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 #333732 is a reply to message #333724] |
Tue, 19 June 2018 22:04   |
mrgmc3
Messages: 210
Registered: September 2013
Location: W Washington
Karma:
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Sounds like you really want to try 80s electronic controls on your GMC. FYI the Olds V8 continued in 307 cu in displacement through 1990 in some full size GM cars. These later years all have electronic quadrajets and HEI. I don't know if they had knock sensor control.
For what it is worth I'd stick with the OE quadrajet. They are incredibly tunable and if you are familiar with other carbs you can learn quadrajets as there are a few good books devoted to the subject such Doug Roe's book. The later years (76-78) have adjustable part throttle (APT) metering. Between primary jetting, primary rods (the GMCs are a special triple taper), secondary rods, primary power piston springs and the APT the Q-jet can be dialed in quite satisfactorily. It just takes a linear lambda gauge, an assortment of jets and rods and careful note taking. The only downside relative to fuel injection is the lack of altitude compensation. I may get some argument over this last point, but there are many here who will agree that the q-jet is actually pretty darn good in terms of performance and economy.
Chris Geils - Twin Cities / W Wa
1978 26' Kingsley w/ very few mods; PD9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, Alcoas, 54k mi
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Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 00:48 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 15:12 |
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 16:15 |
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 18:00 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 19:59 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: mrgmc3 on Tue, 19 June 2018 22:04 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 19 June 2018 22:34 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Wed, 20 June 2018 12:52 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Thu, 21 June 2018 12:05 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Sat, 30 June 2018 23:03 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Sun, 01 July 2018 02:37 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Sun, 01 July 2018 08:36 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
By: jimk on Sun, 01 July 2018 10:13 |
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Sun, 01 July 2018 16:21 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control
By: jimk on Sun, 01 July 2018 19:16 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Sun, 01 July 2018 19:14 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 03 July 2018 03:53 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 03 July 2018 10:18 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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Re: Electronic QuadraJet and factory Electronic Spark Control
By: GMC2000 on Tue, 03 July 2018 17:57 |
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Re: Electronic QuadraJet and factory Electronic Spark Control
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