T/A Style Differential cover or ??

SSGN · 02-07-2024, 10:11 PM

I did a search and I must say my eyes are sore lol. I am curious to what would be better. The T/A style Alum diff cover or Stange/Mark Williams billet caps and a stud kit from Moser on a GM Rear end Thanks in advance for your opinions.

Doug Domm · 02-07-2024, 10:41 PM

I have all of the above except my cover is a vintage Geis Girdle. I believe that TA cover is much the same design and function of my vintage Geis. It also functions as an adjustable support bridge (girdle) over the caps making the cover body as an additional cap support. I would also like to find another Geis cover for a vintage project I’m working on. They also made one for the Dana as well and could use one of those as well. I’ve heard there are some off shore ones out there and that the casting is of poor quality and strength but so far I haven’t heard of any issues with the TA.

SSGN · 02-08-2024, 08:46 AM

The T/A cover is Made in USA and they supply many other companies including Toms Differentials. The Logo is the only difference.
Thanks

curtis reed · 02-08-2024, 09:40 AM

I put the support cover and the Mark Williams caps on my 12 bolt at the same time. Didn't do studs just the cap screws and so far has extended my gear life from 250-270 run avg to 473 right now on this set. I just run street gears and my car is really light but it still gives a comparison. Same person set up the last 3 gear sets for me and he is super meticulous and consistent.

Low to mid 1.20s in 60' both footbraking and leaving on the transbrake index racing.

Curtis

1320racer · 02-08-2024, 12:58 PM

I used the T/A girdle cover on the 12 bolt in my Chevelle for years. That said, I didn't typically get more than 200 passes on the R&P

curtis reed · 02-09-2024, 11:47 AM

Quote:

Originally Posted by 1320racer

I used the T/A girdle cover on the 12 bolt in my Chevelle for years. That said, I didn't typically get more than 200 passes on the R&P

That thing was a fast heavy tank though.

1320racer · 02-09-2024, 11:55 AM

it was, 3880 lbs. going down the track

SSGN · 02-09-2024, 08:26 PM

Quote:

Originally Posted by 1320racer

I used the T/A girdle cover on the 12 bolt in my Chevelle for years. That said, I didn't typically get more than 200 passes on the R&P

Did you use the Toms/Mark Williams billet caps and cap screws??

Thanks

1320racer · 02-09-2024, 08:49 PM

I did not

02-07-2024, 10:11 PM	#1
SSGN Senior Member Join Date: Feb 2006 Posts: 625 Likes: 110 Liked 130 Times in 46 Posts	T/A Style Differential cover or ?? I did a search and I must say my eyes are sore lol. I am curious to what would be better. The T/A style Alum diff cover or Stange/Mark Williams billet caps and a stud kit from Moser on a GM Rear end Thanks in advance for your opinions. __________________ The more people I meet the more I like my dog Kevin

02-07-2024, 10:41 PM	#2
Doug Domm Member Join Date: Apr 2006 Location: canada Posts: 244 Likes: 26 Liked 40 Times in 19 Posts	Re: T/A Style Differential cover or ?? I have all of the above except my cover is a vintage Geis Girdle. I believe that TA cover is much the same design and function of my vintage Geis. It also functions as an adjustable support bridge (girdle) over the caps making the cover body as an additional cap support. I would also like to find another Geis cover for a vintage project I’m working on. They also made one for the Dana as well and could use one of those as well. I’ve heard there are some off shore ones out there and that the casting is of poor quality and strength but so far I haven’t heard of any issues with the TA.

02-08-2024, 08:46 AM	#3
SSGN Senior Member Join Date: Feb 2006 Posts: 625 Likes: 110 Liked 130 Times in 46 Posts	Re: T/A Style Differential cover or ?? The T/A cover is Made in USA and they supply many other companies including Toms Differentials. The Logo is the only difference. Thanks __________________ The more people I meet the more I like my dog Kevin

02-08-2024, 09:40 AM	#4
curtis reed Member Join Date: Jul 2011 Location: Kiefer, Ok. Posts: 139 Likes: 46 Liked 89 Times in 50 Posts	Re: T/A Style Differential cover or ?? I put the support cover and the Mark Williams caps on my 12 bolt at the same time. Didn't do studs just the cap screws and so far has extended my gear life from 250-270 run avg to 473 right now on this set. I just run street gears and my car is really light but it still gives a comparison. Same person set up the last 3 gear sets for me and he is super meticulous and consistent. Low to mid 1.20s in 60' both footbraking and leaving on the transbrake index racing. Curtis

02-08-2024, 12:58 PM	#5
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 1,778 Likes: 70 Liked 400 Times in 191 Posts	Re: T/A Style Differential cover or ?? I used the T/A girdle cover on the 12 bolt in my Chevelle for years. That said, I didn't typically get more than 200 passes on the R&P

02-09-2024, 11:55 AM	#7
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 1,778 Likes: 70 Liked 400 Times in 191 Posts	Re: T/A Style Differential cover or ?? it was, 3880 lbs. going down the track

02-09-2024, 08:49 PM	#9
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 1,778 Likes: 70 Liked 400 Times in 191 Posts	Re: T/A Style Differential cover or ?? I did not