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Gear Vendored 727 and a sure grip #1277423 08/01/12 02:42 AM 08/01/12 02:42 AM
Joined: Aug 2010 Posts: 185 east bay ca T torqueaddict OP member
torqueaddict OP member T Joined: Aug 2010 Posts: 185 east bay ca	Hey guys the trans guy I use to build my tranmissions was going to put a 4 pinion piece in place of the 3 to handle more torque for my stroker. I have decided to try and get a gear vendor unit and I am worndering will ths enhancment be necessary with the gear vendro unit or is the combo of the 727 and gear vendor bullet proof on theyre own. Also I am curious what all could be added to a sure grip pumpkin to make it more durable, also if I have a 323 unit is it possible to buy parts for 410 unit or is that alot of work for what your getting? Also how hard are 410 units to find? Thanks guy! Anthony

Re: Gear Vendored 727 and a sure grip [Re: torqueaddict] #1277424 08/01/12 08:44 PM 08/01/12 08:44 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	????????

Re: Gear Vendored 727 and a sure grip [Re: Kern Dog] #1277425 08/01/12 09:25 PM 08/01/12 09:25 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	Quote: ???????? I dont understand him either .. I am truckless..

Re: Gear Vendored 727 and a sure grip [Re: 340SHORTY] #1277426 08/01/12 09:33 PM 08/01/12 09:33 PM
Joined: Nov 2003 Posts: 2,939 GA roadrunninMark master
roadrunninMark master Joined: Nov 2003 Posts: 2,939 GA	Translation--- wants to know if he needs the 4th thing in the trans to handle more power for his stroker and a gear vendors or is the 3 standard thing is enough. 2nd ? was what he needs to make the 8 3/4 stronger to handle more power as well.

Re: Gear Vendored 727 and a sure grip [Re: roadrunninMark] #1277427 08/01/12 09:48 PM 08/01/12 09:48 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	Oh,, a 4 planetary unit stronger than a 3 planetary unit. Id highly suggest a bolt in sprag. Use a clutch style suregrip unit.. I am truckless..

Re: Gear Vendored 727 and a sure grip [Re: 340SHORTY] #1277428 08/02/12 06:27 AM 08/02/12 06:27 AM
Joined: Aug 2010 Posts: 185 east bay ca T torqueaddict OP member
torqueaddict OP member T Joined: Aug 2010 Posts: 185 east bay ca	Sorry guys I did mean the 4 pinion planetary gears. I couldn't think when I made the post. Also how can I tell if it's a clutch style unit or a less desirable unit? Thanks

Re: Gear Vendored 727 and a sure grip [Re: torqueaddict] #1277429 08/02/12 12:54 PM 08/02/12 12:54 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	4 pinions are stronger than 3, 5 are stronger than 4! The bolt-in sprag is a good idea, as is a billet drum (so I've heard). The Gear Vendors unit doesn't decrease the load on the transmission, so transmission strengthening is still a good thing. You need to find pictures of the two different Sure Grip units and look at what you have. If it's a 489 case, it should have the cone type, if a 742 case it should be the clutch type and if it's a 741 it could be either. And, of course, anything could have been swapped into any case over the last 40 years! Can you swap your 3.23s for 4.11s? Sure, this is a job for a rear end specialist, but it's done all the time. The 3.91 gearset seems to be the most popular. R.

Re: Gear Vendored 727 and a sure grip [Re: dogdays] #1277430 08/02/12 04:05 PM 08/02/12 04:05 PM
Joined: Jan 2003 Posts: 25,823 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,823 Rio Linda, CA	Quote: 4 pinions are stronger than 3, 5 are stronger than 4! Not necessarily true...the weak part of any aluminum planetary is the spline, not the pinion count. The INTERNET, the MISinformation superhighway

Re: Gear Vendored 727 and a sure grip [Re: John_Kunkel] #1277431 08/02/12 06:33 PM 08/02/12 06:33 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Well, you know a heck of a lot more than I do about this, that's for sure. But isn't it true that regular TFs got 3 pinions, Motorhomes and some HP engines got 4 pinions, and Hemis got 5? My DC Chassis books are packed away so I can't check. R.

Re: Gear Vendored 727 and a sure grip [Re: dogdays] #1277432 08/02/12 06:44 PM 08/02/12 06:44 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Well, you know a heck of a lot more than I do about this, that's for sure. But isn't it true that regular TFs got 3 pinions, Motorhomes and some HP engines got 4 pinions, and Hemis got 5? My DC Chassis books are packed away so I can't check. R. I'm thinking your confusing clutch count vice pinon count in the trans. Pretty sure anything more than a 3 pinion is an aftermarket deal on a 727. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Gear Vendored 727 and a sure grip [Re: John_Kunkel] #1277433 08/02/12 06:46 PM 08/02/12 06:46 PM
Joined: Nov 2003 Posts: 3,434 Dandridge TN D Dabee master
Dabee master D Joined: Nov 2003 Posts: 3,434 Dandridge TN	Quote: Quote: 4 pinions are stronger than 3, 5 are stronger than 4! Not necessarily true...the weak part of any aluminum planetary is the spline, not the pinion count. I have a 727 equipped GV behind my 511 stroker. My 727 has the three pinion gear, bolt in sprag and a reverse manual VB. I also run a Dana. I have had no problems with my set up.

Re: Gear Vendored 727 and a sure grip [Re: John_Kunkel] #1277434 08/03/12 01:33 AM 08/03/12 01:33 AM
Joined: May 2003 Posts: 6,562 Downtown Roebuck Ont Twostick Still wishing...
Twostick Still wishing... Joined: May 2003 Posts: 6,562 Downtown Roebuck Ont	Quote: Quote: 4 pinions are stronger than 3, 5 are stronger than 4! Not necessarily true...the weak part of any aluminum planetary is the spline, not the pinion count. My trans guy used to race a AA/SS Hemi Cuda and they used to take out 2 of the 4 pinions to reduce rotating weight. Never broke a pinion but splines?... Kevin

Re: Gear Vendored 727 and a sure grip [Re: Supercuda] #1277435 08/03/12 03:42 PM 08/03/12 03:42 PM
Joined: Jan 2003 Posts: 25,823 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,823 Rio Linda, CA	Quote: Pretty sure anything more than a 3 pinion is an aftermarket deal on a 727. 4-pinion planetaries are common in many '67 and later 727's; 5-pinion planetaries first appeared in the diesel OD. The INTERNET, the MISinformation superhighway

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