For carbureted applications, Coast uses the Edelbrock Victor Jr. single-plane intake, Holley HP 750, and an engine compression ratio of 9.5:1. A 1-inch spacer will add another 10 hp, but unless you've got a cowl hood, the taller combination won't fit. This is the second component in overlap and is a compromise between reversion at low rpm and part throttle and the positive effects of scavenging higher in the power band and WOT. return formatvalue(parseFloat(form.widthmm10.value / 25.4 * form.aspect10.value / 100 * 2) + parseFloat(form.diameter10.value), form.rsize); Thank you Peter,, Would a dual plane be more suitable ? MGI SpeedWares camshaft calculator is a free tool made by and for car enthusiasts. It offers a broad torque curve without giving up too much high-rpm horsepower. That all being said not to say 114 means 550 as there are variable such as trans, driving, launching etc. { damn i got my car backk woot woot! You remember what the duration and LSA was on that ultradyne by chance ? { if (input.value != null && input.value.length != 0) function findeqratio12(form) I remember trying it and I want to say we went with the LS7 cam back then since we liked it better. High Performance starts with math, precise measurements and calculations. form.racecarb13.value = findracecarb13(form); In fact, the average torque throughout the entire pull was 529 lb-ft. If we had to pick one, Duttweiler agrees the GM Performance Parts CNC-ported LS6 heads are a good choice. var b = 0; function findwidthin10(form) WOW, I down loaded it and played on there for a while. This field is for validation purposes and should be left unchanged. { msg = msg + " field has invalid data: " + input.value; Otherwise I think it should make an easy 500. Johnson tells us the LY connecting-rod forgings are plentiful, inexpensive, and reliably capable of handling much more than 500 hp when equipped with quality hardware. Another trick is finding a '69-'70 block that has thicker cylinder walls and will take a 0.060 bore for a rebuild later. When it comes to understanding how a dynamometer measures torque and calculates power, it will help to know a few more basic definitions and formulas. form.diameter11.value = ""; The venerable 440 has always been a relatively cheap, reliable source of horsepower and torque. You can use it unported, as the runner volumes are already large enough for the job. form.rpm5.value = ""; You can actually do that right in the program by hitting the port flow button. var nines = "999999999999999999999999"; The earlier 455 engines enjoyed a stock 10.25:1 compression, while later engines dropped to roughly 8.5:1. The Pontiac's stock rod length is 6.625 and in his opinion it's already too long. It helps rid the cylinder of burnt gasses, but its a compromise. Post it here! Low cost is the beauty of building a Chevy. You can use our horsepower calculator below to try it out yourself. if (x==5) In terms of power, this isn't even 1.1 hp per cubic inch. First time out off the dyno. var n8 = 0; So in this case, we would use the Edelbrock Performer RPM 454-0 heads. } { What has changed in the last 10 years that allowed an easy 500 to happen? var e = 0; if (!checkNumber(form.bore, .00001, 99, "Bore") || !checkNumber(form.stroke, .0001, 99, " Stroke") || !checkNumber(form.heads, 0, 200, "Heads") || !checkNumber(form.gt, .0001, 1, "Gasket Thickness") || !checkNumber(form.dt, .0001, 1, "Deck Thickness") || !checkNumber(form.cylinders, 1, 12, "Number of Cylinders")) { This cam will require some stout valvesprings, a good set of roller rockers like Comp's Hi-Tech series, and good pushrods. . Ford 466ciIt doesn't get much easier to make 500 hp when you start with a giant motor. { with my car undamaged! Small-Block Chevy 383ciWhile the first-generation small-block Chevy enjoys the fruits of more horsepower tuning than probably any other engine on the planet, it also suffers from the limitations of its design. thanks, [] 2. Ran there consistently for 2 years. 