HorseflyDF

Does anyone sell an aftermarket cover for the 10 bolt
that has a fill plug ?

92'Sleeper

Summit, Jegs, Hawks & Thunder Racing. Pick your poison.

JamesC

iTrader: (5)

Scroll down on the following link to view the Summit version:

https://www.thirdgen.org/techbb2/sho...hreadid=249098

JamesC

HorseflyDF

Yesterday I ordered the 10 bolt 7.5 Summit cover online.
Today I looked at the catalogue I have at home and
I noticed it says the cover doesnt work with metric bolts.
Did you any problems using metric bolts ?
I know my bolts are metric I think there 13mm.

Dave

JamesC

iTrader: (5)

I purchased mine from Spohn. It came with all the hardware, including 12-point, IIRC, ARP bolts. All swapped into place without a hitch.

JamesC

HorseflyDF

I ordered it from Summit but its the same cover.
I guess it wont be a problem. Just have to wait
now for the delivery.


Thankyou
Dave

HorseflyDF

I forgot now that I pulled my pan again
its not metric doh.

1/2 standard..

HorseflyDF

The Summit cover came yesterday.
I am disapointed, the finish of it looks like
it was done poorly. Its very rough looking
and on the inside there are some small chips
around cap bearing hole.

Man I cant win with this rear ..

Dialed_In

iTrader: (3)

Shoulda bought a better one then if those things bother you. There's a reason that Summit brand parts are cheaper. The more expensive ones pay a little more attention to detail. Spohn, T/A, Thunder etc..

JamesC

iTrader: (5)

I bought mine from Spohn. It was fine--and it's a Summit brand. Perhaps expectation exceeded reality.

JamesC

HorseflyDF

The other brands I saw where about the same price.

I guess I cant expect much for 150 dollars..?

made in usa to geez

sofakingdom

iTrader: (1)

I have the T/A one; about the same price; quality seemed mostly OK to me. The casting is a bit rough though. But that's OK, I just clear-coated it.

HorseflyDF

If its rough casting then its probably the same as summit
just stamped with a different name.

Thats not my concern anymore because,
I need another 3 series carrier with 26 splines..

HorseflyDF

To bring this back..
I installed the summit cover and
the fill plug on summits cover is at least 1 inch lower
than the fill plug on the 10 bolt.
Whats up with that?

I cant get the original fill plug off it was torqued to much
and partially stripped ...now its totally stripped.
Maybe if I tilt the car forward I can get more fluid in the rear.

sofakingdom

iTrader: (1)

Considering that the relationship of the height of the 2 plug locations changes as the rear is rotated, and different cars (different chassis designs such as S-truck and F-car, for example, as well as different individuals of the same design) rotate their rear ends differently due to suspension design or spring strength or whatever, 1" of difference sounds pretty close to me.

I wouldn't get all exceited about the 1" of fluid; probably not more than a couple of ounces of difference, since the majority of the internal volume of the carrier at that height is filled up with moving parts.

Summit doesn't "make" rear end covers (or much of anything else for that matter). They BUY them from someone, and they buy enough that they can custom-order them with their name stamped on them. So you don't have a "Summit" cover, you have some other kind, that says "Summit" on it instead of whoever made it.

I have a T/A cover. T/A MAKES their covers. For all I know, the Summit cover might ACTUALLY BE a T/A cover. I don't know offhand whose cover a Spohn one actually is; I'm pretty sure Steve doesn't cast his own, but rather buys and resells one, but I don't know which. Given that the only 2 I've ever seen were the T/A one and the AAM one, and the AAM one is VASTLY DIFFERENT from the T/A one, and I've seen T/A ones all over the place with other names on them, I'd suspect yours is ACTUALLY very much like mine.

http://www.taperformance.com/rearend.htm Look familiar?

HorseflyDF

Yeah it looks the same.

On another note about the amount of fluid that
should be used to fill the rear, Ive heard fill it till
it comes out of the hole about 2 quarts.
When I checked out this site to rebuild the rear.

http://www.chevyhiperformance.com/te...148_0207_bolt/
they said 3 quarts at the very end of the article.

It looked like the rear cover that they used had the fill
plug below the centerline like summits.

The gm parts dealer said 2 quarts also..
maybe I should email chevyperformance and ask how did
they put 3 quarts of fluid in that rear.

Now that I think of it if I could get the fill plug out of the rear
I would be able to check both levels : )
Whatever

sofakingdom

iTrader: (1)

I don't know where the 3 quarts came from.

There's like hundreds of sources that say 2 quarts, including the factory service manuals; I'd tend to discount ONE source that says 3, a magazine article no less, no matter how high their "prestige" factor. Anybody can make a typo. And magazines aren't exactly what most of us would consider a fount of wisdom and hard facts and guaranteed accuracy, even if they do have "GM" in the title.

I've dealt with GM 7.5s of my own and my family's in full-size cars, S trucks, El Camino/Monte Carlo type cars, and these cars. Seems like they all always took about 2 quarts, more or less. Ones without posi will take a little more because there's more volume not filled up in there with parts. Ones with lower number ratios will take a little less because the pinion is so much bigger. And so forth. The internals vary enough to strongly affect the actual fluid capacity.

Incidentally, the AAM cover holds more fluid; it's deeper front to rear, and has the little cooling channel in it.

As long as there's enough in there to keep the parts bathed, and to keep cool, but not so much that it's forced out the axle tubes and the vent, it's fine.

HorseflyDF

Thanks perhaps they did have that aam cover at gm performance.

I was just thinking that if I could get the fill plug
off the rear end then I could make a comparision.
Wonder if anyone else was curious to see that comparision.
I dont want to even try to take it off anymore considering
I might make the problem worse.

Next I have to get some carrier shims and a magnetic
dial indicator to check back lash .Its been a good learning experience.