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How strong are these I know the gm 10 bolt that are in the 93-03 f-bodys are 7.5 adn 7.625" ring gear and the dana 36 is a 7.725" right? Anyways the 7.5's and 7.625's are weak as hell.
If you are going to drag race a lot, get a Dana 44. The 36, some are good some aren't, we've never really checked to see if there is a difference between which ones break easily and which ones don't.
I made about 30 passes on my 36 with street tires and toasted the posi once and something else broke on the last pass(I haven't opened it up to look yet).
Others have made nearly 1000 passes with drag radials and slicks with no problems at all.
If you are just looking for an IRS with occasional drag racing, a 36 should hold up fine, if you are more serious about drag racing a 44 would be better, but if you are going hardcore, a Ford 9" or a Dana 60 would be a better choice.
I have a dana 36, I will hopefully swap out my auto for a T-56, and will to some things to my engine to bring it to about 350HP and 375TQ, will the Dana 36 hold up? I would probably barely ever Drag Race. ON what conditions do they break? Excessive TQ? Hard lanches off the line? Or burnouts? I will never use slicks so that wont be a vairable :chevy
Eh well as long as a dana 44 is IRS that would be cool. I like a good all around car good handling is a must but I would like to be able to launch on drag radials I wouldnt bother with slicks, with some pretty damn good power. Any point you think, with drag radials, the power might be too much?
The D36 is supposed to hold down to the 1.7-1.8 60' territory, but that is pushing the limit. The more torque going thru the driveline, the higher the risk of blowing it. A stock/semi-stock engine with a 36 will hold up for a little while, but if you put slicks on then you better be praying. The 44 comes standard on manuals and will probably hold down to the 1.5 60' territory with whatever tire you want.
You'd be better off searching for a 44, but they are hard to come by.
Here's a quote from a post I made a while back.
Ever wonder where we get all these rears from? There are approximately 77,000 manual trans C4's out there out of 358180 made, so with all the donor cars we're finding, that means there are a lot of fun cars that are no longer able to be driven.
[QUOTE]there's a fellow around here that does cryo of rear end parts and swears that a D36 will stand up to nearly 500rwhp with his treatment.QUOTE]
Wow, 500hp...what about TORQUE? :D Will it hold 500rwtq? :D
I can't remember the guys name regarding the durable Dana 36... He spoke of the difference the ratio made also... a 3.07 gear set was stronger than 3.73 gear set... don't ask me why, I already forgot... he also mentioned doing some machine work to the batwing with a couple of additional bolts installed... he said he should have taken pictures of the one he did on his wifes car... so... it is possible to apply a lot of power to the Dana 36... just need to be set up to certain specs 1st... lets see if I can revive that thread...
ted
90 DRM 450
Sun City, CA
Check the thread started by 40th titled
" D36 and 3.73 with drag radials, bad combo?"
That would be me... Jeb Burnett of Deep Freeze Cryogenics, LLC. Since the last time I was on that thread my wife has 10 more passes on her 11.70 second D36 in her '85... Still no breaky... As for the 500rwhp or "500rwtq" that I don't really know. Before we put it back in her car I made a few high 10 passes on it with it in my car which at the time was a 11.2:1 570 hp/505tq (at the flywheel) 396...I stayed off the spray though. Our phone number is (866) 324-2796 and the website is http://www.deepfreezecryo.com. I think the site may be down right now due to a server problem but it should be back up shortly.
-Jeb Burnett
So you are using 3.07 b/c a 3.75 would increase the TQ value to much for the driveshafts and the spindles wont take it? Also your Dana 36 is pretty much stock besides the Beefing up part on the batwing? Or the rear cover for the Dana 36? :confused:
No...I'm actually using a 3.75 gear. But, the higher gear ratios DO move the abusive power to different parts of the drivetrain. Generally when you go with a lower gear you move the shock load more to the differential, when you go with the higher ratios you move the shock load forward of the diff...Ie., less abuse on the diff. My D36 in the wife's car has been fortified with the preload studs in the cover, all of the internals have been cryo-processed, all bearings/races replaced, and the assembly blueprinted. To date we haven't had a problem and it sees dragstrip use a little more often than most cars do.
-Jeb
I'm still running my stock D36 with 3.07 gears with my supercharged 383. I haven't done a lot of serious drag racing, but so far the D36 has held up just fine.
Oh I have some ?'s about cryoing, Does it increase strength or just less wear or what. I askthis becasue I called a cryo company before and they said it just prevents serious damage when somethign fails like a rod will bend instad of break and it reduces wear but it doesnt increase strength... This could seriously increase engine life and increase stock parts strenth enough to avoid having to buy expensive aftermarket parts if it does indeed increase part strength.
Damionvoss
I take it your running an automatic with the D 36... have you changed to a higher speed torque converter?
In your opinion... does your car launch pretty hard compared to the motor before the 383?
Just wanting to get an idea of the strenth of the D 36 with the 3.07 gear...
Thanks...
Ted
90 ZR-1 DRM 450
Sun City, CA
Hmmm..... Isnt it true that an Automatic can multiply the TQ value 2 to 3 times because of the TorqueConverter? If this is so, then why didnt they use a Dana 44 for autos and Dana 36's for manual? Or Do I got this wrong?
Also Would a Dana 36 live with autocrossing and maybe 480rwhpish and about the same TQ?
Plus if you rarely ever go drag racing, at what point must you swap out for a Dana 44? Also about having a higher ratio tranfers the load to the other parts of the drivetrain, and lower gear ratio translates more load to the diff? IF so then to make sure a Dana 36 survives should one change out the stock gears for 3.75? OR greater? :confused: