Goodbye Edelbrcok Carb, Hello Holley TBI! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2B32 · 01-24-2017, 12:01 PM

After weeks of tinkering with my carburetor, I have made my carb settings worse and better, but I just can't get it right. I know some guys on here can tune carbs in their sleep, but I lack the skill set, and patience, to tune my carb well on my own. So, I've decided to upgrade to a Holley Sniper TBI. I want something I can jump in and drive anytime without worrying about it, and this seems to be the best semi-budget friendly option.

onebigjohn · 01-24-2017, 12:14 PM

Quote:

Originally Posted by 2B32

After weeks of tinkering with my carburetor, I have made my carb settings worse and better, but I just can't get it right. I know some guys on here can tune carbs in their sleep, but I lack the skill set, and patience, to tune my carb well on my own. So, I've decided to upgrade to a Holley Sniper TBI. I want something I can jump in and drive anytime without worrying about it, and this seems to be the best semi-budget friendly option.

I'm going to follow this.....
I have been looking into the Endelbrock TBI and FI-Tech also both are more money. Cant wait. Please post the pics!

weq92f · 01-24-2017, 12:41 PM

While I don't have direct experience with this TBI setup ( Holley ), I have some with MSD's offering.

I suggest you get the Master kit containing everything you need. That is, unless you already have a high pressure, electric fuel pump and all the plumbing for a return line and regulator installed. This way, Holley will support and troubleshoot your entire system.

If possible, build it out so you can attach and run the "hand held" programmer inside the cab while driving.

Use an anti-heat-soak spacer between TBI and intake.

Good luck and happy EFIn,

-klb

2B32 · 01-24-2017, 01:03 PM

I plan to get the master kit, but they are currently on backorder so I'll have to wait 2-3 weeks.

Z10 · 01-24-2017, 01:29 PM

I also have a little experience with FI. I installed a F.I.R.S.T. TPI unit about two years ago and now have 10k miles of trouble free driving on it. You can see the install on my build thread below. I think you'll find from a cost perspective it compares very well with Holley MSD, Fast, etc.

https://www.firstfuelinjection.com

I also have a FiTech TBI installed on my 69 Camaro and it's working just fine also. It's pretty straight forward and less expensive.

http://fitechefi.com

James the III · 01-25-2017, 09:27 PM

Quote:

Originally Posted by Z10

https://www.firstfuelinjection.com

If it was not for the crazy cost for a TPI vortec intake .I'd be doing this as the TPI makes killer torque and would go with my ramjet cammed vortec350 nicely.

power under the curve is where it's at on a truck

Tdrcreyn4 · 01-24-2017, 03:10 PM

subbed

kenmosher · 01-24-2017, 05:26 PM

Another quick tip ...

Do the fuel injection piece first and get it tuned out a bit before adding in the ignition timing function (you also need a compatible distributor like the Holley Dual Sync or one of the MSD Magnetic pickup Dizzies that have the output for the trigger.

It's much easier to get the FI part up and running and THEN add in the ignition piece to "fine tune" things. You'd be surprised how much the ignition piece can help with idle and part throttle stuff.

el_fantasma · 01-25-2017, 01:03 AM

Subscribed

James the III · 01-25-2017, 11:55 AM

Quote:

Originally Posted by kenmosher

Another quick tip ...

Do the fuel injection piece first and get it tuned out a bit before adding in the ignition timing function (you also need a compatible distributor like the Holley Dual Sync or one of the MSD Magnetic pickup Dizzies that have the output for the trigger.

It's much easier to get the FI part up and running and THEN add in the ignition piece to "fine tune" things. You'd be surprised how much the ignition piece can help with idle and part throttle stuff.

I'd check.. as I'd think the truck vortec oem distributor or computer controlled hei could be used..

ARCTICFRONTIER · 01-25-2017, 01:10 AM

Subscribed! I'm really interested in a Holley Sniper as well. Curious to see some of your thoughts on the system.

MLB57 · 01-25-2017, 11:49 AM

Posted via Mobile Device

MLB57 · 01-25-2017, 11:52 AM

I can suggest that if you are replacing the intakes a single plane that is what Holley recommends and I had to add a 1" spacer on my dual plane to get any kind of idle quality. Make small adjustments as you go
Posted via Mobile Device

MLB57 · 01-25-2017, 08:16 PM

They stopped recommending the small cap and msd. distributors having compatibility problems. Check out the Holley forum on terminator there is a lot of good information
Posted via Mobile Device

2B32 · 02-25-2017, 10:09 PM

Quick update.

My kit arrived this week, so I pulled the carb today. I noticed the vacuum line into the Sniper was hitting the vacuum fitting running from the brake booster. I tried to seat the fitting a little more to make clearance and cracked my intake. So, now I have a bunch of new parts just laying around until I can get a new intake. Aside from the major suck of cracking my intake I learned someone did a horrible job of seating the old intake, and even used some sort of liquid sealant in places. It's a setback for sure, but it's not the end of the world.

RUN GMC · 02-25-2017, 10:32 PM

Quote:

Originally Posted by 2B32

Quick update.

My kit arrived this week, so I pulled the carb today. I noticed the vacuum line into the Sniper was hitting the vacuum fitting running from the brake booster. I tried to seat the fitting a little more to make clearance and cracked my intake. So, now I have a bunch of new parts just laying around until I can get a new intake. Aside from the major suck of cracking my intake I learned someone did a horrible job of seating the old intake, and even used some sort of liquid sealant in places. It's a setback for sure, but it's not the end of the world.

Pardon the expression, seems like a lucky break for you....efi is sensitive to excess air affecting the true oxygen reading.....believe your fine turning would have been effected.....when I get my Holley Sniper set up Im going to pull the intake and make sure gaskets and sealant are properly done and add exhaust gaskets too.......

**68bowtie** · 02-26-2017, 01:21 PM

interesting. is the sniper kit applicable to a gen IV 396 with a moderate street cam and a performer intake? i was planning on a 750 carb with elec choke and vac secondaries. what specifically will the viper kit add/detract from that setup?

TheRocket · 03-30-2017, 01:07 PM

Not only no, BUT HELL NO, do not buy anything from F.A.S.T., aka Fuel, Air, Spark Technology aka EZ-EFI.

2B32 · 04-14-2017, 09:59 AM

Another update.

I got my idle issues resolved and set my Sniper parameters to Holley specs at hot idle. Timing is 11° BTDC, IAC +/- 5%, Hot Idle bounces around 850 RPM +/- 30. I went for a test drive and it seemed to be running well until the engine reached about 175°. After the engine got hot it started cutting out/sputtering/lurching under acceleration. If I kicked in into neutral it seemed to smooth out, but I would have to rev the engine much higher than normal and ease the clutch real slow to take off again. Even then it would cut out/sputter/lurch to get going again; it even died a couple of times. On restart, it would crank but it would not fire up right away like it did cold, and I would have to depress the gas pedal slightly to get it to fire (from what I understand I should not have to do that with EFI). I let it sit and cool off, then repeated the process a couple more times. I have a datalog of my last drive. I can view the log, but anytime I try to upload it to a forum I get an "invalid file" error.

Any idea what's causing my driveability issue?

01-24-2017, 12:01 PM	#1
2B32 Registered User Join Date: Jun 2015 Location: Northeast Missouri Posts: 71	Goodbye Edelbrcok Carb, Hello Holley TBI! After weeks of tinkering with my carburetor, I have made my carb settings worse and better, but I just can't get it right. I know some guys on here can tune carbs in their sleep, but I lack the skill set, and patience, to tune my carb well on my own. So, I've decided to upgrade to a Holley Sniper TBI. I want something I can jump in and drive anytime without worrying about it, and this seems to be the best semi-budget friendly option.

01-24-2017, 12:41 PM	#3
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,229	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! While I don't have direct experience with this TBI setup ( Holley ), I have some with MSD's offering. I suggest you get the Master kit containing everything you need. That is, unless you already have a high pressure, electric fuel pump and all the plumbing for a return line and regulator installed. This way, Holley will support and troubleshoot your entire system. If possible, build it out so you can attach and run the "hand held" programmer inside the cab while driving. Use an anti-heat-soak spacer between TBI and intake. Good luck and happy EFIn, -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

01-24-2017, 01:03 PM	#4
2B32 Registered User Join Date: Jun 2015 Location: Northeast Missouri Posts: 71	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! I plan to get the master kit, but they are currently on backorder so I'll have to wait 2-3 weeks.

01-24-2017, 01:29 PM	#5
Z10 Registered User Join Date: Aug 2012 Location: Midland, TX Posts: 1,267	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! I also have a little experience with FI. I installed a F.I.R.S.T. TPI unit about two years ago and now have 10k miles of trouble free driving on it. You can see the install on my build thread below. I think you'll find from a cost perspective it compares very well with Holley MSD, Fast, etc. https://www.firstfuelinjection.com I also have a FiTech TBI installed on my 69 Camaro and it's working just fine also. It's pretty straight forward and less expensive. http://fitechefi.com Attached Images __________________ 1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i

01-24-2017, 03:10 PM	#7
Tdrcreyn4 Registered User Join Date: Aug 2013 Location: Atlanta, GA Posts: 702	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! subbed __________________ 1968 C10 292/3 spd - sold 1969 K10 350/3 spd/205 - sold 1971 K5 350/4 spd/ 205 - sold 1970 K20 350/350/205 - sold 1969 K20 396/400/205 - work in process

01-24-2017, 05:26 PM	#8
kenmosher Registered User Join Date: Sep 2016 Location: Colorado Posts: 5	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Another quick tip ... Do the fuel injection piece first and get it tuned out a bit before adding in the ignition timing function (you also need a compatible distributor like the Holley Dual Sync or one of the MSD Magnetic pickup Dizzies that have the output for the trigger. It's much easier to get the FI part up and running and THEN add in the ignition piece to "fine tune" things. You'd be surprised how much the ignition piece can help with idle and part throttle stuff.

01-25-2017, 01:03 AM	#9
el_fantasma Registered User Join Date: Oct 2016 Location: Redwood City CA Posts: 566	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Subscribed __________________ 72 White Cheyenne, The Ghost

01-25-2017, 01:10 AM	#11
ARCTICFRONTIER Registered User Join Date: May 2012 Location: Regina, SK Posts: 101	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Subscribed! I'm really interested in a Holley Sniper as well. Curious to see some of your thoughts on the system.

01-25-2017, 11:49 AM	#12
MLB57 Registered User Join Date: Sep 2011 Location: olathe kansas Posts: 238	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Posted via Mobile Device

01-25-2017, 11:52 AM	#13
MLB57 Registered User Join Date: Sep 2011 Location: olathe kansas Posts: 238	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! I can suggest that if you are replacing the intakes a single plane that is what Holley recommends and I had to add a 1" spacer on my dual plane to get any kind of idle quality. Make small adjustments as you go Posted via Mobile Device

01-25-2017, 08:16 PM	#14
MLB57 Registered User Join Date: Sep 2011 Location: olathe kansas Posts: 238	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! They stopped recommending the small cap and msd. distributors having compatibility problems. Check out the Holley forum on terminator there is a lot of good information Posted via Mobile Device

02-25-2017, 10:09 PM	#15
2B32 Registered User Join Date: Jun 2015 Location: Northeast Missouri Posts: 71	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Quick update. My kit arrived this week, so I pulled the carb today. I noticed the vacuum line into the Sniper was hitting the vacuum fitting running from the brake booster. I tried to seat the fitting a little more to make clearance and cracked my intake. So, now I have a bunch of new parts just laying around until I can get a new intake. Aside from the major suck of cracking my intake I learned someone did a horrible job of seating the old intake, and even used some sort of liquid sealant in places. It's a setback for sure, but it's not the end of the world.

02-26-2017, 01:21 PM	#17
68bowtie Senior Member Join Date: Jan 2007 Location: Turlock, CA Posts: 8,803	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! interesting. is the sniper kit applicable to a gen IV 396 with a moderate street cam and a performer intake? i was planning on a 750 carb with elec choke and vac secondaries. what specifically will the viper kit add/detract from that setup? __________________ Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Thank you all so far you are angels!! Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD

03-30-2017, 01:07 PM	#18
TheRocket Registered User Join Date: Mar 2016 Location: Goodwell, OK Posts: 63	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Not only no, BUT HELL NO, do not buy anything from F.A.S.T., aka Fuel, Air, Spark Technology aka EZ-EFI.

04-14-2017, 09:59 AM	#19
2B32 Registered User Join Date: Jun 2015 Location: Northeast Missouri Posts: 71	Re: Goodbye Edelbrcok Carb, Hello Holley TBI! Another update. I got my idle issues resolved and set my Sniper parameters to Holley specs at hot idle. Timing is 11° BTDC, IAC +/- 5%, Hot Idle bounces around 850 RPM +/- 30. I went for a test drive and it seemed to be running well until the engine reached about 175°. After the engine got hot it started cutting out/sputtering/lurching under acceleration. If I kicked in into neutral it seemed to smooth out, but I would have to rev the engine much higher than normal and ease the clutch real slow to take off again. Even then it would cut out/sputter/lurch to get going again; it even died a couple of times. On restart, it would crank but it would not fire up right away like it did cold, and I would have to depress the gas pedal slightly to get it to fire (from what I understand I should not have to do that with EFI). I let it sit and cool off, then repeated the process a couple more times. I have a datalog of my last drive. I can view the log, but anytime I try to upload it to a forum I get an "invalid file" error. Any idea what's causing my driveability issue?



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