700R4 in stock class??????????

stock eliminator · 03-27-2010, 07:31 PM

anybody try a 700r4 with the low first gear?????????

Alan Roehrich · 03-27-2010, 08:07 PM

It's very heavy internally. The forward input drum is weak, and there is no real serious fix. There are other durability issues. I've gotten them to live "okay" at around 450HP or so in cars lighter than 3450#. They have a terrible drop between 1st and 2nd gear.

VORTECPRO · 03-27-2010, 08:17 PM

Quote:

Originally Posted by Alan Roehrich

It's very heavy internally. The forward input drum is weak, and there is no real serious fix. There are other durability issues. I've gotten them to live "okay" at around 450HP or so in cars lighter than 3450#. They have a terrible drop between 1st and 2nd gear.

I think the first gear is to low in most applications, not allowing the converter to multply torque as efficiently on the foot brake.

Alan Roehrich · 03-27-2010, 09:09 PM

You can take gear out of the rear end to solve the excess low gear, but nothing solves the excessive drop between 1st and 2nd. It is possible, with machine work and welding, to make the low gear in a 700 2.75 instead of 3.06. But it just isn't worth the effort or expense.

03-27-2010, 07:31 PM	#1
stock eliminator Junior Member Join Date: Apr 2008 Location: Kearney Nebraska Posts: 24 Likes: 0 Liked 0 Times in 0 Posts	700R4 in stock class?????????? anybody try a 700r4 with the low first gear?????????

03-27-2010, 08:07 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,097 Likes: 1,542 Liked 1,775 Times in 404 Posts	Re: 700R4 in stock class?????????? It's very heavy internally. The forward input drum is weak, and there is no real serious fix. There are other durability issues. I've gotten them to live "okay" at around 450HP or so in cars lighter than 3450#. They have a terrible drop between 1st and 2nd gear. __________________ Alan Roehrich 212A G/S

03-27-2010, 09:09 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,097 Likes: 1,542 Liked 1,775 Times in 404 Posts	Re: 700R4 in stock class?????????? You can take gear out of the rear end to solve the excess low gear, but nothing solves the excessive drop between 1st and 2nd. It is possible, with machine work and welding, to make the low gear in a 700 2.75 instead of 3.06. But it just isn't worth the effort or expense. __________________ Alan Roehrich 212A G/S