Special Grind # 13459
PART NUMBER: 08-000-8-11321
110 lobe sep.
Comp Cams SBC Xtreme Energy Step Nose Hydraulic Roller Camshafts. These particular heads are for a solid roller setup, not a hyd. roller. The dyno info below is just to give you an idea of what power may be obtained from these heads with a given cam size.
Official Dyno report on our 434 engine with this cam, single plane intake, 1.6 rockers, Brawler 950 carburetor, AFR heads, and an MSD distributor.
An excerpt from our engine ad about our new dyno.
As of 9/15/2013 we have completed installation of our brand new Super Flow 902S dyno. In the past we have outsourced our dyno work. Never being able to do the research and development we truly wanted, prompted us to make the $105,000.00 investment. Needless to say it's been the best investment we have ever made. Every aspect of our engines can now be monitored, calibrated, tuned, and best of all see what combos make the best power, with consideration to drivability. One thing we have noticed is that the de-tuned engines with different cam and intake combos certainly do have less top end horse power as expected but the torque increase in the low rpm range is much greater than the higher horse power setup. This increase in torque down low is what you want if your sporting around on the street, rather than all out racing. The de-tuned version of our engines will also allow you to set the car up closer to stock and increase drivability to a very high degree. Throttle response is also noticeably better.
One of the worst mistakes you can make building up an engine is to get a mismatched combination of parts. We know about combinations and how they work. Take a test drive in a car with over 400hp vs. a 300hp or less and you will then see what youâ€™re missing. The exhaust sound under load is very pleasing. We are very pleased with everything about the AFR heads. Few if any of the others know much about the correct way to setup a set of cylinder heads.
|Accessory Bolt Holes Drilled||Yes|
|CNC-Machined Combustion Chamber||Yes|
|CNC-Machined Exhaust Runner||Yes|
|CNC-Machined Intake Runner||Yes|
|Combustion Chamber Style||Heart|
|Combustion Chamber Volume (cc)||65|
|Cylinder Head Finish||Natural|
|Cylinder Head Material||Aluminum|
|Cylinder Head Style||Assembled|
|Damper Spring Included||Yes|
|Exhaust Port Location||Raised|
|Exhaust Port Shape||Square|
|Exhaust Runner Volume (cc)||80cc|
|Exhaust Valve Angle||23|
|Exhaust Valve Diameter (in)||1.600 in.|
|Exhaust Valves Included||Yes|
|Guideplate Pushrod Size||5/16 in.|
|Intake Port Location||Standard|
|Intake Port Shape||Rectangular|
|Intake Runner Volume (cc)||220cc|
|Intake Valve Angle||23|
|Intake Valve Diameter (in)||2.100 in.|
|Intake Valves Included||Yes|
|Lock Style||10 degree|
|Machined for O-Ring||No|
|Maximum Valve Lift (in)||0.670 in.|
|Notes||Not compatible with self-aligning rocker arms.|
|Number of Springs Per Valve||Dual|
|Oiling Style||Through pushrod|
|Outside Diameter of Outer Spring (in)||1.550 in.|
|Quantity||Sold as a pair.|
|Retainer Material||Chromoly steel|
|Rocker Arm Nut Thread Size||7/16|
|Rocker Arm Nuts Included||No|
|Rocker Arm Studs Included||Yes|
|Rocker Arms Included||No|
|Spark Plug Style||Angle plug.|
|Steam Holes Drilled||No|
|Valve Cover Mounting Style|| perimeter bolt|
|Valve Guide Material||Bronze|
A final note...Skip White Performance...About Us
I'm sure many of you have noticed there are 2 high performance engine builders in Kingsport, TN with similar names, leading to a great amount of confusion.
We are Skip White Performance, NOT White Performance and Machine.
Due to the name similarity, many customers looking for us online inadvertently find them, thinking we are the same company. Definitely not...there is no connection between the two companies. We don't have a problem with free enterprise (competition). However, when the competition builds their foundation on such things as a name similarity and their supposedly long history of being in business, then we think it's about time we set the record straight.
We have owned White Performance since 2003, with the exception of the machine shop, which was owned by Fred White at the time. He continued to operate the machine shop and build engines for us while we continued selling online under the user ID of skipwhite and the store name of whiteperformance1.
Due to their limited production capability and many disagreements about the engine and head building process as well as workmanship, we opted to open a full scale machine shop of our own a few years later. Fred White began competing against us even though our contract had a non-compete clause in it.
As our business grew, we opened a second, much larger warehouse and machine shop around 2011, located on Brookside Ln. in Kingsport TN. By putting heart and soul in this company, we have become the number one street rod engine builder in the nation.
Fred sold his shop to an investor in 2016 and the new owners continue to reap the benefits from this confusion between the two shops. This investor lacked any knowledge of this industry. They continue to use the White Performance & Machine name. Contrary to what is posted on their website, Fred White is no longer associated with the company in any way. Their main spiel in advertising is, "In business since 1979," when in fact, we purchased the White Performance company in 2003, with the exception of the machine shop.
All in all, we have been in this business going on 17+ years. Skip White's passion has been owning and building street rods for 47 years on a personal level. The knowledge he has gained over time has allowed him to venture into this business and succeed to a very high level.
The great pretenders continue capitalizing on our success due to the name similarity, but have been degrading our reputation. We have been getting calls nearly on a daily basis from people that now realize there are two shops in this town with very similar names. Customers complain of serious problems in getting their orders in a timely manner from them. They think they purchased their cylinder heads from us. Due to the confusion, there is an increasing amount of negative feedback that is affecting our name within the street rod community, when in fact we have a near perfect reputation in this industry. We have an "A+" rating with the Better Business Bureau and we have maintained the A+ rating for many years.
FAST FORWARD TO PRESENT DAY...We have become the largest street rod engine builder in the nation. Our engines, rotating assemblies, and cylinder heads are built to very high standards and shipped to our customers in a timely manner. We are a premier seller on with a positive feedback score of well over 206,000 and growing, as compared to our competitor’s score of approximately 24,000.
Our engines are custom-built to our customers' specifications and are shipped in approx. 2-5 weeks, perhaps sooner, depending on the season. Our rotating assemblies usually ship out in about one week or less, and our heads ship in about a week or less.
We are not responsible for collateral damage caused by the use of this product.