Our gen 5 L83 & L86 cylinder heads and camshaft package is a must for the enthusiast looking to use the full potential of their 5.3L L83 and 6.2L L86 engine!

This package will include porting of your existing cylinder heads, so you will have to send them to us for porting, milling, and assembly. All of our TSP LT1/L86 and truck camshafts were designed on our SuperFlow 902 engine dyno using an otherwise stock 6.2L LT1 engine. We design and test many different camshafts and cylinder head designs before selecting the parts that we offer to our customers. This provides us with a distinct advantage of offering the best power curve possible without sacrificing overall performance, as well as knowing that what we offer is also safe and will not have any piston-to-valve clearance issues. Our PRC ported cylinder heads are extensively developed and tested by the top cylinder head porters in the country! We test our products before we sell them, so you KNOW that you are purchasing a heads/cam package that is proven! 100+ HP gains can be seen with the appropriate corresponding modifications!

The largest camshaft we recommend running with a factory torque converter is our 25-TSPLT1VVT-SV, which has 222/230 duration @ .050". Any additional duration will affect the streetability of the vehicle without an aftermarket torque converter. All of the truck cams listed are an excellent choice for enthusiasts wanting to keep maximum streetability and stock-like idle quality. The truck camshafts are also designed to retain excellent low-end and mid-range power for those looking to use their truck for towing. Please give us a call if you need help selecting the proper camshaft for your application and needs.

The gen 5 L83 and L86 engine utilizes Variable Valve Timing (VVT) controlled via a cam phaser. A cam phaser is a computer-controlled cam gear that automatically optimizes camshaft timing based on the current engine RPM. While this technology provides tremendous efficiency benefits, it presents a challenge when designing performance cams due to the wide range of valve timing movement and constantly changing piston-to-valve clearance. With the help of Texas Speed's Superflow 902 engine dyno, we are able to custom-design camshafts and phaser tuning tables to allow our gen 5 L83 and L86 customers the ability to purchase the ultimate in Gen 5 LT performance camshafts! Thanks to the Superflow 902 dyno, Texas Speed is the only company that currently offers a VVT camshaft with a phaser table included to properly tune the camshaft phaser once it's installed in your 2014+ L83 & L86 truck!



Features:

• The TSP heads/cam package will include:
  • Precision Race Components CNC Porting L83 or L86/LT1 CUSTOMER-SUPPLIED Cylinder Heads
  • TSP .660" Dual Valve Spring Kit with PAC Springs & Titanium Retainers Installed on Cylinder Heads
  • Your Choice of TSP L83/L86 Truck & LT1VVT Camshafts with Factory, +10%, or +32% Fuel Lobe
  • Set of 16 TSP Hardened Chromemoly Pushrods
  • Phaser Lock Out Kit

Fitment:

• Cadillac Escalade 2015-2019
• Chevrolet Silverado 1500 2014-2022
• Chevrolet Suburban 2015-2022
• Chevrolet Tahoe 2015-2022
• GMC Sierra 1500 2014-2022
• GMC Yukon 2015-2022

Note:

• There is a known issue with factory GM LT cylinder head castings causing the factory valve seats to fall out. A valve seat failure will result in a damaged head and possibly a catastrophic, irreparable engine failure. It is common enough to warrant discretion when using factory GM LT cylinder head castings. Texas Speed and Performance assumes no liability in regards to this issue since it is a factory defect. Due to this, we highly recommend purchasing a set of our aftermarket LTx cylinder heads. This disclaimer applies to all GM LT cylinder heads, regardless if you purchase them from TSP or if you supply them for us to port.
• This package will require DOD delete kit # 25-LT1DODDEL-KIT since all of our camshafts do not utilize the factory DOD/AFM system
• Competition Use Only, Not Legal for Road Use