Toploader Maincase --- Nodular Iron vs Aluminum

[4pipes]

I wouldn't worry about the weight. After experiencing the problems of differential thermal expansion in the aluminum differential case, I'd go with the iron vs aluminum for a transmission case until they start making aluminum gears and shafts.

[RodKnock]

Originally Posted by 4pipes

I wouldn't worry about the weight. After experiencing the problems of differential thermal expansion in the aluminum differential case, I'd go with the iron vs aluminum for a transmission case until they start making aluminum gears and shafts.

I've only heard of two aluminum rear ends from Kirkham having issues, Dave (4pipes) being one of them. I have no idea about the statistics of how many have been sold and how many have had problems, but, knock on wood, mine is still fine.

[DAVID GAGNARD]

According to David Kee's site, the price difference in an iron main case and an alum. one is about 65 bucks, and I seem to remember something about 20 pounds lighter for the alum. one.......

Alum is nice, but for the most part no one will see it and I'd prefer the iron one for longevity....just my opinion.......

David

[ERA Chas]

Originally Posted by DAVID GAGNARD

According to David Kee's site, the price difference in an iron main case and an alum. one is about 65 bucks, and I seem to remember something about 20 pounds lighter for the alum. one.......

Alum is nice, but for the most part no one will see it and I'd prefer the iron one for longevity....just my opinion.......

David

Thanks for answering those questions David. The cost is fine, the weight is insignificant unless you're yanking the trans very frequently. Guess the user experience says there are no expansion problems.

[DAVID GAGNARD]

Originally Posted by ERA Chas

Thanks for answering those questions David. The cost is fine, the weight is insignificant unless you're yanking the trans very frequently. Guess the user experience says there are no expansion problems.

Chas.:

Have and have had a few Mustangs with toploaders. I road race one now with a TL and for "normal" street driving/cruising, I think an alum. case would be fine, for any form of racing, be it drag racing/road racing or whatever, I'd stick with an iron case, but this is just my opinion.....I'm sure some have used the alum case in racing application without problems....I road race a 65 Mustang in Vintage class and off-hand don't know of anyone using an alum case in their car.

David