3406 Democrat RoadMemphis, Tennessee 38118. } As we know this stuff takes practice and optimizing the parts to reach a certain speed. form.mph5.value = findmph5(form); I will be making separate posts in the future for those after I get some input on this question. For the best experience on our site, be sure to turn on Javascript in your browser. if (x==10) Notice that although physically torque is a force, mathematically it already has the same units as work. var f = parseFloat(form.piston.value); } It can be used out of the box after you set the seat pressure to match the cam. var rounded = "" + (fltin + (fltin - parseFloat(strin.substring(0, rsize)))); The answer lies in huge jumps in cylinder-head design, low-dollar stroker cranks from overseas, and roller-cam technology that gives you lift and duration without the overlap and valvetrain wear. The Fox engine mounts are the same for the 351 and the 302, you'll just have to use a Fox oil pan. form.trans8.value = ""; { This is just one of the many tools we use to analyze things. form.conv8.value = ""; } { Privacy Statement - 33,000 lb-ft / min = lb-ft. x 2 x revolutions/min. if (x==12) var num = 0 + str form.weight0.value = ""; Since cylinder-head flow is limited compared with the Gen III engine, we chose to build a 383 with a few more inches to make up for its airflow limitations. but can't stand up to my 400HP 05 Vette, take more than HP. form.hp1.value = ""; }, Engine Rear Wheel Horsepower Calculator Based on total vehicle weight and 1/4 mile MPH. newValue = Math.round(newValue) One horsepower is equal to 745.7 watts, watts being a unit of power that James Watt also came up with, and the same unit you see everyday associated with things like light bulbs and electrical devices. n4 = n2 + n3 + c - f The larger overlap becomes associated with lower overall engine/blower efficiency and power loss. We've seen large-tube headers work on even mild LS1 motors. Northern Great Plains and Rocky Mountains, Signature Pictures and PhotoShop Requests. For a better understanding of the hows and whys behind tweaking individual valve events, check out this video which will help guide you on the path to mastering cam timing. if (x==9) form.cyls9.value = ""; Expect to step up to a good aluminum head like the fully CNC-ported AFR 195 to flow enough air to make excellent torque and still clear the 500hp cutoff. For our purposes, the arm is a radius. Not only do we offer great features on our customizable control panels, we will confidently beat our competitors prices. The guys at Coast High Performance build Windsor-based 408s with 4.00-inch strokes and 4.030 bores using tall-deck 351s and 6.2-inch rods. According to Duttweiler, all it takes to make 500 hp is cylinder heads that flow 310 cfm or better along with a little more camshaft than stock. The Edelbrock Group will be in attendance at many of the largest races & car shows across the country. When using a 3.00-inch-main 455 crank, you will need to grind 0.100 off the block in the area where the front counterweight touches. A radian is an angle where the radius is the same length as the length of the arc created by that angle. Xtreme Energy Camshaft Dyno Results } return newValue; return formatvalue(form.weight0.value * Math.pow(form.mph0.value / 234, 3), form.rsize); } form.mph6.value = ""; It also works the opposite way. form.strtcarb13.value = ""; I also have adjustable wastegates on mine, which are currently set at 10 psi. form.mph2.value = ""; To learn more, view our Fulper recommends forged I-beam rods with ARP bolts. return invalid.substring(0, rsize); form.diameter10.value = ""; form.effratio12.value = ""; form.hp0.value = findhp0(form); n8 = n7 / n4 Big-Block Chevy 496ciSee if you follow this logic. form.widthin11.value = ""; var a = 0; To learn more, view our. Thats wasted power right there. { } We strongly endorse this product if you are serious about improving your vehicles performance and your success at the track. if(x==11) Contact Us - function findheight10(form) Use this compression calculator tool to figure the compression you will get with the specifications you provide. return formatvalue(1353 / form.mph1.value, form.rsize); function findconv4(form) Thinking of adding power with a new combination? Does [email]589@7000[/email] and [email]482@6000[/email] with a 232/234 .595/.598 112 sound right if I entered the LS3's bore, stroke, head flow, valve size and a FAST 90 intake? form.strtcarb13.value = findstrtcarb13(form); } The best way to get the weight is to weigh your vehicle at the track with the driver seated inracing position. return formatvalue(1353 / form.mph2.value, form.rsize); { { var c = 0; I think it's fairly close, but I don't have