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Price: $669.00
NKB190cc STREET/STRIP PRO SERIES SBFFORDALUMINUM HEADS. 60cc COMBUSTION CHAMBERS. BOTH HEADS FULLY ASSEMBLED. READY TO USE.
Set up for hydraulic roller cams.
190cc runner size, 60cc combustion chambers. 2.02 1.60 valve size. Fully assembled, premium hardware.
We consider these heads to be perfect for a medium to aggressive 302 street rod build running on pump gas, or a mild/medium to slightly aggressive 331 or 347 stroker street rod running on pump gas. A good cam range would be from a 460 to 585 lift. Compression range should be around 10.5:1-11.5:1 when run in a 302 when using a cam in the upper range.
Those building a 331 or 347 stroker could get by with a bit less compression but not much less, so do choose your pistons wisely on your build. The short stroke 302 can handle a considerable amount of compression, so should you decide to build up a 302 using a cam that is 500 or greater lift, then you will need to run compression in the upper limits.
If you're building a 347, then the cubic inch increase will decrease the need for the higher compression, or should you decide to run a cam in the lower ranges, then compression as low as 10:1 would suffice, especially if you're building a 347. We can help you select your cam and pistons to match up with these heads. The 190cc runner size is actually a perfect size for those wanting to maintain a decent amount of bottom and mid range power, and due to the very good flow numbers kicking in at 300 lift and above, excellent top end power can still be achieved.
The Procomp heads did well for most users, but the flow chart shows the NKB heads to be superior, especially considering they are 20cc's smaller in runner size. Crisp, rapid throttle response will be experienced with these heads compared to the Procomps. We might add that the build quality is very good on these heads. Couple this with the excellent hardware we use, and our great care in the assembly process, and I would say these heads are the best value we have seen in many years on a set of Ford cylinder heads.
Please note: Due to a high volume of sales at this time, these heads may take up to 3 business days to complete and ship. Please let us know if you are under a time constraint with this order, and we will do our best to accommodate your request.
Flow chartinformation.
Below is our flowchart on several different heads. Both tests were performed on a Superflo 1020 bench by our expert head builder. We stand behind the accuracy. We have noticed many other sellers posting what we consider false flow numbers on the heads they are selling. We find this to be nothing short of outright fraud. Sure, flow numbers can vary a few points depending on equipment used, and testing methods, but not 15-25 points. Take notice to the low lift flow numbers produced by our new heads. That is as important as the upper lift numbers, and is why these heads produce so much peak power and torque. We are very impressed with the overall flow numbers of our new heads. The exhaust didn't exceed the Procomp heads by much, but both of these heads made more than enough to support the venting of exhaust gases.
NKBFord 190cc
Pro Comp Ford 210cc
Lift
INT
EXH
Lift
INT
EXH
100
65
59
100
61
56
200
114
100
200
113
99
300
164
140
300
158
133
400
214
160
400
197
162
500
245
168
500
225
167
550
254
169
550
235
168
600
259
170
600
244
168
650
260
169
650
248
167
What is most important about the flowchart above is the fact that both of these heads were tested by the same person on the same machine (Superflo bench 1020) using the same testing method on the same day. Regardless as to whether the numbers are absolutely correct by other standards, they show the true difference between each other, and that's what counts. The difference in horse power and torque generated by these new heads is considerable compared to the Procomp heads. It's also important to note the flow numbers and consider the fact that the NKB heads have runners that are 20cc smaller. This will result in a very noticeable amount of power in the low and mid rpm band as compared to a head that has a larger runner and produces lower or even the same flow numbers overall. The drivability factor between these two heads would be monumental.
The hardware setup on these heads is for use withhydraulic roller camshafts up to .600 lift.See our other listings for hardware setups to accommodate hyd. roller as well as solid roller cams.
If you're not sureabout the type cam you haveor are soon to have, pleasegive our techsupport a call at [phone removed by eBay].
A breakdown of the part number.
The NKB stands for "New Kid on the Block", 190 represents the runner size, 272 designates the use of 100 long valves, and single springs with a damper setup for hyd. flat tappet cams. You will also see the heads listed with the number 274. The 274 designates the use of 200 long valves with dual springs with a damper, setup for hyd. roller cams. We also have the valve train setup for solid roller cams, and that will have the number 583 rather than 272 or 274.
Our new NKB-190cc heads have been designed especially for us. With many recommendations from our engine builders concerning the heads, we have come up with the best quality, best flowing heads on the market relative to cost. The only way you're going to get a set of heads that flow as well or better will be to spend at least double the cost or more.
This ad is under construction, and will soon have more info pertaining to these heads. We have been selling the heads for some time but did not advertise them until recently. We will soon dyno an engine with them and post the results.
Important note from Skip White.
We certainly know where to draw the line with low end products, and we continue drawing that line with the elimination of parts that we once accepted but that have shown to be a potential problem sooner or later. Sometimes it's not that a particular product has or will have a problem, but that something better comes along. To be honest, this is that "something better" coming along. Considering the price is only slightly higher, this has to be the best value in a set of cylinder heads we have ever offered.I want you to take my word that in the rare event you have issues with our NKB Ford heads, the problem will be taken care of.
Rocker Stud recommendation:
We insist on the use of ARP rocker arm studs. No other substitutes will do, with the exception of the GM Performance brand. We have seen several very serious design flaws on the import rocker arm studs that are on the market. This was not a problem several years ago, but it certainly is now. We no longer offer the lower cost rocker arm studs and never will again. The additional cost for genuine ARP studs is very little considering what problems the low quality studs may cause. The problems are serious enough that we cannot warranty the heads unless the correct studs are used. There are several items that we take no chances on regardless of how appealing the price is, and the import rocker arm studs are at the top of the list. As for other sellers offering studs and guide plates with their heads, it would be a fair assumption that they are using the low grade studs. We have a detailed explanation of the importance of a high quality rocker arm stud later in this listing, PLEASE READ IT! See our other listings for valve train related items that you may need for your project.
Torque specs for rocker arm studs is 50 ft/lbs and you must use thread sealant on every stud.
This is the perfect choice for the SBF street rod.
Here is a rundown on the hardware we are using:
NON MAGNETIC, stainless steel valves, swirl finished one pc. undercut. This is the same valve we have used for years, with zero failures. Non magnetic is very important. Our cost on these valves is around doublethe price ofsome of low cost valves on the market. We know for a fact that many head buildersuse low costmagneticvalves. We do not use themand never will. If the valves pull a magnet, they are not high temp stainless. They may be stainless, but they have very low nickel content in them. Stick a magnet to your stainlesskitchen utensils; it will pull a magnet very strongly. Kitchen utensils are made from 400 series stainless, and have very little nickel in them, as they don't encounter extreme temp ranges. It is the higher nickel content that allows a valve to withstand high temperatures.
Our Melling springs are1.46 diameter, with an internal damper. Others are using springs that are much smaller in diameter. Smaller diameter springs may be in the correct spring pressurezone, but they are usually very short lived.Zero failures with oursprings. Thesprings in this setup are to operate withhydraulic flat tappet camsup to.550 lift. For those running solid or roller cams, see our other listings forheads builtfor these typecams. We have also seen spring kits on the market that are larger in diameter, but are made with much thinner coil material.
We use only Comp Super10 degree machinedlocks. Our head builder noticed the low grade locks on the market fit looser than he felt they should, not to mention the possibility that they are made from inferior metal. He envisioned the engine being much more prone to dropping a valve at high rpm. We have yet to have an engine drop a valve due to a valve lock failure.
We hone every guide in the heads with a ball berry flex hone to establish not only perfect clearance, but also a semi cross hatch finish for oil retention. We finish off with a natural bristle brush. The heads are then placed in our parts washer and cleaned with high pressure hot water, then pressure dried. This procedure is not performed at the factory due to the fact some engine/head builders prefer to establish the valve to guide clearance and finish in different ranges. Before installing the valves, we apply a heavy coat of engine assembly lube to the valve stems.
Our next step is to setup the springs at a predetermined pressure using a spring height checking device. We set the spring pressure to be most suitable for street rod use. The springs we are using allow for a near perfect seat to nose ratio for most cams. Be warned that some sellers of aftermarket heads may not be checking the installed height when assembling the heads, and some that are checking this may not be setting them up to the correct pressures. We have a full scale machine shop with several very knowledgeable engine builders that know and fully understand how to properly assemble a set of heads. Combine the possibility ofpoor assembly methods with incorrect or low grade hardware, and it is easy to see how failures can result.
If you have anytechnicalquestions about these heads orif you need to know if they are right for yourapplication, feel free to email us with your question, or give us a call at[phone removed by eBay] 8am-7pmMon-Frior 10am-3pm on Sat. (Eastern time).
