[Gmecm] 700r4 year

[Programmer]

If I may interject...

There are 13 vane pumps available, regulator mods to the pump,  '10 stack' 
3/4 packs from the factory 5-6, HD sprags from the 4L60E and 4L65E, as well 
as better sunshell builds that don't break. Choosing a good 2/4 band as well 
as servo definitely helps.

The lockup is simple enough to wire--as it relys on the pressure switches to 
complete the circuit. You can have automatic locking in 3rd and 4th, 
depending on how you wire it. The factory uses a different switch on the 
brake to go 'open circuit' when the brake is applied to disengage the TCC 
circuit.

As Craig mentioned, I wouldn't even look at a pre 1988 trans.

Lyndon

----- Original Message ----- 
From: "Craig Moates" <craig.moates at cox.net>
To: <gmecm at diy-efi.org>
Sent: Tuesday, January 16, 2007 11:07 PM
Subject: RE: [Gmecm] 700r4 year


> Yes, that's right. Mid 87 changed the pump vanes from 7 to 10, and also
> auxiliary valve body changes. The 88+ are the way to go, but you can 
> upgrade
> the 87- to some extent if needed. Typical upgrades are the corvette servo,
> 10 vane pump, and extra clutch packs (truck duty).
>
> Best regards,
> Craig Moates
>
>
> -----Original Message-----
> From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On 
> Behalf
> Of Jason M.
> Sent: Tuesday, January 16, 2007 3:48 PM
> To: gmecm at diy-efi.org
> Subject: [Gmecm] 700r4 year
>
> it's roughly 88 or 89 up is the "better" years for 700r4/4L60 
> transmissions.
>
> More vanes in the pumps and supposedly little design changes that make the
> internals stronger.
>
>
> ----- Original Message ----- 
> From: <BNRVL at aol.com>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, January 16, 2007 12:43 PM
> Subject: Re: [Gmecm] V8 speedo calibration
>
>
>> the road , as my Transmission guy told me he can make the 350 and a
>> lock-up
>> torque converter work , with some toggle switches until I replace the 350
>> with
>> the 700R 4 , later .
>
>
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