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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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For Your Every Summer RSVP, with Code: SUMMER15
Description
PRC LS7 Cylinder Heads | 285cc | CNC Ported | 400+CFMTexas Speed & Performance have been at the forefront of LSX Performance from Day One! Responsible for setting & breaking almost every record, a major key to their success has been the R&D that goes into the Texas Speed Cylinder Head range known as PRC. The Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications & all made, machined & ported in house in USA. Your New PRC CNC
Texas Speed & Performance have been at the forefront of LSX Performance from Day One!Responsible for setting & breaking almost every record, a major key to their success has been the R&D that goes into the Texas Speed Cylinder Head range known as PRC.
The Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications & all made, machined & ported in-house in USA.
Your New PRC CNC Ported 6 Bolt Cylinder Heads Include
- 100% USA Made 6 Bolt LSX LS7 Port Castings;
- 70/68/64cc Combustion Chamber options;
- 285cc Intake Runners;
- Built In Rocker Pedestals (No Rocker Stands Required);
- PAC .660" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;
- 12 Degree Valve Angle;
- 2.245" Stainless Steel Intake Valves (Optional Upgrades Available);
- 1.610" Stainless Steel Exhaust Valves;
- CHE Bronze Valve Guides;
PRC CNC Porting Process
- CNC machining of your cylinder heads intake runner;
- CNC machining of your cylinder heads exhaust port;
- CNC machining & porting of the combustion chamber to specified CC;
- 5 Axis CNC cutting of your cylinder heads valve seats;
- CNC cut valve spring seats;
- Machine the deck face to increase compression;
How Do They Work?
**Valve spring lift ratings are based on using titanium intake valves.
LS7Intake LS7 Exhaust PRC 285ccLS7 Intake PRC LS7 Exhaust
.200 161 114 169 119
.300 227 171 248 179
.400 291 193 311 211
.500 330 203 353 224
.600 351 209 386 235
.650 353 204 393 241
.700 353 209 407 246
What Is The Process To Order Your New Cylinder Heads?
We aim to keep most products in stock however certain items may require manufacturing. We recommend confirming whether these are in stock or if there is a current eta.
1. If the cylinder heads are In Stock. Once payment has been completed on your order this will ship out within 24 hours.
2. If the cylinder heads need to be ordered in, we will confirm the ETA prior to order. You will simply be required to place a deposit with the balance due upon arrival to us prior to shipping out.
The ETA provided will factor in variables such as manufacturers stock or manufacturing lead times, shipping eta's etc.
We recommend always confirming this prior to order.
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
4.7 ★★★★★
Based on 1853 reviews
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Product Reviews
★★★★★ 4
Worth your Money for Linda's Part
Format: Kindle
This book has two parts. Linda's description comes across as sincere and is told in story form as if you were sitting across the table from her having coffee. She is obviously a real person who experienced some extraordinary things. Her co-author may be a great guy but this is one of many books he sells and he doesn't have anything to say that adds to Linda's retelling. Great half a book!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2014
★★★★★ 5
Great book
Format: Paperback, Format: Paperback
I have only read one chapter however I can tell it’s going to be an amazing book!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 8, 2025
★★★★★ 5
The message of the book is beautiful
Format: Hardcover
The book 'UFO...Contact from the Pleiades (45th Anniversary Edition): Volumes I & II' is characterized by an objective, scientific and factual recapitulation of the physical evidence of the Billy Meier contact case with the Plejaren. In addition to the physical evidence, numerous witness statements and a number of proven predictions are also cited. All these material findings, such as the beautiful photos and films of the beamships in Switzerland, the metal analyses, the audio recordings and the radiation from the landing sites, were examined scientifically by the four-person investigative team from Arizona (which is certainly just as beautiful as Switzerland) using the best scientists and technology of that time in the USA. The authenticity of the case has not been scientifically disproved. The cultural and historical connection of almost all peoples and indigenous peoples with the Plajades on the basis of traditions round off the Plajaren contact case in the book.
In addition to all these material, factual, neutral and objective analyses, the author, who lived with her husband Lee Elders on Billy Meier's terrain totaling more than one year over a period of more than seven years, gives the reader every now and then the chance to catch a glimpse of the immaterial factors of the case. And these remain in the memory. For short moments, the beauty of the case's message, occurring at the terrain, twinkles: Such as the immortality of higher values and virtues, the connection of all living beings, which through peace, freedom and love etc. bring themselves together to higher spheres.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2024
★★★★★ 5
This investigation stands the test of time
Format: Hardcover
I have been fascinated by the Billy Meier case ever since I first heard of this case 45 years ago. I have read several books on Billy’s contact experiences. And there have been quesions in my mind about the validity of the case. There are things I cannot explain but I chose to remain open to the possibility.
With that being said, I really appreciate the investigative background of Lee and Brit Elders.
The photographs, metal samples and recordings given to Lee and Brit Elders really stand the test of time and still quite amazing.
This book is intelligently written and I think is beautifully done. The quotes from Semjase are positive and affirming. The photos are astounding and I am happy to have this in my library. I love a book that encourages me to ponder the possibilities.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2024
★★★★★ 5
Ordinary People, Extraordinary Experiences
Format: Hardcover
A beautiful and interesting coffee table book. Whether you're a believer or not,the many photos of the Swiss countryside are lovely, and the photos and remarks from ordinary people like us are interesting and moving. Experiencer or not, a worthwhile purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2025
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