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ganz
December 16th, 2005, 12:54 PM
Any thoughts on how a Dana 30 and 35 axles with truetrac diffs and OEM 4.10 gears on 33 12.50 tires are going to hold up with a chevy 350 (5.7) Its stock 350 TBI engine rated at about 230 hp and 310 torque out of a 91 chevy truck. I have a vortec 4.3 (about 160 hp and 255 torque) in my YJ now with a 4l60e trans. The V6 runs good but Im looking for more power and torque. Besides a YJ with a V8 just sounds right. I use my Jeep for a daily driver in the winter.
I know alot depends on how hard I use my equiptment, Im normaly not that hard on things but I will be if its needed.
Any info on radiators, electric fans, problems with conversion, etc would be great help

Thanks Ganz

95geo
December 16th, 2005, 01:35 PM
you might be better off just swapping in a vortec 4.3, put a cam in it and you have easily 200hp with less weight

WhiteRhino
December 16th, 2005, 02:24 PM
It will hold up pretty well. I ran that setup with no problem running 32 x 14.50 Mickey Thompsons.

When I switched to 35 " Krawlers, it didn't take to long to break it. But I am running a solid 330 hp, not a daily driver & I have a tendancy to push it.

Use common sense & you will do fine.

keithshotrodshop
December 16th, 2005, 06:19 PM
I think it should hold up-but you say you have a vortec 4.3 now. You should be rated at 200 or 195 horses. Or do you have a TBI unit? If so, it's not a vortec

MuddyPaws
December 17th, 2005, 01:36 AM
I have a injected 383 stroker with the 30/35 combo that is locked. No problems yet...running 33x12.5 15 ProComp muds as DD tires and have had 33 inch boggers and LTB's on there too.

ganz
December 19th, 2005, 07:51 AM
Yes it is a Vortec 4.3 (CPI) out of a 93 S10 Blazer.

keithshotrodshop
December 19th, 2005, 10:21 AM
I have the same motor in my 93 jimmy. They are rated at 200 horses and I believe around 270 torque. Pretty good for such a little motor. Swapping to a tbi 350 doesn't have enough increase for me to deal with the extra weight. Now maybe a 350 vortec?

95geo
December 19th, 2005, 01:29 PM
<div class='quotetop'>QUOTE(keithshotrodshop &#064; Dec 19 2005, 09&#58;21 AM) 7159</div>

I have the same motor in my 93 jimmy. They are rated at 200 horses and I believe around 270 torque. Pretty good for such a little motor. Swapping to a tbi 350 doesn&#39;t have enough increase for me to deal with the extra weight. Now maybe a 350 vortec?
[/b]

they arent THAT powerful, if its a true obd II vortec it should be rated at about 190hp and 235 lb ft the fullsize truck and marine application 4.3&#39;s had 200 hp and im not sure about the torque thats the best i can remember.

i would forget the swap because its too much work for the pay off, heads cam headers and you can have a very potent 4.3...... it is possible to make a naturally aspirated 4.3 make 300hp

Roadhouse
December 19th, 2005, 03:14 PM
I&#39;m agreeing with Bryce. I believe until 94 or 95 4.3&#39;s were only like 170hp and 235ft lbs. Then they jumped up to 190hp and 260ft lbs.

I to would also stick with a 4.3L over a heavier V-8.

lgottler
December 19th, 2005, 03:36 PM
<div class='quotetop'>QUOTE(ganz &#064; Dec 16 2005, 08&#58;54 AM) 7112</div>

Any thoughts on how a Dana 30 and 35 axles with truetrac diffs and OEM 4.10 gears on 33 12.50 tires are going to hold up with a chevy 350 (5.7) Its stock 350 TBI engine rated at about 230 hp and 310 torque out of a 91 chevy truck. I have a vortec 4.3 (about 160 hp and 255 torque) in my YJ now with a 4l60e trans. The V6 runs good but Im looking for more power and torque. Besides a YJ with a V8 just sounds right. I use my Jeep for a daily driver in the winter.
I know alot depends on how hard I use my equiptment, Im normaly not that hard on things but I will be if its needed.
Any info on radiators, electric fans, problems with conversion, etc would be great help

Thanks Ganz
[/b]

I&#39;m not sure how many answered this....

Guys have broken the D35c with a stock I-6, some even with a 4cyl. and some haven&#39;t with a built 350.

If I already had the setup in my Jeep that just required a simple (kinda) swap, heck, I&#39;d do it&#33; It would be nice to have the power there if you needed it&#33; You can always carry spare shafts and when you start to break, upgrade the axles next...

Lucas

MuddyPaws
December 22nd, 2005, 09:43 PM
Yea, i&#39;m not upgrading till I bust it worse than a simple shaft...I have the non-c though.