Holley Sniper with a performance camshaft

[@krisandkristi75]

I just built a 496 with a slightly larger cam. This video saved me some guessing while getting this thing figured out. Thank you for posting this.

[@s30blazer]

thank you, I will be making reference to this in a few weeks when I get my 454 setup, last year, it ran, but never ran well, I was told to get a HYPER SPARK to make adjustments. Then as I was installing the HYPER SPARK, I was getting a lot of RF interference.

[@cfmechanic]

I really appreciate you posting this info. I was able to use some of these tricks on my sbc 440. I had it close but after modifying timing and afr it seemed to wake it up. Still have some noise around cruise 2400-2700 rpm sounds kinda like detonation but it's not likely due to the way car runs, I think it's just lifter noise related to ramp of cam or possibly the injectors, have always had the noise no smoke or other detonation issues and motor has over 10k miles since last tear down.

[@andyfinkbeiner]

Thanks for the note. A Sniper needs a little bit of tweaking to work with a big cam. Typically you need to add idle timing and make the AFR a little richer but every engine is different.

[@motovick]

Thanks, do you know if the cam setting has an hidden impact on acceleration enrichment? I have a terminator stealth system and ae from idle remain extremly rich no matter what i do to the ae and or fuel map settings.

[@maximeaugier6307]

Thanks !

[@michaelparadisis4076]

Excellent video thank you for doing. I have a pump has 582 BB Chevy. Made 870 hp on dyno.273/283 at .050 and it’s idle isn’t happy particularly in Park. Idle in Drive isn’t bad. It’s also difficult start when engine is warm. I have cam selected at street/strip and IAC is always at 25-30. Frustrating. I may select ‘stock cam’ and see how it goes. I have MSD distributor with 6AL , timing set at 28 idle and 34 degrees all in by 2800 rpm. Any other suggestions will be most appreciated.

[@andyfinkbeiner]

A Hyperspark distributor would be a good investment. You can lower the IAC number by turning in the idle screw a small amount. Maybe half a turn or so. Idle in park and drive can take some work depending on the converter. The higher the idle speed the easier it is to get them dialed in. Once it is dialed in then you can reduce the idle speed a little bit at a time and make adjustments.

[@m.pietro9087]

Good tips. Thank you for sharing.

[@andyfinkbeiner]

Thanks for watching!

[@zakzima9160]

Andy, I'm gonna to be going this route. I'm planning on a 500 for the car. But right now, it's going to have 12:1 383, with a 590 purple shaft. Looking at buying the hyperspark, is it good to run a digital 6+ with this? Thanks for the video! I'm probably going to be lost..lol

[@andyfinkbeiner]

I wouldn't buy a Digital 6+ since it has features that you don't need. If you're buying a new box then buy a 6EFI or the Hyperspark box

[@zakzima9160]

@andyfinkbeiner7371 ok, it's just what I have currently, will that distributor work with it? New to this I guess, will I need to buy a crank trigger?

[@chazzed4]

That's almost my exact combo. Any way I could get this gcf?

[@andyfinkbeiner]

I've posted my GCF on the Holley Sniper forum a couple of times. Also have some data logs out there.

[@cedchevy]

@@andyfinkbeiner can you tag us with the gcf