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⚡ Elevate your LS engine’s pulse with Pac Racing Springs – where power meets precision!
The PAC Racing Springs 1200 Series Ovate Beehive Valve Springs deliver a robust 313 lb/in spring rate with a tight 1.140 inch coil bind and a 1.290 inch outer diameter, engineered specifically for GM LS-Series engines. Made from durable alloy steel, this set of 16 springs offers a universal fit and is designed to enhance high-RPM valve control, ensuring reliable performance and longevity backed by a 1-year limited warranty.
| ASIN | B003TTS1XW |
| Best Sellers Rank | #2,160,789 in Automotive ( See Top 100 in Automotive ) #273 in Automotive Replacement Engine Valve Springs |
| Brand | PAC |
| Brand Name | PAC |
| Color | Plain |
| Customer Reviews | 4.7 out of 5 stars 248 Reviews |
| Included Components | Valve Springs |
| Item Dimensions L x W x H | 15.2"L x 4"W x 3.5"H |
| Item Type Name | 1.290 Valve Springs -Ovate Beehive (16) |
| Item Weight | 0.27 g |
| Manufacturer | PAC Racing Springs |
| Manufacturer Part Number | PAC-1218 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | PAC-1218 |
| Number of Items | 1 |
| Operation Mode | Manual |
| Power Source | Handheld |
| Product Dimensions | 15.2"L x 4"W x 3.5"H |
| Warranty Description | 1 Year Limited Warranty |
D**N
Valve Springs for LS3 1.8 Rocker Arm Upgrade
I installed the Pac Racing valve springs on my 2011 Corvette Grand Sport (LS3) when I replaced the stock 1.7:1 rocker arms with a set of Comp Cams 1.8:1 Ultra Pro Magnum rockers. I've logged about 1000 miles since the installation and the engine behaves all the way to 6500 RPM. I bought these springs based on recommendation by others running this combination and they seem to be a good match.
S**.
found the real issue
Had about 3 hours of run time and possibly 8 miles running great on a fresh 5.3 heard a pop. Clatter boom catastrophic damage thanks to a broken spring. update after more research the issue wasn't the springs it was the head shop.
J**R
Good quality springs
I have had these on my 5.3 with sloppy stage 2 cam for a while now with zero issues.
A**E
Great springs
Yeah boi pac1218 springs for the win. Great product. Plus they come with stickers so you can show off how cool you are without having to open your valve covers at the local car shows..
A**X
Great for aftermarket cam
Installed on my ls1 with 585° lift cam no issues great quality, would recommend
A**R
*****
Arrived on time and as advertised. Installed them on my cam only 5.3 but haven't ran it yet. I have a set of these on another cam only 5.3 and they work very well.
T**L
Buy it now
Pac for the win!
B**A
Only one spring!
Only one spring arrived!
Trustpilot
4 days ago
1 month ago