am just finishing up stretching my 40 and final wheelbase ended up around 104ish. I am using flipped 60 springs out back with new ruffstuff spring hangers & shackle hangers. Pin in on furthest forward hole on ruffstuff spring perch. See this thread for a little more info on my set-up:
https://forum.ih8mud.com/40-55-series-tech/288279-60-rear-springs-40-shackle-length-question.html
I have stock 4 speed transmission with AA rockbox in between tranny & transfercase & my rear driveshaft is 27.75". Not sure how the length of this dreivetrain setup compares to what you are using, but I could measure to give you some reference. I feel I could get a couple more inches out of the rear by moving the spring hanger back and mounting the shackle hanger to the face of the rear crossmember.
I chose 60 springs for a couple of reasons.
https://forum.ih8mud.com/40-55-series-tech/288279-60-rear-springs-40-shackle-length-question.html
I have stock 4 speed transmission with AA rockbox in between tranny & transfercase & my rear driveshaft is 27.75". Not sure how the length of this dreivetrain setup compares to what you are using, but I could measure to give you some reference. I feel I could get a couple more inches out of the rear by moving the spring hanger back and mounting the shackle hanger to the face of the rear crossmember.
I chose 60 springs for a couple of reasons.
- Larger bushings hold up longer than the 40 spring bushings.
- Everyone thinks 55 rears are worth their weight in gold.
- 60 rears are offset so flipping them & re-drilling the milwrap leaf gains you a little bit of wheelbase.
- Longer spring compared to 40 spring give you better flex and a little plusher ride on the road (I have to drive everywhere).
- Cheap
RIGHT ON Ewheeler!
Thanks for the link. The pics make all the difference. I LIKE PICTURES!
BITCHIN job on the build too. Seriously...it came out great!
I might be stealing that front bumper idea you did or making some form of variation of that.
So as best I can tell then, it doesnt REALLY matter how far forward or backward the axel gets pushed, the only thing that its all really going to effect is the drive shaft length, right?
To clarify....the engine, trans t case etc. will be in a set, given location. With that being the case, pushing the axels out length wise SHOULDNT affect anything with the function of the power train, except the length of the shafts, right? Theoretically, I SHOULD make the WB as long as possible right out of the gate and adjust PRN from there?
THanks,.
Chicago
The longer you go, the easier you'll high center. With 35's and a 100" wb, you'd be at about the same breakover angle as 37's and 104" wb. With a longer wheelbase, you're actually going to have less breakover with the 37's than you would with 35's and 100" wb.
It's all trade offs.
It's all trade offs.
EWheeler
GOLD Star
Chicago,
I have never done a motor swap, but I would imagine you would have room to move the drivetrain forward a tad with the V8 swap.
Here are a couple more threads I have saved on wheelbase for some more reading.
[FONT="]Wheelbase questions....revisited - Pirate4x4.Com Bulletin Board[/FONT]
Whats your FJ40 wheelbase - Pirate4x4.Com Bulletin Board
I have never done a motor swap, but I would imagine you would have room to move the drivetrain forward a tad with the V8 swap.
Here are a couple more threads I have saved on wheelbase for some more reading.
[FONT="]Wheelbase questions....revisited - Pirate4x4.Com Bulletin Board[/FONT]
Whats your FJ40 wheelbase - Pirate4x4.Com Bulletin Board
Sitting just shy of 105" 
Wicked. I need to fiddle with the wheelbase on my 60 a bit.
