GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Electronic QuadraJet and factory Electronic Spark Control (CCC, ESC, E4ME, E4MC, E4MED, E4MEF)
Re: Electronic QuadraJet and factory Electronic Spark Control [message #334290 is a reply to message #333798] Sat, 30 June 2018 21:50 Go to previous messageGo to previous message
BoboBob13 is currently offline  BoboBob13   United States
Messages: 49
Registered: June 2018
Location: Las Vegas
Karma:
Member
I got one of those carbs-they call it a dual capacity accelerator pump that the shop I bought my 76 GMC from
put on when they built the engine. The builder left out the solenoid and has a pug in the top where the wiring
would go. These carbs had no (MC) mixture control solenoid or (TPS) throttle position sensor. From what
I have been able to find out so far is they were on 85-86 non computer controlled trucks 305 on up. I am looking
for the jets and rods that were used on this carb to have some place to start tuning.


after doing some more checking I found this http://forum.73-87chevytrucks.com/smforum/index.php?topic=10151.0

not all the info is correct as some people there have there own ideas about it but from what I can tell
there were 2 types-1 was CCC-computer controlled carb with the dual capacity pump and the other non CCC
with just the pump. With no solenoid the pump doesn't work. Only way it works is with a solenoid and with
it activated. Should be an 800 CFM unit. No harm to run without solenoid. If some how hooked it up to
work I think it would be unneeded if the carb was set-up right including the accelerator pump. From
what I can see it was only used under 170 F on the coolant temp.


Bob Broadwell 75 Eleganza II-Rebuilt performance engine, Manny trans, Manny 1-ton front end, 73 23ft with a side bath getting some updates-both living in Las Vegas

[Updated on: Sun, 01 July 2018 00:07]

Report message to a moderator

 
Read Message icon2.gif
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: [GMCnet] Posting photos on the net
Next Topic: Leak in air line
Goto Forum:
  


Current Time: Fri Jun 28 09:30:42 CDT 2024

Total time taken to generate the page: 0.00690 seconds