Chevrolet C6 Corvette LS -LS3-LS7

All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!

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MADE IN THE USA!!

CAST IN THE USA!!

MACHINED IN THE USA!!

PRC's aftermarket casting LS3/L92/L99 cylinder heads come standard with the following options:

• NEW PRC 13-Degree Valve Angle LS3 Castings
• Improved Piston-to-Valve Clearance For Extra Compression & Larger Camshafts
• Smaller Than Stock Intake Port Volume For Improved Port Velocity
• Manley Stainless 2.185" Intake, 1.60" Exhaust Valves
• Billet Rocker Pedestals
• TSP .660" Dual Spring Kit w/ PAC Valve Springs, Titanium Retainers, Seats, & Seals
• CHE Bronze Guides
• Completely Assembled and Milled to Your Specifications
• 60-68cc Chambers

All PRC cylinder heads are extensively researched and tested. The all-new PRC aftermarket casting LS3 cylinder heads are designed to flow considerably more than a gm ported casting while keeping the port sizes smaller for improved port velocity. The result is a cylinder head that is smaller than a stock GM LS3 port and moves more air than any other ls3 cylinder heads! 

The all new PRC aftermarket casting LS3 heads are the perfect option for customers looking for the ultimate in LS3/L99/L92 cylinder head technology

The PRC aftermarket casting LS3 cylinder heads are available in 2 different configurations: 

• 255cc Runners for max effort stock cube LS2/LS3/L99/L92 engines looking for a 370cfm cylinder head that can be aggressively milled & still keep better than stock p/v
• 260cc Runners For LS3/L99/L92 stroker engines needing a 380cfm+ cylinder head!

The 13-degree valve angle will allow for the ability to run more compression and larger camshafts thanks to additional piston-to-valve clearance!!  

With all PRC cylinder heads, quality and performance are our two highest priorities! In addition to performance, you will not find a better performing set of cylinder heads at this price (cost is for the pair!). Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application. 

Our new and improved LS7 Stage 3.2 camshaft has taken what was already a proven camshaft and made it even better!  With our countless hours of testing on our SuperFlow 902 engine dyno, we were able to revise all of our LS7 camshafts for better power everywhere in the RPM band!  All camshafts were designed using a factory GM 7.0L LS7 engine with no other internal changes.

This camshaft features custom-ground lobes specifically designed for the LS7! These lobes not only make excellent power throughout the entire RPM band, but they are also much more stable.  So, this equates to a quieter and longer lasting valvetrain compared to most other comparable camshafts on the market.  Like all TSP camshafts, they are 100% developed, ground, and polished in-house using our state-of-the-art Landis CNC camshaft grinders!

2800 - 6900 RPM Power Band; This is an excellent performance camshaft with an aggressive idle!  Custom tuning will be required for this camshaft.  It will have a lopey idle and will pull hard through the mid and upper RPM band.

Your Choice of Camshaft, Double Spring Kit, and Hardened Chromoly Pushrods.

This package will include the following items: 

• Your LS-3 camshaft of choice
• TSP Dual Spring Kit w/ PAC Polished .660" Springs, Retainers, New Seats, & New Seals
• Texas Speed Hardened Chromoly Pushrods

Note: The factory LS3 camshaft uses a single-bolt cam design, which means one bolt holds the upper timing sprocket on the camshaft. For LS3 vehicles, you can either go back in with a single-bolt camshaft or convert to the three-bolt camshaft design that the 1997-2006 LS-based vehicles use. The three-bolt conversion kit will supply the correct 4x upper timing gear to supply the correct camshaft position signal, as well as the ARP camshaft bolt kit that will supply the three required bolts. We also offer the conversion kit with a complete, upgraded timing set for those wanting to replace the entire set.

We have two options listed for our dual valve spring kits.  The default option will use our PRC integrated one-piece seat and seal that simply pushes in place.  The other option is for the separate two-piece seat and seal that you typically find in any dual valve spring kit.  The two-piece kit will require separate installation of the valve seals after the seats are in place, and it does require a specific tool to make sure that the valve seals are installed properly (i.e. not crooked, torn, or not installed fully).  Our integrated seat and seal will make your installation much easier because it is virtually impossible to install it incorrectly!  You can choose either kit for no additional charge.  We have a picture listed when you select each spring kit so you can see the actual differences in the two kits.