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Holley sniper intake recommendations

Using a torker 383 on the roadrunner.. But thats what it had on it. It runs fine with it but its not a race car. I have the stock manifold but didnt put it on before the holley Sniper.
 
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I saw the ad on Velocity channel about the sniper and am really interested in this. I have a Victor manifold on my Roadrunner and wonder if that EFI would be worth it.
 
The sniper is equal to the FI Tech bass system.
Better or worse you decide.
Holley has a system that is a step up from the sniper but it is pricey though it does have a higher ceiling of inputs. They can also look like a carb where as the FI Tech and Sniper do not.

Make sure anfuel pump comes with it all.
 
I have installed 2 setups and both people love the ease of use. Both systems had their issues. Holley tps went bad and an O2 sensor went bad on one setup. The other setup was installer error. Had a couple leaks but everything else was plug and play.
 
I'll be installing the sniper hopefully by Q1-Q2 next year.

I'll be using an RPM Performer dual plane ported by Wilson manifold with a 1" tapered spacer.
GUYOYVO.jpg

Going by what I've read on the Sniper forums this setup should work with the EFI and my 383 motor combo.

Working through other things that I'll do at the same time with this new setup, I should have this installed with the current Holley 750 DP by years end so I'll have #'s to compare.
 
I forgot to mention one car has an Edelbrock performer RPM intake.
 
denpsim said:
Is anyone using a RPM airgap and sniper on a 383
Click to expand...

I am. Here is an article I wrote for Car Craft magazine: https://www.hotrod.com/articles/super-sniper-efi-sees-powerful-improvements-data-logging/

After that article was written I switched over to a Trick Flow intake and I added the HyperSpark ignition setup. There should be an article showing up on Hot Rod in the next few days that covers that install.

Here is a link to my '65 on the chassis dyno. This is with the Sniper 650 and the Holley HyperSpark ignition system. It made 485 rwhp.
 
Love my Sniper kit, I've had it on the car since April. Good, better, best scenario says the best solution would be a single-plane intake manifold. Better scenario is a dual-plane with a spacer. Good scenario, dual-plane with the divider machined down.

Enjoy the tech support even more, had an 02 sensor failure this past week. Sent Holley an email, received a reply the following morning. Three emails later, without even asking, Holley already had an 02 sensor being sent my way. It will arrive on Friday. I would probably still be on hold with FiTech support :rolleyes:
 
Sweet running the single do you think it lags a little on the bottom end <3500rpm?
I know there are a lot of other factors that play into it, just curious how the off idle response is.
TY
 
Mike67 said:
Sweet running the single do you think it lags a little on the bottom end <3500rpm?
I know there are a lot of other factors that play into it, just curious how the off idle response is.
TY
Click to expand...

TBI EFI will have instant throttle response, regardless of manifold type. Remember, 58 Psi of fuel pressure flowing through (4) 100 lb/hr injectors directly into the intake tract. The great aspect of TBI over MPFI, is the dense, cool air-fuel charge from maintaining a wet style intake manifold. Engine Masters recently shown a test, displaying a 40* difference in manifold IATs with a carburetor over a Holley Terminator MPFI system (wet vs. dry); which resulted in 6-7 additional HP. Review the first Carburetor vs. EFI Shootout episode and the TBI EFI was dominant in that scenario, wasn't even close without major carburetor tuning.

 
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I wonder if a turtle would help tq.on the low end of a single. plane???
 
Mike67 said:
I wonder if a turtle would help tq.on the low end of a single. plane???
Click to expand...

AndyF has some really good manifold testing articles, without a dyno cell, the benefits will be a tough to realize. Best scenario is looking at the average torque / hp across the rpm range that you're going to be utilizing, selecting an intake manifold that works well in that area.

Here is an article that may help you make a decision, overall, there is a low-spread between the worst and best 'B' series intake manifolds for a typical street / performance engine.
https://www.hotrod.com/articles/hrdp-0712-mopar-intake-manifold-comparo/
 
Sweet5ltr said:
TBI EFI will have instant throttle response, regardless of manifold type. Remember, 58 Psi of fuel pressure flowing through (4) 100 lb/hr injectors directly into the intake tract. The great aspect of TBI over MPFI, is the dense, cool air-fuel charge from maintaining a wet style intake manifold. Engine Masters recently shown a test, displaying a 40* difference in manifold IATs with a carburetor over a Holley Terminator MPFI system (wet vs. dry); which resulted in 6-7 additional HP. Review the first Carburetor vs. EFI Shootout episode and the TBI EFI was dominant in that scenario, wasn't even close without major carburetor tuning.

Click to expand...

I watched that episode, Brule was determined to get that cab tuned to make more power but eventually gave in.
 
Just and fyi, if running a big cam the sniper will operate fine up to 7 inch pounds of vacuum. Anything less you will have to go into the fuel mapping and tweak it, the self learn mode wont accommodate it.
 
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