Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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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
4.6 ★★★★★
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Product Reviews
★★★★★ 5
Holy dreams Batman!
Flavor Name: Peppermint
This product is so good I had to come back to review it! I originally got this for my daughter since she has terrible insomnia, but she hated the minty taste...so I started taking them along with my husband and wow is all I have to say! It makes me tired and I’ve been having the craziest dreams (I usually never dream or remember them)! Definitely recommend and I actually really like the flavor.
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Reviewed in the United States on December 9, 2020
★★★★★ 3
Not fast dissolve. After 20 minutes, it still sits beneath my tongue.
Flavor Name: Peppermint
This is definitely not fast dissolving tablets. My B12 and biotin sublingual tablets dissolve in a couple of minutes but these pills last over 20 minutes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2022
★★★★★ 5
Good supplement for uric acid support
My dad has been using this support supplement for uric acid for a while and I thought it was a good option. The ingredients feel of quality and are easy to take, as the capsules are of adequate size and do not cause stomach discomfort.
I like that it is also focused on kidney support and that it does not have a strong taste or noticeable side effects in my case. It is a convenient alternative to complement a balanced diet and healthy habits.
The value for money is good and the packaging performs a lot. In general, I am satisfied with the product and would buy it again.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Great gout relief!
Great ingredients, great price and very effective product. I have gout and had frequent very painful gout attacks, at least several times a year for the past 5 years. By taking the Uric Acid Support Formula in the past year and a half, 2 tablets per day as instructed on the bottle, when I feel an attack coming on, I’ve been able to stop a full attack several times, and have had less than 4 full blown attacks since I began using it. In all fairness, I do also increase my water intake, and often add a celery seed tincture, and simply my diet. Still, adding this Uric Acid formula in conjunction with the other regimes I mentioned has greatly decreased both the amount and severity of gout attacks.
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Reviewed in the United States on October 30, 2019
★★★★★ 5
Good product
First time I took it my gout acted up but since then I haven’t had any issues with gout at all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026