any LS3 dynos to compare it to. I think the issue might be OPs car might have made 525-550 hp but it may not have been optimized so he did 114 but maybe with some practice / shifting rpm testing and some traction he could have gotten 116 mph or more but who knows that was 1989. Pretty much the same set up except Air Gap and 750 Holley in place of my Speed Demon. function findtire8(form) If a 10 lb. It isnt always obvious which camshaft we should choose for our engine build. { N60 W22700 Silver Spring Dr. Sussex, WI 53089, Test Cell Design, Construction, & Installation. Back in the 18th century James Watt was developing steam engines and wanted to come up with a unit of measurement that would indicate the amount of workhorses the steam engine would replace. However, since stroker engines can be expensive, do you really need the extra inches to make 500 street-friendly horsepower and 525 lb-ft of torque? Next divide each side by 5252 and you end up with this equation: Because of this math, lb-ft of torque and horsepower will always be the same at 5,252 RPM. The heads come completely ported and fitted with very light, hollow-stem 2.00-inch intake valves and 1.55-inch sodium-filled exhaust valves. With the right street converter, this combo will push any 3,500-pound car into the mid-11s and do it with a 3:55 gear. var d = parseFloat(form.gt.value); return formatvalue((((form.rpm4.value * form.tire4.value) / (form.rear4.value * form.trans4.value * form.mph4.value *336))-1) * 100, form.rsize); if ((ch < "0" || "9" < ch) && ch != '.') return formatvalue((form.rpm13.value * form.cid13.value) / 3456, form.rsize); form.ratio.value = "Invalid"; We know that Work is achieved when there is Force and Displacement. var a = parseFloat(form.bore.value); } form.tire8.value = ""; } Coast uses the AFR 205 street/strip heads that flow 306 cfm right around 0.600 lift. You asked for it. Johnson suggests the use of Edelbrock Performer RPM cylinder heads. form.rpm8.value = ""; I use the same intercooler (actually a PFM brand), but my exhaust manifolds are the OLD iron rear exit log manifolds. I think 550 is a little high. function findet1(form) This tool is very accurate for displacement calculations. We understand the importance of quality automotive electrics, especially when these products are to be an integral component of your showcar or race car projects. else We will use a brake and a torque arm when measuring the torque of an engine. While you are there, a cast 4.250-stroke crank, instead of the stock 4.000-inch, is available for $259, and since the Rat is externally balanced, you are going to have to pay to balance the rebuilt engine anyway. This site uses Akismet to reduce spam. {{calculation.findHorsePower | number : 0}} HP = {{calculation.torque}} lb-ft. x {{calculation.RPM}} RPM / 5,252. Required fields are marked *. You can also step up to a Ford Motorsports block for another $1,000 to get the thick walls, one-piece rear main seal, and roller cam in one package. return rounded.substring(0, rsize); Intercooler on your set up should be worth a bunch in power vs a non intercooled motor. for (var i = 0; i < str.length; i++) { if (x==11) Predict Elapsed Time and top speed for 1/4 mile or 1/8 mile runs. function findquarter3(form) Stock, which is 3.250 inches and will fit a 421, 428, or 455 block, or a 3.00-inch-diameter that will fit into a 326, 350, 389, or 400 block. But is it? The 408 will fit in your Fox-body or Cobra kit car with a cowl hood, and there are off-the-shelf headers for '64-'66 Mustangs. Then you just drill and tap for the lifter galley spider. By continuing to use our site, you agree to their use. lets use headers for example unless you can specify primary diameter, primary length, collector type and diameter, Robert parseFloat(nines.substring(0,rsize)+".4")) If you would like to purchase this cam or if you have any further questions feel free to call me at 1-800-365-9145 EXT 593 or just e-mail me at [email]GRollins@CompCams.com[/email]. name.value=""; EdelbrockTorrance, CA800/416-8628edelbrock.com, Jim Grubbs MotorsportsValencia, CA661/257-0101, Holley Performance ProductsBowling Green, KY270/781-9741holley.com. I cant dyno my engines but need to get a reliable guess what horsepower they are making, so I can have better info for choosing props. Solid roller cam 850 holley . newValue = newValue / 100 Coast High PerformanceTorrance, CA310/784-1010coasthigh.com. { var f = 0; Larger headers only hurt the average power with no plus on the horsepower end. You can compare up to four cam cards. return formatvalue((form.rpm6.value * form.tire6.value) / (form.mph6.value * 336.136 * form.trans6.value * ((1 + (form.conv6.value / 100)))), form.rsize); Power is how much work can be done in a period of time. Exhaust opens 56 degrees BBDC and closes 4 degrees ATDC. form.rpm7.value = ""; JavaScript is disabled. Coast always uses Probe Industries 1.7 roller rockers to enhance the valveguide life and tops the combo off with a Speed Demon 750-cfm carburetor. } In other words there may be a guy on here that trap 114 but has 490 hp (3,800 pounds) but has 4.56 gears (better power band management) or really good launching/driving, stick vs auto etc. if (num < min || max < num) { Rest assured that with MGI, there is no shortcut to quality. This tool is a very accurate tool and can be tremendously helpful. In previous articles, weve talked about the importance of Considering Individual Timing Events When Choosing a Cam to help us determine the duration, lobe separation and advance needed. The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252. To enter head gasket displacement volume, in the "Gasket Thickness" field enter ".0001". var n7 = 0; { } Maybe it is 500-525 hp - I defer to you. Xtreme Energy Cams bridge the gap between Magnum street cams and race only cams. We have done 30 lb-ft of work. I think it was Desk Top Drag I typed in the different coefficients and with every thing else the same the Corvette would cross the line like 2 mph faster and like maybe a tenth I think. alert(msg); } input.value = "" + eval(input.value); Here is a selection of tools we hope you find helpful. if(x==9) Hence, there are 2 radians in every revolution. Lunati ground the cam using some lobes designed specifically for the Chrysler lifter. return formatvalue((form.newheight12.value / form.oldheight12.value) * form.origratio12.value, form.rsize); For a camshaft, we're going with a Comp mechanical roller XR274 grind that will spec out at 236/242 at 0.050-inch tappet lift with 0.564/0.570-inch lift with a 110-degree lobe separation angle. On a dyno, this combo made 527 hp and 557 lb-ft. Pontiac 455ciAt 4.210 inches, the Pontiac 455 has one of the largest factory strokes available. The cam choice is the Crane 248/256 at 0.050 duration hydraulic roller with 0.595/0.605 lift ground on a 110 lobe center. Rev range 5000 _ 7000 . Then combine the gasket displacement ccs with the "Head" ccs. As for a camshaft, Miller recommends a DMR-spec flat-tappet hydraulic with 244/246 degrees of duration at 0.050-inch tappet lift with 0.534/0.544-inch valve lift at a 1.6:1 rocker ratio with a lobe separation angle of 113 degrees installed with the intake centerline at 110 degrees ATDC. This is the first component in overlap and the most important to idle quality. if (x==6) } This tool is a work-in-progress and is. return formatvalue((form.rear7.value * form.mph7.value * 336.136 * form.trans7.value * ((1 + (form.conv7.value / 100)))) / (form.tire7.value), form.rsize); The cam was ground with a 110-degree lobe separation and an intake centerline of 106 degrees. The bad news is that you just don't see them laying around like you used to. var ch = str.substring(i, i + 1) These gross horsepower figures came from engine dyno results in which the tested engine had no real-world accessories attached such as power steering pumps, smog pumps, and or A/C compressors. } form.ratio.value = 0; If we hold a 10 lb. When using the tool for engine size calculations only you can put most any reasonable numbers in the fields that are used to calculate compression ratio, but you must put something in all fields for the tool to work. I have some baseline info on what Merc rated my engines at originally and how they differ from original. } In a blown engine, the larger the overlap area, the more the boosted charge is being blown straight out the exhaust tailpipe without being compressed in the cylinder. } to see the affects on compression. Do Not Sell My Personal Information -, By logging into your account, you agree to our, Axle/Gears: Ford 9"/31 spline spool/4.86, they found him 6 hrs later!

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