[Diy_efi] TCC control

Thu Jul 4 21:56:11 GMT 2002

--part1_68.22815c84.2a561d9f_boundary
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit

what kind of mods have to be done in the '85 valve body to control it with 
the ECM? I know the 4-3 downshift switch must be removed because that is a 
function of the ECM (through delta TPS% ?). What about the plugs they (GM) 
installed in place of the TV sleve and the TCC shift valve. Will I need to 
install the aluminium plugs? These mods are why I decided on the old style 
control. But, you seem to have some experience with both. I'm split between 
the simplicity of the old style and the adjustability of the ECM control. I'm 
running a Comp 4X4 Xtreme cam (218int/226ex w/111 lobe sep.) Will that cam 
cause the vac. switch to search, like you described? I'm a few days from 
starting the truck and in the middle of the EFI wiring. I'm on a time limit, 
but I want to do it right the first time. So any experience shared would be 
greatly appreciated. Thanks again.

Beau

P.S.  any ideas on what EPROM mods to start out with would be a real help. 
Considering the above cam, Pro-jection TB w/85 PPH injectors, pre-'95 heads 
(68cc) with pocket porting, Edelbrock Performer intake. I have a few stock 
.bin's already burned in hopes that one will at least get me started. I also 
have a scan tool and an EPROM burner to help with the task. But, professional 
advise is always welcomed.

--part1_68.22815c84.2a561d9f_boundary
Content-Type: text/html; charset="US-ASCII"
Content-Transfer-Encoding: 7bit

<HTML>what kind of mods have to be done in the '85 valve body to control it with the ECM? I know the 4-3 downshift switch must be removed because that is a function of the ECM (through delta TPS% ?). What about the plugs they (GM) installed in place of the TV sleve and the TCC shift valve. Will I need to install the aluminium plugs? These mods are why I decided on the old style control. But, you seem to have some experience with both. I'm split between the simplicity of the old style and the adjustability of the ECM control. I'm running a Comp 4X4 Xtreme cam (218int/226ex w/111 lobe sep.) Will that cam cause the vac. switch to search, like you described? I'm a few days from starting the truck and in the middle of the EFI wiring. I'm on a time limit, but I want to do it right the first time. So any experience shared would be greatly appreciated. Thanks again.
 
 Beau
 
 P.S. &nbsp;any ideas on what EPROM mods to start out with would be a real help. Considering the above cam, Pro-jection TB w/85 PPH injectors, pre-'95 heads (68cc) with pocket porting, Edelbrock Performer intake. I have a few stock .bin's already burned in hopes that one will at least get me started. I also have a scan tool and an EPROM burner to help with the task. But, professional advise is always welcomed.</HTML>

--part1_68.22815c84.2a561d9f_boundary--

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi