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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Stewart G Griffin on July 16, 2006, 07:24:00 am

Title: CCC:
Post by: Stewart G Griffin on July 16, 2006, 07:24:00 am

Were any 81-87's computer controlled like the cars?

Title: Re: CCC:
Post by: roundedline on July 17, 2006, 05:07:00 pm

Yes there were 81-86 trucks that had computer controled carbs.  87's had TBI.

Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project

Title: Re: CCC:
Post by: Stewart G Griffin on July 17, 2006, 09:02:00 pm

Where all 81-87's computerized, or just some?

Title: Re: CCC:
Post by: VileZambonie on July 17, 2006, 09:42:00 pm

No as a matter of fact the pickup seemed to be the exception to the rule and featured many without feedback carburetors. Passenger vehicles were plagued with the problematic pieces of garbage that we can all look back and laugh at now.

Title: Re: CCC:
Post by: Stewart G Griffin on July 27, 2006, 02:06:00 pm

So, does "many" mean all?

What about the transmission?

Title: Re: CCC:
Post by: VileZambonie on July 27, 2006, 03:30:00 pm

What about the transmission? As stated above some featured feedback carburetors and EST distributors controlled by the ECM. 87 was TBI

Title: Re: CCC:
Post by: roundedline on July 27, 2006, 03:36:00 pm

I am not sure why you are reasking the second question.

Many means many.

There were no computer controlled transmissions before 1993.  The computer did control the lockup converter though in all 700R4's (82-87 in this series of trucks).

Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project

Title: Re: CCC:
Post by: Stewart G Griffin on July 28, 2006, 09:03:00 pm

How do we determine which trucks were computer controlled and which ones weren't is my reason for asking the quesion again.

Title: Re: CCC:
Post by: roundedline on July 31, 2006, 01:30:00 pm

Other than opening the hood and checking out the carb there isn't a way to tell.  Most California trucks had it though.  Plus, it being 20 years old for the newest model, it is likely that it has been removed.

Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project

Title: Re: CCC:
Post by: Stewart G Griffin on July 31, 2006, 04:08:00 pm

Let's put it this way:
I have an 83 c-10 and i know the tranmission is a 350 lockup type  because i've seen the torque converter.

The distributor has some sort of computer type plug going into it.

The carb, a quadrajet, does not seem to have any electronic connetions to it.

 

Title: Re: CCC:
Post by: roundedline on July 31, 2006, 05:49:00 pm

The stuff on the distributor is the ESC.  Electronic Spark Control was introduced in 1981 on the LE9 305 and was on all 1/2T trucks thereafter, except those that had the availible 350.

Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project