If you’re looking to squeeze more horsepower out of your 5.3L or 6.2L LT1 engine, you’ve come to the right place. Our CNC porting service for cylinder heads is designed for those who want to send in their castings for a serious upgrade. We’re talking about a complete porting job, a competition 5-angle valve job, and professional assembly—everything you need to take your engine to the next level.
Now, just to be clear, this service doesn’t include the cylinder head castings themselves. You’ll need to send those in to us. What you get is top-notch porting, a precision valve job, vacuum testing, and milling tailored to your specs. It’s a solid upgrade that really opens things up compared to stock heads.
Our ported gen 5 L83 and LT1 heads are a game changer. If you pair them with a TSP LT1 or L83 camshaft that we've tuned on our SuperFlow engine dyno, you could see gains of over 100 horsepower. That’s not just talk; it’s backed by real-world results.
Heads up—there’s a known issue with factory GM LT cylinder head castings where the factory valve seats can fall out. This can lead to some serious engine damage, so it’s something to consider before you go with stock castings. We recommend investing in our aftermarket LTx cylinder heads instead. Just a little caution from us, as we want you to avoid any potential headaches down the road.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2015-2019 Cadillac Escalade |
Escalade | 2015-2019 |
|
2016-2021 Chevrolet Camaro |
Camaro | 2016-2021 |
|
2014-2019 Chevrolet Corvette Stingray |
Corvette Stingray | 2014-2019 |
|
2014-2022 Chevrolet Silverado 1500 |
Silverado 1500 | 2014-2022 |
|
2015-2022 Chevrolet Suburban |
Suburban | 2015-2022 |
|
2015-2022 Chevrolet Tahoe |
Tahoe | 2015-2022 |
|
2014-2022 GMC Sierra |
Sierra | 2014-2022 |
|
2015-2022 GMC Yukon |
Yukon | 2015-2022 |

Texas Speed and Performance began as a small business in 2003. Texas Speed and Performance is situated in Georgetown, Texas, and is a leader in the LSx sector. Texas Speed & Performance has quickly established itself as one of the largest performance makers and retailers of premium LSX and LT1 packages in the United States. Texas Speed and Performance founders, Trevor Doelling and Jason Magnum, have a combined 30+ years of experience in the high-efficiency sector and are constantly striving to research and manufacture the highest quality performance goods for your car. This is accomplished by putting their products through their paces on their in-house futuristic super flow engine dyno. Texas Speed and Performance components can be found in some of the fastest street and competition automobiles in the country.
WHY CHOOSE TEXAS SPEED AND PERFORMANCE?Texas Speed and Performance provides all levels of aftermarket performance products from LSx and 2014+ 6.2L LT1/LT4 performance parts, aftermarket cast cylinder heads, basic air induction exhaust, camshafts, stroker engines and in-house machining of all their engines. They are one of the largest LSx and 2014+ 6.2L LT1/LT4 specific shops in the country. Owing to their in-house cylinder head manufacturing, engine assembly, and camshaft grinding facility, they assist customers with all of their high-performance LSx and 2014+ 6.2L LT1/LT4 needs and requirements.
TEXAS SPEED AND PERFORMANCE PRODUCT LINETexas Speed and Performance Exhaust offers camshafts, short and long blocks, turn-key engines, valvetrain, crankshafts, rods, and aftermarket cylinder heads.
VIVID RACING-TEXAS SPEED AND PERFORMANCEThe Texas Speed and Performance products at Vivid Racing include the Texas Speed and Performance Stage 4.2 LS7 Camshaft Chevrolet Camaro, Corvette 2006-2015, which has fitment for the Chevrolet Camaro 2012-2015 and Chevrolet Corvette 2006-2013 models.