Home » Public Forums » GMCnet » [GMCnet] Anyone have guess of the # of GMC's with EFI?
| [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340029] |
Wed, 09 January 2019 17:02  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
|
Senior Member |
|
|
I think it's a lot. I put my installation off way too long. Someone asked me if EFI is a necessary upgrade. I truly can't say that any upgrade is truly NECESSARY. My list of upgrade that I LIKE are. EFI with spark control, 3:70 FD, greaseable front wheel bearings without taking the bearings apart, front rear axle disc brakes, and a Sanden A/C compressor. Bob Dunahugh 78 Royale
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
|
|
| Re: [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340032 is a reply to message #340029] |
Wed, 09 January 2019 17:57  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
|
Senior Member |
|
|
I worked on a modified GMC Coach a few years ago that had a 455 Olds that
was extensively modified. It had a Howell EBL installed that was never
"optimized" for the extensive modifications that had been done. The owner
was not completely happy with the way it ran. I agreed to look at the coach
to see if I could do anything with it.
The first thing I noticed was the throttle had a bunch of slack in it
that had to be taken up before any change in engine speed. Upon close
inspection, the inner throttle cable was too long, but if I shortened it
up, it would not open fully. So, I fabricated an adjustable outer cable
retainer that could be moved fore and aft to optimize the movement and
still reach wide open throttle. The installer had installed a return spring
that rivaled a hood spring. It was very difficult to press. A stock
quadrajet double spring cured that. The engine had a "flat spot" at low
speed that was not acceptable. A few phone calls to Howell proved some
help, but, "no cigar". Then, I called Randy VanWinkle and Bob R. at EBL.
They guided me through several "binfile" changes, and with my trusty laptop
and numerous drive tests, we woke that 455 up.
Really, on dry smooth level asphalt, it would burn the tires all
through 1st gear, chirp 'em on both of the other shifts. 3:55 final drive,
stock size tires on Alcoa wheels. Never checked fuel economy. The customer
always towed a car, and never complained about a lack of power. That is a
good outcome in my opinion. Your results may vary.
Jim Hupy
On Wed, Jan 9, 2019, 3:03 PM Bob Dunahugh I think it's a lot. I put my installation off way too long. Someone asked[/color]
> me if EFI is a necessary upgrade. I truly can't say that any upgrade is
> truly NECESSARY. My list of upgrade that I LIKE are. EFI with spark
> control, 3:70 FD, greaseable front wheel bearings without taking the
> bearings apart, front rear axle disc brakes, and a Sanden A/C compressor.
> Bob Dunahugh 78 Royale
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
| Re: [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340040 is a reply to message #340029] |
Thu, 10 January 2019 00:07 |
Scott Nutter
Messages: 782
Registered: January 2015
Location: Houston/San Diego
Karma: 4
|
Senior Member |
|
|
I'm going to take a wild guess and say 20% have EFI. But out of that 20%, how many have Howell vs throttle body bolt on's?
Scott.
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI
Houston, Texas
|
|
|
|
| Re: [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340041 is a reply to message #340040] |
Thu, 10 January 2019 00:34 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
|
Senior Member |
|
|
Jim K has sold a bunch of Howell systems. If he sees this, he may have a
good idea how many are out there. Several GMC Cascaders have home brewed
systems, made up from a mix of recycled and new pieces and salvaged
harnesses with some Howell harnesses. Lots of them use Musgrove prom chips
rather than the EBL. They run well, once debugged initially.
Jim Hupy
On Wed, Jan 9, 2019, 10:08 PM Scott Nutter I'm going to take a wild guess and say 20% have EFI. But out of that[/color]
> 20%, how many have Howell vs throttle body bolt on's?
> Scott.
> --
> Scott Nutter
> 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final
> drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
> installed MSD Atomic EFI
> Houston, Texas
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
|
|
| Re: [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340043 is a reply to message #340041] |
Thu, 10 January 2019 00:46 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
|
Senior Member |
|
|
We have sold at least 50 Howell based unit with the EBL Flash ECM
Very trouble free with good gas mileage .
All the MSD,sniper and FiTech we sold , customers are disappointed with
mileage .
You need timing control program that was done by Bob Musgrove.
Complete with rebuilt full electronic distributor $ 2,300
There are over 300 out there with variations .
There are several people that help support them for us, so they are better
than any techs at company.
On Wed, Jan 9, 2019 at 10:31 PM James Hupy wrote:
> Jim K has sold a bunch of Howell systems. If he sees this, he may have a
> good idea how many are out there. Several GMC Cascaders have home brewed
> systems, made up from a mix of recycled and new pieces and salvaged
> harnesses with some Howell harnesses. Lots of them use Musgrove prom chips
> rather than the EBL. They run well, once debugged initially.
> Jim Hupy
>
> On Wed, Jan 9, 2019, 10:08 PM Scott Nutter
>> I'm going to take a wild guess and say 20% have EFI. But out of that
>> 20%, how many have Howell vs throttle body bolt on's?
>> Scott.
>> --
>> Scott Nutter
>> 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21
> final
>> drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
>> installed MSD Atomic EFI
>> Houston, Texas
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
|
|
|
|
| Re: [GMCnet] Anyone have guess of the # of GMC's with EFI? [message #340046 is a reply to message #340043] |
Thu, 10 January 2019 06:43 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
|
Senior Member |
|
|
jimk wrote on Thu, 10 January 2019 01:46
There are several people that help support them for us, so they are better
than any techs at company.
That is one of the reasons why why I have a GMC and not a SOB.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
|
|
|
|
Goto Forum:
Current Time: Thu Sep 19 16:08:05 CDT 2024
Total time taken to generate the page: 0.00747 seconds
|
GMCforum
Search
Help
Register
Login
Home
