My reply was in the context of putting the for-sale sure-grip and desired lower gear into his existing 741 case.
It would be foolish to invest the several hundred dollars in bearings, r&p, and labor need to do this into the weakest case they made. Particularly when 742 or 489 cases can be had for under a hundred bucks, even on evilbay.
Wakeman----- Original Message ----- From: "Bill" <Y1TopBanana73@xxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx> Sent: Saturday, October 25, 2008 8:06 AM Subject: Re: Sure Grip for sale
THEORETICALLY that's true, but I have a friend of mine with a 69 Dart, 383, 727, 4.10's, street slicks, running 11.85's using a 741 case without any issues. The car is on the street and he uses the gas pedal like an on-off switch. He has has a 69 Satellite, healthy 440, 4spd he drives the same way with a 741 case in it...no problems there either. I would get a larger pinion case if you can find one easily, but don't think your 741 is going to grenade the first time you hit the gas. Bill M On Fri, Oct 24, 2008 at 8:20 PM, Wakeman Massie <wakey@xxxxxxxxxxx> wrote:Jimmie, if the '65 Belevdere rearend you plan to upgrade is from the so-to-be-440 powered wagon you list in your sig, a 741 case is not a goodchoice to invest in. The pinion stem was not designed to support the torqueeven a mild 440 will produce, especially in a 3900lb vehicle.Furthermore, unless you have some good used gears or NOS gearsets, 741 ringand pinions are unavilable and have zero aftermarket support. There is a reason for this. The Chrysler 8 3/4 guide penned by a person nicknamed Vaanth is essential reading - Google it. It explains clearly the different cases and their strengths and weaknesses. If you want to go for a sure-grip - which is a great idea - I'd look for a 742 (my choice) or a later 489 case (biggestpinion stem). Either of these will be more than adequate unless your 440 isa really wild one. Best Regards Wakeman----Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks!'62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.
---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines:http://www.1962to1965mopar.ornocar.org/mletiq.html.