Screw in studs areNOTincluded.
We donotinclude studs or guide plates with the heads. Somesellers do include them, but as you know, there are two sizes of studs to choose from, (3/8's or 7/16's) and two different styles of guide plates are now offered. Many customers in the past have forgotten to inform us as to what size studs they would like after buying the heads, and we then email them for this information, but often do not get a response. This causes a delay in processing their order.
We have lowered the price to compensate for the fact that these items are not included. We strongly recommend the use of ARP rocker arm studs. We have seen several quality issues on the import rocker arm studs that are on the market. We no longer offer the lower cost rocker arm studs and never will again. The additional cost for genuine ARP studs is very little considering the differences. The problems are not just with one supplier, and as mentioned, they are serious enough for us to never offer or use them again in an engine. There are several items that we take no chances on regardless of how appealing the price is, and the import rocker arm studs is at the top of the list. More detailed info follows on rocker stud issues. See our other listings for valve train related items that you may need for your project.
If you have anytechnicalquestions about these heads orif you need to know if they are right for yourapplication, feel free to email us with your question, or give us a call at[phone removed by eBay] 8am-7pmMon-Frior 10-3 on Sat. (Eastern time).
For customer support call [phone removed by eBay].
For overseas shipping quotes, email us using the contact seller tab or feel free to call us.
IMPORTANT NOTE: MUST READ!
We have noticed several sellers of assembled heads using a, one size fits all, hydr. flat tappet, and hydr. rollerspring and valve setup.
We are positively sure that this is not theproper type hardware touse onyour heads. When using a hydr. roller cam, we not only use a dual spring and damper combo, but also use .200 long valves instead of the .100 long. The .100long valves are used on ourhydr. flat tappet setups.As many of you may know, a hydr. roller cam is usually higher in lift and duration, requiring a longer valve, but all roller cams use a more aggressive spring setup also, to keep the roller lifters planted on the cam lobe. They are very prone to wanting to bounce the roller lifteraway fromthe lobe due to the very different lobe design. These sellers using a one sizefitsall setup are trying to hit a happy medium, and most head builders we know of are completely against it, as well as many head companies such as Dart, etc. If they have this setup somewhere in the middle, then it would be too much for the hydr. flat tappet cam, and create a wear issue in our opinion.Putting too much pressure on flat tappet cams is a sure way to kill the cam. It's just another way of increasing profit for the seller without regardfor thecustomers' best interest, inour honest opinion.
We setup your heads the way they should be, according to what type cam you have, and the difference is dramatic between a roller cam and flat tappet cam. Even the odd ball solidflat tappet cam, has its own uniquesetup depending on what lift it is. The one size all hardware claims to also work on these cams.We know of several sellers using this insanemethod, and it’s not the proper way to set up a set of heads, in our very strong opinion.
We have to charge a slightly higher price for a set of heads using a hydr. roller cam and we can promise you, it's a must that the hardware be correct for this type cam.Call up any cam manufacturer and tell them you want to use a one size fits all setup on their hydr. flat tappet cam orhydr. roller cam and they will tell you this is notadvisable,and depending on thespring pressure,it can't serve both properly.Valve float on the roller setup, or extreme wear for the flat tappet cam, depends onwhat cam this crazysetup is closer to. We would not even consider this type hardware, and believe me, the simplicity of it is appealing.
IMPORTANT NOTE CONCERNING ROCKER ARM STUDS.If you have been a regular shopper with us, you will have noticed we do offer some knock-off products that are made off-shore. We do also sell many products made in the USA. We have always been veryparticular as to the quality and workmanship of such products, with consideration of the cost. We scrutinize our products verycarefully and refuse to sell products that simply don't meet our standards, all things considered. We have noweliminated another of the low cost knock-off products from our line. The low cost rocker arm studs being imported have shown numerous problems unlike those in the past. We have looked at several others on the market, and still find many issues with them that are not acceptable.
The most serious issues were the fact that many of the studs had run-out in the shaft up to 150 thous. This caused major problems with rocker alignment, and depending where the position was when the stud tightened, would determine the direction of the misalignment. If the stud position was facing the valve, then the roller tip would not run off to the side of the rocker but it would cause the roller tip to not be centered on the valve. This would then create a loss of lift, but there was another issue that concerned us most of all. The warped studshaft of some of these studs would allow the rocker tip to set cocked on the valve tip more or less, depending on what position it tightened up at. This would then side load the valve tip with undue pressure, creating a serious wear problem on the valve tip and valve guides in the heads. This also side loaded the rocker trunnion, and front roller creating an excessive wear issue in the roller rockers.
