Building Up a New 6.4L Gen III HEMI For Reliable Muscle Car Power - Engine Power S8, E16

[Music] you're watching power nation watch out ls the gen 3 hemi is quickly becoming a very popular street engine with plenty of aftermarket support today on engine power we build one from the block up and then hammer down on the dyno smooth dang that's pretty nasty right there hey everyone today on engine power we're going to be building an engine that has grown in popularity in the last several years the gen 3 hemi now since this engine has come to rival even the ls holly has gone ahead and created an entire line of parts specifically for it everything from induction to fabricated valve covers oil pan swap kits accessory drive components but most importantly stand-alone fuel injection now we've already gone ahead and painted all our components and our colors of choice black and purple so they're all ready to go on our brand new engine for this particular build we wanted to use all new parts so we contacted our buddy mike copeland at arrington performance in brighton michigan and he hooked us up with everything that we needed to do the long block it starts with a factory fully machined 6.4 liter gen 3 hemi block now these gen 3's have some pretty racy features right from the factory like a raised cam tunnel a very large bore 4090 and a skirted block with cross bolted mains as far as the crankshaft the stock crank is a factory forged unit at 3 720 stroke combined these two can take a bunch of power in stock form moving along we also have a set of 6.4 liter gen 3 hemi heads these heads have a tight chamber very large valves and flow around 340 cfm which is as much as some aftermarket offerings for the other brands one thing we are upgrading over the stock componentry are the rod and piston assemblies now there's nothing wrong with them it's a hyper eutectic piston and a powdered metal cracked cap rod and they will take some abuse but we wanted some heavier duty pieces for what we are doing arrington has custom pieces made that drop right in a 6.4 without having to rebalance it that includes a custom weisco 2618 forged piston that has horizontal gas ports and coated skirts also a set of manly 4340 forged h-beam rods with a 6-200 center to center length we love working with the folks at arrington because no matter what level of project you have they have the right parts to get it done or if you want a complete engine built or go the extra mile and get a complete vehicle they are the ones you want to see if you want to go fast with a mopar and the best part about all of this we are going to be giving this engine away to you a lucky viewer we have teamed up with holly and we will be giving this engine away after it's all done so enough for the talking let's get to building [Music] we begin with a fresh set of factory mopar main bearings as always we check the clearance on all of the mains with the arp fasteners properly torqued the first one comes in at two thousandths of an inch which is within the factory specifications the rings are filed to fit we're running them at 25 000 on the second ring and 23 000 on the top as per weiss goes spec for our application we seat them correctly into the cylinder using an arp ring squaring tool then use a feeler gauge to confirm the gap the gauge should fit into the gap with little effort yet still be tight enough to stay in place under its own weight we have all the rods numbered cleaned and the bearings installed so we'll go ahead and check rod bearing oil clearance when you torque down a fastener you stretch that fastener to a certain amount the arp digital rod bolt stretch gauge gives you a precise readout of that stretch after the gauge is zeroed out we'll torque the rod bolts to ninety pound feet this stretches the fastener by five thousandths of an inch exactly what we're looking for rod bearing oil clearance with factory mopar bearings looks fine as well all of ours come in between 19 and 21 ten thousands [Music] this hemi uses a set of oil squirters to cool the bottoms of the pistons they are a must for high performance street engines assembly lube is applied to the main bearings and the crankshaft goes gently into place there you go thank you after getting some arp ultra torque lube the large main cap bolts are torqued to 80 pound feet [Music] the side bolts receive thread sealant to prevent oil leakage and they are torqued to 25 pound feet coming up the hemi receives high performance valve train upgrades fresh engine accessories and an efi system then it's time for business in the dyno cell now that we've got our crankshaft torqued down and fully installed we can move on to our camshaft and timing set components arrington performance also sent us one of their custom ground cam shafts that are specific to their engine packages this is a comp cams hydraulic roller with 225 degrees of intake duration at 50 000 lift 235 degrees of exhaust duration at 50 000 lift and 114 degree lobe separation angle we're also going to be utilizing our stock cam timing gear because it'll work great at our power level now there's a couple different ways you can approach this either limiting the phaser travel or completely locking it out like we chose to do this is going to help eliminate any problems later on with pissing a valve clearance when the engine is running then when we degree the cam we can set the intake center line wherever we want with a multi-keyway crank sprocket first the phaser spring is compressed using the specialty tool that comes with the lockout kit [Music] the cover is removed and the expanding wedge which locks out the phaser drops into position the pipe plug is tightened to keep everything in place the cover is torqued back down and the clamp is removed [Music] thanks for that i wasn't wearing