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Description
Holley 565-310 Sniper EFI HyperSpark Distributor Oldsmobile 307 330 350 400 403Overview: HyperSpark distributors are plug and play with all Holley Sniper EFI systems, featuring a high quality billet distributor housing, hall effect crank trigger sensor, and they come included with the foolproof patented clear installation cap. Hyperspark CD Ignition Box (556 152) and Ignition Coil (556 151) sold separately. Features: Hall Effect crank trigger sensor housing provides a noise free RPM signal to the Sniper ECU Billet distributor
Overview:
HyperSpark distributors are plug and play with all Holley Sniper EFI systems, featuring a high-quality billet distributor housing, hall effect crank trigger sensor, and they come included with the foolproof patented clear installation cap.
Hyperspark CD Ignition Box (556-152) and Ignition Coil (556-151) sold separately.
Features:
- Hall Effect crank trigger sensor housing provides a noise-free RPM signal to the Sniper ECU
- Billet distributor housing provides corrosion resistance and stylish looks!
- Patented Clear Installation cap eliminates any confusion while installing the distributor.
- Easiest plug and play way to add timing control to a Sniper EFI Installation.
- Distributor shutter wheel is pinned and welded to the shaft, for decades of reliable accuracy.
- Includes Wire Retainer for a clean installation.
- Comes with Cast Gear Installed - contact camshaft manufacturer for recommended gear material.
- Designed to be used with Sniper EFI HyperSpark CD box P/N 556-151 and Ignition Coil 556-152
- Available in Black or Shiny Billet Aluminum to match any engine bay
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1972 - 1976 | Oldsmobile | 98 | 455/7.5L V8 | |
| 1968 - 1980 | Oldsmobile | Cutlass Supreme | 350/5.7L V8 | |
| 1978 | Oldsmobile | Cutlass Supreme | Base | 350/5.7L V8 |
| 1972 - 1976 | Oldsmobile | Custom Cruiser | 455/7.5L V8 | |
| 1980 | Oldsmobile | Cutlass Cruiser | 350/5.7L V8 | |
| 1980 - 1990 | Oldsmobile | Custom Cruiser | 307/5L V8 | |
| 1977 | Oldsmobile | Cutlass Salon | 403/6.6L V8 | |
| 1966 - 1974 | Oldsmobile | Toronado | ||
| 1979 - 1980 | Oldsmobile | Toronado | 350/5.7L V8 | |
| 1968 - 1975 | Oldsmobile | Vista Cruiser | 350/5.7L V8 | |
| 1984 | Oldsmobile | Cutlass Calais | Hurst | 307/5L V8 |
| 1977 - 1980 | Oldsmobile | 98 | 350/5.7L V8 | |
| 1977 - 1980 | Oldsmobile | Custom Cruiser | 350/5.7L V8 | |
| 1970 - 1976 | Oldsmobile | Cutlass | 455/7.5L V8 | |
| 1968 - 1980 | Oldsmobile | Delta 88 | 350/5.7L V8 | |
| 1973 - 1979 | Oldsmobile | Omega | 350/5.7L V8 | |
| 1970 - 1975 | Oldsmobile | Vista Cruiser | 455/7.5L V8 | |
| 1969 - 1971 | Oldsmobile | Delta 88 | Base | 350/5.7L V8 |
| 1977 - 1979 | Oldsmobile | 98 | 403/6.6L V8 | |
| 1965 - 1966 | Oldsmobile | Dynamic 88 | ||
| 1965 - 1971 | Oldsmobile | 98 | ||
| 1985 - 1987 | Oldsmobile | Cutlass Salon | 307/5L V8 | |
| 1975 - 1980 | Oldsmobile | Cutlass Salon | 350/5.7L V8 | |
| 1980 - 1985 | Oldsmobile | Toronado | 307/5L V8 | |
| 1968 - 1976 | Oldsmobile | Delta 88 | 455/7.5L V8 | |
| 1970 - 1972 | Oldsmobile | F85 | 455/7.5L V8 | |
| 1969 - 1971 | Oldsmobile | Delta 88 | Base | 455/7.5L V8 |
| 1980 - 1985 | Oldsmobile | Delta 88 | 307/5L V8 | |
| 1965 | Oldsmobile | Jetstar I | ||
| 1982 - 1983 | Oldsmobile | Cutlass Calais | 307/5L V8 | |
| 1968 - 1972 | Oldsmobile | F85 | 350/5.7L V8 | |
| 1980 - 1984 | Oldsmobile | 98 | 307/5L V8 | |
| 1981 - 1983 | Oldsmobile | Cutlass Cruiser | 307/5L V8 | |
| 1977 - 1978 | Oldsmobile | Toronado | 403/6.6L V8 | |
| 1965 - 1966 | Oldsmobile | Starfire | ||
| 1977 - 1979 | Oldsmobile | Delta 88 | 403/6.6L V8 | |
| 1965 - 1968 | Oldsmobile | Cutlass | 400/6.6L V8 | |
| 1965 - 1967 | Oldsmobile | Delta 88 | ||
| 1988 | Oldsmobile | Cutlass Supreme | Classic | 307/5L V8 |
| 1965 - 1971 | Oldsmobile | 442 | ||
| 1969 - 1971 | Oldsmobile | Delta 88 | Custom | 350/5.7L V8 |
| 1969 - 1971 | Oldsmobile | Delta 88 | Royale | 455/7.5L V8 |
| 1971 - 1976 | Oldsmobile | Cutlass Supreme | 455/7.5L V8 | |
| 1968 - 1980 | Oldsmobile | Cutlass | 350/5.7L V8 | |
| 1982 - 1987 | Oldsmobile | Cutlass Supreme | 307/5L V8 | |
| 1971 | Oldsmobile | Delta 88 | Royale | 350/5.7L V8 |
| 1976 | Oldsmobile | Cutlass Tiara | 455/7.5L V8 | |