We also found the difference in the tread pitch and depthto be dramatic compared to the ARP studs, and as you know, the rocker studs in an engine are under a tremendous upwards pull and improper thread design will cause the studs to possibly pull out of the head. The ARP studs screw into the heads with a very precise fit and feel, and the run-out is virtually non-existent.
We are glad to offer many low cost off-shore items, but we will always give careful consideration to quality, functionality, and overall value. The after-market rocker studs will never ever be sold by us again.
You will notice that we offer many USA made products, but do not offer that same item in an off-shore line. It certainly is not because we don't have access to the low cost off-shore product, but because of quality issues that we have discovered. Getting a good value is very important and working within your budget is the only way many are able to complete their project. We have rejected many products that are outright junk and would cause serious issues in your engine, only to see other sellers offering those same exact products. It's all about learning where to draw the line.
We are going to be adding dyno charts, flow charts, and much more good info about these heads as soon as we can.
If you have any questions about these heads orif you need to know if they are right for yourapplication, feel free to email us, or give us a call at[phone removed by eBay]8-7Mon-Frior 10-3 on Sat.(Eastern time).
Stud Girdle recommendation.
If you are running full roller rockers, we recommend tall valvecovers, and this can cause the oil that is pumped up into the top of the headsto not be deflected back down onto the valve springs, valve tips and rollerrockers. The lack of oil on these parts can lead to not only a lack oflubrication but also to a lack of cooling on these parts. Heat transfers up thevalve stem from the combustion chamber. This heat is very high in temp, and maycause serious damage to the valve guides, springs and roller rockers.
The cure for this would be to install a low cost set of studgirdles. Stud girdles increase stability to the rockers’ studs, eliminatingflex that is may be present to some degree when running cams several sizes overstock, not to mention increased spring pressures over stock. Stud flex robsyour engine of power and smooth operation in the upper rpm ranges. As mentionedabove, another very important aspect of using stud girdles is that they deflectoil directly back onto the valve springs, valve tips and roller rockers. On astock engine this is not an issue due to the fact that stock valve covers arevery close to the top of the rocker arms.
If you have ever removed the valve covers on an engine while it isrunning you would notice that the oil sprays up out of the back side of therockers and goes in all directions. The most important reason that oil isbrought up into the top of the engine is for lubrication and just as importantly,to cool the valve train components. The oil temp does have a great coolingeffect, as its temp is only around 215 deg. and the heat that is transferringup into the valves and springs is far greater than this. If oil were not flushedonto these parts, lack of lubrication would be just one problem. Valve guidesand stems that are heated up to high temps, and also lack the properlubrication may experience excessive wear. We suspect that these parts may be stresseddue to the oil not being redirected back onto them, and stud girdles wouldpositively protect these parts to a great degree.
We now use them on every engine we build regardless of the degreeof cam and spring pressure. Those running cams that are above 460 lift should usestud girdles, since this is about the level that stud flex may come in,especially when running the smaller 3/8's rocker studs. Excessive valve guidewear along with other valve train components can be very expensive torepair.
Skip White
A final note...
Our eBay user id is: skipwhite, and oureBay store name is whiteperformance1. You may have noticed other sellers usinga similar name offering similar products. These other sellers have capitalizedon our name, and many customers searching for us will inadvertently find them,thinking we are one in the same company. There is only one "Skip White."We are the original premier eBay seller under this name since approximately2002. We have no other eBay names, nor are we associated with any other companyregardless of the similarity in the name or location. Our official company nameis Skip White Performance.
Skip White
If you have any questions about these heads orif you need to confirm that they are right for yourapplication, feel free to email us, or give us a call at [phone removed by eBay]8am-7pm Mon-Frior 10-3 on Sat. (Eastern time).
RETURN POLICY
If an items needs to be returned forANY REASON,the customer MUST CALL FOR AN AUTHORIZATION from us. The item must be LABELED CORRECTLY and include a copy of the ORIGINAL RECEIPT inside the package. It is preferable that you use the original package that the product was received in. You MUST label the OUTSIDE of the package with the ATTN to representative that gave authorization written in BIG BOLD LETTERS on the OUTSIDE of the package AND on the receipt inside the package. You must also explain in writing what the problem is with the item. It is preferable that you enclose this information in a packing slip attached to the box.
