jakers

My differential is out of the car right now. Perfect time to install a drain to assist in changing out the gear oil in the Dana 44. I have read about a kit that was available a few years ago. Can anyone direct me to a good vendor of make a recommendation? thanks!

neat

I just drilled into the bottom bolt hole. I put some silicone and an oil drain plug washer on the bottom bolt and haven't ever had a problem. I just pull out the bottom bolt when I want to drain the fluid.

jakers

Thanks, that is an interesting approach. I looked at that and was thinking about it. Wondering, out loud, if that would weaken the pumpkin? I will need to look a mine again.

turbotim23

I saw where anther person just drilled straight up into the gasket flange from bottom,and put in a very small allen head plug w/gasket sealer on the threads. Or you could buy the kit to put a plug in rear cover,I think they are only about 75.00.They have a paper hole locator,drill,tap,plug.Even seem them on ebay awhile back. Good luck

Jagdpanzer

http://forums.corvetteforum.com/c4-t...ne-search.html

Here are some pics of a 1/4" drain hole I put in during the 4.10 gear install I did last year. The brass plug was replaced with an anodized aluminum allen socket type I picked up from the local speed shop.

383vett

Just drill and tap with 1/4 npt. I used an allen head pipe plug. Fitted flush and didn't leak.

No Go

Knowing my luck if I drill a hole into my axle it will leak.

I will stick with a 10 buck sucker pump every 20,000 miles.

383vett

Try it, you'll be ok. On one of my differentials, I did it without even opening it up. Just coat the tap with grease so the shavings stick to the tap. Open the filler plug and shop vac from the newly tapped hole. This will remove any shavings that got left behind. The sucker pump won't pull out all the poo at the bottom of the case. The drain hole will get most of everything and is a lot neater.

ironvapor

I got the kit from Corvette Central . I installed it on a Dana 44 while it was out of the car. I was not eager to drill into the pumpkin for fear I would cause a very expensive mistake so I installed the drain plug in the lower part of the Batwing near a bolt. I just figured a batwing is cheaper than a housing . Maybe too cautious on my part but I got the idea on the forum from someone else who did the same thing.

toptechx6

See my post #4

http://forums.corvetteforum.com/c4-t...questions.html

jhammons01

I did this to my O/D oil pan based on articles found from folks adding this the their Diff.

The thing is, the tech articles all assume you have a sheet metal cover. The D36 or D44 is a bit different. I like how jagdpanzer pulled it off.

jhammons01

Here is a picture of the Drain plug I put on the 4x3 Overdrive pan.

jhammons01

Here is what the "kit" looks like

turbotim23

Jahammons01 I've put that type of drain in two or three of my cars. Never had a bit of problems with them. I'm putting a shift kit in my car later this summer and will put one of those in my tranny pan when I have it off.

Lt4-396

Is this still for sale?

RUU

http://www.parts123.com/corvettecent...50f&ukey=10327

FostersPerformance

I did my 36, but tapped for 3/8 course and used a crush washer, no problem...I used this thread because that's what our gear oil pump has on it, so makes my life easier.

mtwoolford

I drilled and tapped mine while it was on the bench; I used a 1/8th inch NIP stainless pipe plug with an recessed allen head; plenty big enough to drain differential, didn't take off much metal and the allen head makes reinserting the plug upwards between the exhaust pipes easy.