| 1968 - 1969 | Oldsmobile | Vista Cruiser | 400/6.6L V8 | |
| 1969 - 1971 | Oldsmobile | Delta 88 | Custom | 455/7.5L V8 |
| 1984 | Oldsmobile | Cutlass Calais | Base | 307/5L V8 |
| 1967 | Oldsmobile | Delmont 88 | 425/7L V8 | |
| 1968 | Oldsmobile | Delmont 88 | 455/7.5L V8 | |
| 1979 - 1980 | Oldsmobile | Cutlass Calais | 350/5.7L V8 | |
| 1965 - 1966 | Oldsmobile | F85 | Base | 400/6.6L V8 |
| 1977 - 1979 | Oldsmobile | Custom Cruiser | 403/6.6L V8 | |
| 1975 - 1976 | Oldsmobile | Toronado | 455/7.5L V8 | |
| 1968 | Oldsmobile | Delmont 88 | 350/5.7L V8 | |
| 1975 - 1976 | Oldsmobile | Cutlass Salon | 455/7.5L V8 | |
| 1981 | Oldsmobile | Delta 88 | Royale Brougham | 307/5L V8 |
| 1979 | Oldsmobile | Cutlass Salon | Base | 350/5.7L V8 |
| 1981 | Oldsmobile | Delta 88 | Base | 307/5L V8 |
| 1971 | Oldsmobile | Custom Cruiser | ||
| 1981 | Oldsmobile | Delta 88 | Holiday | 307/5L V8 |
| 1979 | Oldsmobile | Cutlass Salon | 442 | 350/5.7L V8 |
| 1966 | Oldsmobile | F85 | Holiday | 400/6.6L V8 |
| 1981 | Oldsmobile | Delta 88 | Royale | 307/5L V8 |
| 1977 | Oldsmobile | Cutlass | 403/6.6L V8 | |
| 1988 | Oldsmobile | Cutlass Supreme | Classic Brougham | 307/5L V8 |
| 1965 | Oldsmobile | Jetstar 88 | ||
| 1979 | Oldsmobile | Cutlass Salon | Hurst | 350/5.7L V8 |
| 1977 | Oldsmobile | Cutlass Supreme | 403/6.6L V8 | |
| 1976 | Oldsmobile | Cutlass Tiara | 350/5.7L V8 |
Specs:
| Brand | Holley Sniper EFI |
|---|---|
| Color | Shiny |
| Distributor Type | Hall Effect |
| Emission Code | 3 |
| Material | Billet Aluminum |
| Product Type | Distributor |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Best Sleep Shorts EVER ♥️
Color: Multicolor a (5-pack), Size: Medium
Love, love, LOVE these bamboo BoyShorts! I wear them for sleeping because they’re incredibly light, soft and comfortable while still having a great liner. They fit to my body while not feeling tight, snug or restrictive. Soooo comfortable. I’m 5’8” 145 lbs and went with Medium. ♥️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Amazing fit!!!
Color: Multicolor a (5-pack), Size: Large
These are quite literally the best underwear I have ever worn. I am going to replace all of my underwear with just these. I got the shorter boy shorts cut and they are amazing. These let my body be the shape that my body is, no squeezing or tight waist band. I feel so normal and comfortable in them, they’re breathable and soft!! I absolutely love them after so much trial and error with underwear I finally found the ones!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Highly recommend during pregnancy and to wear around the house!
Color: Multicolor a (5-pack), Size: X-Large
Love!! I’m currently 33 weeks pregnant. I’m 5’6” and pre pregnancy weight I would fluctuate between 132-140 lbs easily. I now weigh 162 lbs and my hip is now measuring 40 inches.
I bought the XL in the dark grey/black so that it wouldn’t be tight at all around my belly and I absolutely love them! Stretchy, comfortable, breathable. They aren’t loose around my thighs and I can tell they are gonna be nice to wear during post partum. I wear them around the house with an open robe and a bralette for the ultimate comfort.
If I were to buy them before pregnancy, I’m positive that a large would have fit beautifully, even though the small/medium measurements on the size chart would have been my pre pregnancy weight, I know they would have been too tight. I detest tight underwear!
Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Cute and Comfy
Color: Multicolor B (5-pack), Size: Medium
These are cute and comfy with a great fit. True to size they are cool and comfortable for everyday wear. I was going to order more but the price went up so I'm just waiting for it to go back down to order again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 3
Not what I’d hoped
Color: Multicolor a (5-pack), Size: Small
The fabric is nice, soft without being overly bulky. The design was almost what I wanted. I’ve been trying to find underwear that won’t ride up and is comfortable to wear under leggings. The fabric has a LOT of stretch around the legs and deforms quickly. Then it rides up and wrinkles. Smaller leg openings might make the difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
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