If a dual plane intake works okay with a carb then it will work okay with a throttle body setup like a Sniper. Next time you see someone on a forum saying a throttle body won't work on a dual plane intake ask to see their test data. A lot of people just repeat stuff they heard but they don't actually test anything themselves.
Yep, I was going by things I have read which clearly I was misinterpreting. You know I've been asking a lot of questions about the Sniper. For whatever reason, that idea about needing a single plane intake was stuck in my head. That particular question comes up a lot though, right or wrong.
Regardless, I went back and read up on this some more to make sure I understood the facts better. Holley does not 'recommend' a single plane to work with the Sniper so I stand corrected on that. If you read the Sniper Quick Start Guide, under engine requirements (first section) it says right there in black and white;
Engine Requirements
Before moving forward with the installation, please verify your vehicle meets these engine and fuel system requirements
Engine is in sound mechanical condition
Engine horsepower is between 200 -650 hp
Engine is a naturally aspirated (no supercharger, turbocharger, etc.) 4, 6 or 8 cylinder
Engine has a 4 barrel, 4150 style flange intake manifold*
Unleaded fuel only
Any RTV silicone sealants used on the engine are sensor safe
*Any 4150 flange intake manifold will work. Make sure to use proper gaskets to seal the throttle body to the intake manifold and ensure that there are no vacuum leaks."
Guess that should answer the question fairly definitively. That little bit of info is essentially telling you that however your combo was pieced together,
as long as it's working OK before you put the Sniper on then the style of intake wont matter. If you build your combo to work best with a dual plane intake, for all intents and purposes, the Sniper won't care. Case in point, the OP's combo seems to be just fine with that intake.
The one thing I did see a lot when I went back and read some more is that many do use a spacer. Cutting down a dual plane intake divider also seems to be common practice in relation to installing a Sniper but I'm not sure exactly how you would determine its necessary. Like the intake question, I suppose if it was needed before the Sniper then the same would apply. Or perhaps if the divider was full height then it may interfere with something on the throttle body baseplate? I dunno. I won't wager any guess as far as air velocity, intake signal, plenum volume etc. Maybe it doesn't matter unless your application presents some condition that could only be resolved by milling the divider down. Perhaps a spacer would eliminate whatever issues the full height divider was causing anyway.