my glasses [Music] so this center one is stock position and these other two are two and four degrees advanced either way so yeah advancing so we're we're gonna start in the middle and then go from there i like that uh what uh what kind of water won't freeze what what kind of water won't freeze i don't know hot water oh geez are you are you running out of jokes we've put together just one rod and piston assembly for now so we can degree the cam chamfer arrow yep directional these are directional because they have a little bit of a pin offset got it there you go there it comes in at 109 and a half degrees of intake center line which is four and a half degrees advanced with the rest of the rod and piston assemblies in place we break the bolts loose one rod at a time for final torque break these loose before you measure them that's very even if you they're just tight a little bit it will affect it right down to the ten thousandths of an inch so and so we snug them up so we can turn it over but really important to loosen them back up before you measure them for stretch yeah my boots are sliding after the rod bolts are torqued to 90 pound feet we have 53 10 thousands of rod bolt stretch on this one perfect once the rest of the bolts are torqued and checked the rotating assembly is complete [Music] a new oem oil pump comes next we use three 2 000 stick shims to ensure that it's perfectly aligned before tightening it down the timing chain gets a good coat of valve train assembly spray before we install a brand new car timing cover [Music] followed by an ati super damper which is held in place by an arp balancer bolt the factory non-mds hydraulic roller lifters are pre-assembled lubed and then put into position [Music] we are upgrading to comp cams conical valve springs and steel retainers we are setting the springs up at an installed height of one 985 which puts our seat pressure around 141 pounds and our open pressure is around 409 pounds the intercom digital valve spring compressor from goodson makes this job a snap this valve spring installation tool from powerhouse can be used in or out of the vehicle for easy spring changes [Music] up next rock solid reliable front accessories get this hemi ready for dyno testing one of the reasons we love using arp products is that they pride themselves on both high quality materials and precision machining but just as important as the fasteners themselves is their proper lubrication and installation arp provides specific instructions with each of their kits and if they're followed correctly can help avoid many of the common problems that you can have the first and most important step is to have all the fasteners and threads completely clean of any oil or debris then we can start applying arp's alter torque fastener assembly lube this was specifically formulated to provide consistent torquing and clamp loads we'll apply arp ultra torque directly to the threads and the underhead of the bowl when installing the washer it's important that the chamfer faces the underhead of the bolt to clear the large radius it's also critical that no arp ultra torque gets on the bottom side of the washer as it can turn it into a bearing-like surface possibly damaging the threads or over stressing the fastener and even breaking it we'll go ahead and get the rest of our bolts lubed and prepped and then we can get our heads on our 6'4 the holley oil pan kit includes a windage tray and oil pickup assembly after the pickup is tightened down we'll apply some sealant to the engine block mating surfaces finally the oil pan is bolted to the block it's holley's mid-sump design which is great for putting gen 3 power plants into older vehicles no gasket is required because the pan has an o-ring seal the factory cylinder heads come next they have a two 140 intake valve one 650 exhaust valve and a 65 cc double quench hemispherical combustion chamber with our factory mopar head gaskets we have a measured compression ratio of 10.18 to 1. the heads are torqued in three stages to a final value of 100 pound feet on the large bolts and 28 pound feet on the small bolts [Music] after lubing the factory length push rods they slide into place we're using the original rocker shafts but we're adding rocker shaft stabilizers and collars this helps make the valve train more rigid which increases durability especially at higher rpm and spring pressures the valve covers are mr gasket fabricated aluminum pieces they are complemented by these msd blaster series coil packs in black we are very close to getting our 6.4 liter hemi on the dyno but we still need a few components to finish it out we need an oem alternator for our holley swap bracket and obviously we need a new water pump we chose the duralast brand duralast is the most chosen aftermarket brand by professionals why because they manufacture and re-manufacture parts to oe quality or better starting with our alternator this is a quality remanufactured unit meaning duralast goes the extra mile in replacing every wear component inside and it is triple tested at the component sub assembly and finished product to ensure that it meets oem or better specifications our car style water pump is made from entirely new components from its precision machine casting new permanently sealed and lubricated bearings to its pulley also to send accurate data to our ecu we picked up some new sensors as well a new crank cam map and coolant temp sensor now even though this water pump looks great in its natural finish we have to paint it to match the rest of the engine so frankie's got a job to do [Music] first to go in is the cam sensor along with the crank sensor these are for a 2011 6.4 hemi our efi system can run with sensors from 2009 to 2012 engines [Music] the freshly painted water pump bolts up followed