We cannot stress how vitally important this is in regards to getting your return taken care of in a prompt manner. If the item comes back to us UNLABELED and/or NO RECEIPT inside the box, the return WILL NOT BE PROCESSED.
If the item is unclaimed for more that 7 days, the returned item will be marked return to sender if allowed by carrier. If return to sender is not allowed by carrier, the item WILL BE DISCARDED.
We are NOT RESPONSIBLE for any returns received that are not properly authorized and labeled correctly.
Please call for authorization [phone removed by eBay]. Please haveebayuser name, date of purchase, and item number(s) when calling for return authorization. If the item is defective, we will pay the shipping in both directions for up to 30 days.Beyond30 days you will be required to pay the shipping to send the product to us. We will always pay the shipping to return the replacement item to you.
We are not responsible for collateral damage caused by the use of this product.
PAYMENT AND SHIPPING DETAILS
WE OFFER GREATDISCOUNTS ON SHIPPING. YOUONLYPAY THE FULL SHIPPING FEEON THE HIGHEST SHIPPING COST OF YOUR ITEMS, ANDHALF PRICESHIPPING ON ALL ADDITIONAL ITEMS. (HOWEVER, ADDITIONAL SETS OF HEADS WILL SHIP AT FULL PRICE DUE TO WEIGHT.) FEW OFFER DISCOUNTS ON SHIPPING SUCH AS THIS.EMAIL US USING THE"ASK THE SELLER A QUESTION"TABIF YOU WOULD LIKE US TO CALCULATE YOUR SHIPPING COST ON MULTIPLE ITEM ORDERS.YOU MAY ALSO REQUESTAN INVOICE AT TIME OF CHECKOUT. IF YOU ARE UNABLETO CONTACT US BY EMAIL PLEASEGIVE US A CALL AT[phone removed by eBay]FROM8AM-7PM EASTERN TIME MON-FRI AND 10AM-3PM ON SAT.WE WILL ANSWER YOUR EMAILWITHIN ONE BUSINESS DAYIN MOST CASES,SO KEEP SHOPPING AND PAY HALF PRICE SHIPPING ON ALL ADDITIONAL ITEMS. OUR CHECKOUT SYSTEM WILL AUTOMATICALLY CALCULATE YOUR SHIPPING DISCOUNT AT TIME OF PAYMENT,SO LONG ASYOU CONSOLIDATE YOUR PAYMENT.
If you checkout and start over, the auto calculator will not recognize the multiple purchases, and there will be no shipping discount. Should you decide to start purchasing again after checking out, you willneed to contact us so we can calculate your shipping for you.
IF YOU ARE HAVING DIFFICULTY PAYING WITH PAYPAL, FEEL FREE TO GIVE US A CALLAT[phone removed by eBay].SALES AND CUSTOMER SERVICEHOURS OF OPERATION ARE8AM-7PMMON-FRI &10AM-3PMSAT EASTERN TIME ZONE
FOR TECH SUPPORT, PLEASE USE THE"ASK SELLER A QUESTION TAB". IT'S LOCATED AT THE TOP RIGHT HAND SIDE OF THIS PAGE. YOU MAY ALSO CALL FOR TECH SUPPORT IF YOU'RE UNABLE TO EXPLAIN WHAT YOU NEED IN AN EMAIL. TECH SUPPORT IS USUALLY NOT AVAILABLE UNTIL AROUND10AM-5PMMON-FRI EST.
FedEx is our primary shipper. Weare unable toship to APO/FPO addresses. Help us ship your order promptly by including your physical address at checkout.If your order MUST be shipped to aPOBOX, please contact us by phone. Additional charges may apply. Below is a map representing the estimated delivery time to get to youfrom our location.
FedEx Home Delivery delivers Tuesday - Saturday. If apackage leaves here on aThursday, and youare in a 2 day deliveryzone, your package will deliver to you on Saturday.If you are in a3 day zone, and your package leaves on aThursday, you will not receive it until Tuesday.Expedited shipping is available upon request for an additional fee. Please contact us forrates.
HawaiiandAlaskahave a 6+ dayestimated delivery time.
The shipping quoted in this ad is only for the48 continentalUnited States. If shipping to anywhere else, please give us a call or email us for quotes. The half price shipping on all additional items also only applies to items that are being shipped in the 48 continentalUnited States. If you have any questions, you may give us a call at[phone removed by eBay].
Pay with your credit card through PayPal, or call us at [phone removed by eBay]