I love my Howell EFI

[Larry Davick]

Okay, I haven’t been very active here lately - frankly I’ve finally finished my bachelor’s degree at the tender age of 56! Needless to say we’ve been watching our nickels while I’m in school, so the GMC just hasn’t gotten any love. I have it parked at a friends house and go to make sure it’s not a rusted hulk from time-to-time. My Costco battery cranks the motor and the Howell EFI with electronic distributor ALWAYS starts the engine after about 3 revolutions. It’s amazing.
I know it will need some fine tuning, and I still have to fix the transmission vacuum modulator (no 3rd gear), but once I get back to work I expect we’ll be putting her back on the road in earnest.
No comment or information about other EFI setups - I suspect they are very good too - but my experience with the Howell and all the help offered here has been over the top positive.
The 455 burbles like and old Cutlass 4-4-2 and there is never a peep once you turn off the ignition.
My left (driver’s) side air-bag droops over time but pumps up after 15 minutes, or so, but otherwise I just love this coach.
I can’t wait to get back on the road!

Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA
Howell EFI + EBL + Electronic Distributor

 

[jim kanomata1]

Larry,
You have the EBL system with the full electronically controlled distributor.
Your unit is a turn key operation like all the other ones we supply.
Should you have any concern, let me know.

> Okay, I haven’t been very active here lately - frankly I’ve finally
> finished my bachelor’s degree at the tender age of 56! Needless to say
> we’ve been watching our nickels while I’m in school, so the GMC just hasn’t
> gotten any love. I have it parked at a friends house and go to make sure
> it’s not a rusted hulk from time-to-time. My Costco battery cranks the
> motor and the Howell EFI with electronic distributor ALWAYS starts the
> engine after about 3 revolutions. It’s amazing.
> I know it will need some fine tuning, and I still have to fix the
> transmission vacuum modulator (no 3rd gear), but once I get back to work I
> expect we’ll be putting her back on the road in earnest.
> No comment or information about other EFI setups - I suspect they are very
> good too - but my experience with the Howell and all the help offered here
> has been over the top positive.
> The 455 burbles like and old Cutlass 4-4-2 and there is never a peep once
> you turn off the ignition.
> My left (driver’s) side air-bag droops over time but pumps up after 15
> minutes, or so, but otherwise I just love this coach.
> I can’t wait to get back on the road!
>
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, CA
> Howell EFI + EBL + Electronic Distributor
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[Larry Davick]

Jim,

I will call you as soon as I’m convinced I’ve totally screwed it up! You and your team were so helpful getting this installed, even with my poor shade-tree skills. We are so very lucky to have you on our team!

Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA
Howell EFI + EBL + Electronic Distributor

>
> Larry,
> You have the EBL system with the full electronically controlled distributor.
> Your unit is a turn key operation like all the other ones we supply.
> Should you have any concern, let me know.
>

>
>> Okay, I haven’t been very active here lately - frankly I’ve finally
>> finished my bachelor’s degree at the tender age of 56! Needless to say
>> we’ve been watching our nickels while I’m in school, so the GMC just hasn’t
>> gotten any love. I have it parked at a friends house and go to make sure
>> it’s not a rusted hulk from time-to-time. My Costco battery cranks the
>> motor and the Howell EFI with electronic distributor ALWAYS starts the
>> engine after about 3 revolutions. It’s amazing.
>> I know it will need some fine tuning, and I still have to fix the
>> transmission vacuum modulator (no 3rd gear), but once I get back to work I
>> expect we’ll be putting her back on the road in earnest.
>> No comment or information about other EFI setups - I suspect they are very
>> good too - but my experience with the Howell and all the help offered here
>> has been over the top positive.
>> The 455 burbles like and old Cutlass 4-4-2 and there is never a peep once
>> you turn off the ignition.
>> My left (driver’s) side air-bag droops over time but pumps up after 15
>> minutes, or so, but otherwise I just love this coach.
>> I can’t wait to get back on the road!
>>
>> Larry Davick
>> A Mystery Machine
>> 1976(ish) Palm Beach
>> Fremont, CA
>> Howell EFI + EBL + Electronic Distributor
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk
> 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

 

[george beckman]

> I know it will need some fine tuning, and I still have to fix the transmission vacuum modulator (no 3rd gear), but once I get back to work I
> expect we'll be putting her back on the road in earnest.

Larry,

I have had great luck with my EBL as well.

The transmission not shifting up may only be a vacuum leak. The modulator reacts to vacuum and a crack in the hose at the modulator or above at the
intake manifold can cause no third gear. When my hose at the modulator developed a crack, my transmission would not shift up until I reached about
55mph. Then the shift was forced by the governor.

Check the tubes for cracks.
--
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George

 

[Ken B]

Also check the steel tube running on the passenger side of the intake manifold from front to rear for an obstruction. They occasionally get clogged
up and then there is no vacuum at the modulator.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana