Holley Sniper vs. Fitech throttle body efi dragstrip results - Chevelle Tech
EFI Caution: Beyond here be monsters...

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post #1 of 19 (permalink) Old Nov 12th, 16, 5:15 PM Thread Starter
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Bob
 
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Thumbs up Holley Sniper vs. Fitech throttle body efi dragstrip results

Quick history...

With Quick Fuel carb, 4.10 gears, and 4200+ stall, my 4200# car has been 11.31@117 mph.

With CARB, 4200+ stall, 3.90's, it has been a best of 11.43@116

With CARB, 3.08 gears, and 4200+ stall, best ever was an 11.77@114....

Then came FITECH EFI and with 3.08's, the 1st pass with 4200+ stall, car went 11.75@115....which I was pretty dang happy with...but the next day, the trusty old Freakshow converter imploded....

Went with a 3300 stall and swapped the 3.90 gears back in...

Best ever with Fitech, 3300 stall, and 3.90 gears was 11.72@115....Again, BEST EVER....after 10 months of "learning"...
I attributed the slower ET entirely to the tighter converter....

Today, first time to track with the Holley Sniper EFI, and first couple passes, spun hard, let off, then back into it for piss-poor 11.9x's...but 116mph, 3 passes, and a still crappy 11.87...but was fastest MPH with any efi so far...

Prayed for some traction...

Finally spun just a little, but stayed in it, and went an 11.65@116, but only a 1.68 sixty foot...

So now I KNOW the car can go quicker....if it will hook....

Next pass, finally hooked decent...
11.51@116 (1.60 sixty foot)...

Made 3 more passes, but spun every time....got mad and loaded it up....track was just junk today....so saved it for another day...

Cliff Notes:
Best ET/ MPH with Fitech: 11.72@115

Best ET/MPH with Holley: 11.51@116

Car sounded as smooth as it ever has...revved clean, no issues to speak of....I did get a few datalogs, but still have no idea how to actually view them...lol.

Gonna try to attach an incar video, taken with my phone, so excuse the shakiness...

https://youtu.be/Z0GujnG2sDE
.
.

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #2 of 19 (permalink) Old Nov 12th, 16, 6:03 PM
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Allen
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results



Thanks for the update.
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post #3 of 19 (permalink) Old Nov 13th, 16, 9:42 AM
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John
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

THANK YOU! For us who are a bit more "green" at the EFI stuff, this is just what we like to see.

Too bad most of these systems are for low Hp motors? And when FiTech does the higher Hp kits, you get to deal with theFiTech issues.

Also, I'm totally confused on the CFM rating? My motor on the dyno was choked at 6400RPM with a modified HP1000 carb. and this was only "around 7-750Hp. So how can FiTech have a single TB that's for there 1200Hp kit, that flows the same air as the 600Hp kit???

I really with Holley would do a 1000Hp TB kit, like FiTech does, and offer the flexibility to run a second TB on it if you wish, like for a tunnelram.
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post #4 of 19 (permalink) Old Nov 13th, 16, 9:54 AM Thread Starter
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Thumbs up Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

John, Holley also has a 1250 hp version coming out soon, and I "thought" (not 100% sure) that Doug F had said the Holley could be used in a tunnel ram application? Like I said though, not sure.

I really hope they step it up with the release of their software, so I can actually read the datalogs, and access the other features I want to use...

My car felt great and only had 2 days (maybe 4 hours total) of "learning" , with only 1 WOT "learn session" done before the dragstrip runs yesterday...

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #5 of 19 (permalink) Old Nov 13th, 16, 10:12 AM
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Chris
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Awesome Bob!
That's always a plus, better running AND quicker!
Was the DA and weather the same as the FITech?
You keep this stuff up, my son "may" get my meanstreet! LOL!

Also, please give us increments of time slips to see where you gained the most.

73 nova,3515#(all steel)406ci N/A, best 1/4,1.45 '60,6.75@100.48,10.6 @ 122.38, short shifting,NO tuning!

http://www.youtube.com/watch?v=ng86PsGUcTY
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post #6 of 19 (permalink) Old Nov 13th, 16, 10:14 AM
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Chris
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by EZ Nova View Post
THANK YOU! For us who are a bit more "green" at the EFI stuff, this is just what we like to see.

Too bad most of these systems are for low Hp motors? And when FiTech does the higher Hp kits, you get to deal with theFiTech issues.

Also, I'm totally confused on the CFM rating? My motor on the dyno was choked at 6400RPM with a modified HP1000 carb. and this was only "around 7-750Hp. So how can FiTech have a single TB that's for there 1200Hp kit, that flows the same air as the 600Hp kit???

I really with Holley would do a 1000Hp TB kit, like FiTech does, and offer the flexibility to run a second TB on it if you wish, like for a tunnelram.
I "think" they do. It's 950cfm and it's the terminator kit.
I'm sure doug will correct me if I'm wrong.
Whoops! I thought you meant cfm.
My bad.

73 nova,3515#(all steel)406ci N/A, best 1/4,1.45 '60,6.75@100.48,10.6 @ 122.38, short shifting,NO tuning!

http://www.youtube.com/watch?v=ng86PsGUcTY
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post #7 of 19 (permalink) Old Nov 13th, 16, 10:16 AM
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John
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Well that's even better. Because having $15,000 tied up in 4 4150 and 4 4500 series carbs SUCK. When one has $8,000 invested in 2 carbs because you built a motor that requires large CFM, it get pricey FAST. And thinking about putting the cars on the street, the EFI would be the key. YES I could go full-blown FAST or BS3 with injector bung etc, but the "look" would be off for my taste. Putting injector "bungs" into a '198 intake on my '69 ZL-1 just totally defeates the "stock-look" build! BUT the 1200 Hp from Holley would certainly fit the bill.

Dyno'ing the ZL-1 today. If it comes off dyno with the power were looking for, AND NOT BROKEN, then will move onto a L-78 and the "Polishing Sneakers". Hope to get to my ZLX 480 nostalgia motor by Feb. THAT's the one that would be either single or switching to 2X4's here and there as they came with both.

Hopefully Doug F updates us.

Thanks
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post #8 of 19 (permalink) Old Nov 13th, 16, 10:27 AM
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Allen
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

I asked Doug (in another thread) about a dual 4 set up and he said it was part of the plan.

I was thinking a performer rpm air gap dual carb manifold with EFI for a old school look and the benefits of EFI. Although, I might be convinced to go for a street tunnel ram instead.
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post #9 of 19 (permalink) Old Nov 13th, 16, 11:03 AM Thread Starter
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by WHT/73 View Post
Awesome Bob!
That's always a plus, better running AND quicker!
Was the DA and weather the same as the FITech?
You keep this stuff up, my son "may" get my meanstreet! LOL!

Also, please give us increments of time slips to see where you gained the most.
My log book is at work, so increments will have to wait until tomorrow.

The temp was the same...low 50's and Cecil County is always at or slightly below sea level...track was super slippery though. I only hooked that one run...my buddy said the one pass I spun/wheel hopped a little, then mashed it again the left front wheel popped up on the 2nd hit...which it's never done before, but I knew I felt it... I bitch ed him out for not getting a pic...lol

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #10 of 19 (permalink) Old Nov 13th, 16, 11:09 AM Thread Starter
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Thumbs up Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

BTW, on the Holley forums I was told the release date for the software is still "soon"...whatever that is supposed to mean.

I cannot view datalogs without it, nor can I use the nitrous activation, nitrous retard, or launch control or 2 step without it...that kinda sucks, but my hope is that it is just being tweaked before release...

I do intend to use all those features for next season, so I am looking forward to it...

You can hear in the video above that my converter is a bit tight on launch, so a converter swap may be on the "to do" list as well.
.

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
rel3rd is offline  
post #11 of 19 (permalink) Old Nov 13th, 16, 12:03 PM
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Steve
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by rel3rd View Post
BTW, on the Holley forums I was told the release date for the software is still "soon"...whatever that is supposed to mean.
.
If "soon" tracks for the software like it did for the lil' Sniper, it'll be 3 months.

'65 Chev El Camino
350/350+, 700R4
FiTech GoEFI 4 600HP Fuel Injection
Dropped 2.5 - Wannabe Pro Cruzer
'68 P-11 Norton
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post #12 of 19 (permalink) Old Nov 13th, 16, 2:16 PM
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Chris
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by rel3rd View Post
BTW, on the Holley forums I was told the release date for the software is still "soon"...whatever that is supposed to mean.

I cannot view datalogs without it, nor can I use the nitrous activation, nitrous retard, or launch control or 2 step without it...that kinda sucks, but my hope is that it is just being tweaked before release...

I do intend to use all those features for next season, so I am looking forward to it...

You can hear in the video above that my converter is a bit tight on launch, so a converter swap may be on the "to do" list as well.
.
If your spinning now, its only going to get worse with a looser converter, but you already know that.
How long of a burnout did you do?
Might have to increase it to get them a lil stickier and a cold track.
Hows your front end?
Loose?

73 nova,3515#(all steel)406ci N/A, best 1/4,1.45 '60,6.75@100.48,10.6 @ 122.38, short shifting,NO tuning!

http://www.youtube.com/watch?v=ng86PsGUcTY
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post #13 of 19 (permalink) Old Nov 13th, 16, 3:04 PM Thread Starter
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Bob
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by WHT/73 View Post
If your spinning now, its only going to get worse with a looser converter, but you already know that.
How long of a burnout did you do?
Might have to increase it to get them a lil stickier and a cold track.
Hows your front end?
Loose?
I should have clarified...nothing wrong with my car...the track sucked most of the day. Here was the guy about 5 runs before me...
https://youtu.be/Fj6frdmS0cw

My front end consists of delrin bushing'd tubular control arms which have very little to no resistance moving through their arcs. I'd have to look at my printouts, to post specs on instant center, etc., but the rear suspension was plotted out by our own BillyGMan, and setup accordingly. Car always hooks, and even did so with the old 4500 rpm or so flashing converter...but track prep sucked and overnight track temps were in the low 30's.

Basically, any car with any sort of power either spun, or in a stroke of luck, hooked and got a new best...On a normal day at that same track, I'm sure it would have went 11.40's.

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #14 of 19 (permalink) Old Nov 13th, 16, 4:03 PM Thread Starter
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Found video of my 1st (& worst) run....
Thanks to zlumlord for video...

I'm about 40 seconds in or so...

https://youtu.be/XyKCMA5FSQU

.
.
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post #15 of 19 (permalink) Old Nov 14th, 16, 7:58 AM Thread Starter
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Bob
 
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Re: Holley Sniper vs. Fitech throttle body efi dragstrip results

Quote:
Originally Posted by WHT/73 View Post

Also, please give us increments of time slips to see where you gained the most.
Incrementals:

----- FiTech Best --- Holley Best

60' -------- 1.62 ------- 1.60
330' ------- 4.80 ------- 4.70
660' ------- 7.46 ------- 7.31
660' mph - 92.08 ----- 94.07
1000' ------ 9.76 ------- 9.58
1/4 ET ----- 11.72 ----- 11.51
1/4 mph -- 114.75 --- 116.05
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