by the timing pointer holley offers several accessory swap component kits to work with factory car balancers timing covers and water pumps after the holley alternator bracket bolts down the duralast oe style unit gets installed [Music] the holley power steering adapter kit with the included power steering pump finishes up the front end [Music] up next free-flowing induction along with a high-tech efi setup make this hemi how [Music] as you can see we've saved the trickiest parts for last like our intake manifold and efi setup this is holly's high ram intake manifold and we've already gone ahead and pre-assembled it with our painted fuel rails our 105 millimeter throttle body and our 42 pound per hour injectors the great thing about these manifolds is that the tops are interchangeable so you can have a forward-facing throttle body a rear-facing throttle body you can put it to the side or you can even run one or two carburetors like we have before for efi we're using holley's terminator x max unit this is great because it's super easy to set up and you can run drive by wire throttle bodies and electronic transmissions it has a built-in one bar map or you can use the stock one bar map that comes with a hemi this unit comes with a ton of cool features including boost and nitrous control with programmable safeties and everything you need to get it hooked up all the programming can be done with the handheld or if you want to get deeper into the tune-up you can use a laptop and holley's free tuning software stick that on there you go the intake studs are torqued in two steps with a final value of 106 pound inches [Music] with our engine hooked up on the dyno and our wiring harness installed we're ready to fire it up okay here we go everything's hooked up i think it should start right up well should are you worried about what are you worried about gosh you old timers and fuel injection we always get some questions about engine braking we fully break in things before we start pounding on them we always don't always show that but we do so the biggest thing on this one obviously with a roller cam you're not going to break the cam in like a flat tablet but putting a little bit of load on it making sure your oil pressure is fine make sure we don't have anything leaking out getting up to tim make sure that uh the rings establish a wear pattern not only on the cylinder wall but on the ring land as well so what we got to do is we have to get it up to operating temperature so we can start learning start learning i just love how smooth it is right out of the gate i mean not even up the full operating temp yet and that unit is already keeping it super silky yeah we're like on the freeway in fifth gear right now it's making uh a solid 30 plus horsepower aftermarket efi has come so far in such a very short amount of time yeah i think i'm kind of spoiled on that front you know wow they're still making 3.75 [Applause] but that was super smooth on loading though for the first load in that's crazy nice look at that look how flat the torque is 479 pound feet of torque yeah and it's making 529 horse yeah and it's still going up over 400 pretty much 3000 and up yep that's awesome wow nice fuel pull a car along air fuel's tracking nice oil pressure is spectacular yeah all right this engine has good enough valve train we have the the stabilizer bars it's got really nice uh seating installed uh pressures on the on the spring got a nice spring on it i feel a little froggy here why don't we yeah crank crank that up just uh okay don't don't get scared because we're gonna go uh uh 3 500 to 7 000. oh that sounds nice smooth that's dang that's pretty nasty right there yeah look at their 562 horse 478 pound feet okay so we're gonna make that right at 69 7000. wow where's torque feet where to make 478. 5200 that's a widespread wow that's super wide now the wider you can spread the peak of torque and horsepower the better this thing feels right yeah when you're driving it look at that pretty graph let's put two degrees in it i mean it looks like it's at 26. pretty safe it's also up to 28. see what it does i like the way you talk [Music] [Music] might have snuck a little more a little bit 564.9 a little more torque yeah that's a nice engine this is very very nice this is going to be most likely a street engine so yeah this is something you could take that to the pump put 93 in it and not worry about it ever exactly how it sits so i like that i mean ls better watch out this is uh they're starting to grow on me just because they have a good architecture they have a great cylinder head like you were saying yeah and now that you have companies like holly that are making like these really nice parts that make them super easy to swap super easy to put in vehicles and have great clearance and they look great i mean i i know i painted it but i'm kind of biased i think it looks great so you don't go and twist your arm patting yourself on the back so i think it's i don't know they're kind of they're starting to grow in the efi i i can't say enough good stuff about something that you literally just plug in and it works hats off to holly and uh again i've said it before i am a little jealous of whoever ends up with this thing another success story so uh another good dino day nothing to do all right diner day dino days are the best days for more information on anything you've seen today head on over to powernationtv.com [Music]

Channel: POWERNATION

Views: 365,872

Keywords: Car, PowerNation, howto, how-to, diy, automotive, cars, trucks, automobile, do it yourself, automobiles, auto, powerblock, engine power, horsepower, engine build, 6.4L Gen III HEMI, hemi, muscle car, High-Ram Intake, dyno, mopar

Id: PYsSsjEjS0g

Length: 21min 35sec (1295 seconds)

Published: Sun Sep 12 2021