A 632 Big Block Chevy Is The Perfect Fit For This '77 Tow Truck Sleeper - Engine Power S7, E12

i'm mike galley thanks for watching if you want to stay connected for more engine power just click the subscribe button below the carcass shop is working on a tow truck we can't do anything about the way it looks but we can definitely change the way it runs hey everybody we're hanging out in the big old staging area here at power nation studios with jeremy and jimmy from carcass now they want to talk about some plans on a project they have in the works now these guys throw all the rules out the door when they build their project vehicles and they put together some pretty cool rigs but since pat and i do supply a lot of the engines for the projects around here we have a little idea of what they want to talk about now the idea of having us build another engine for these guys is pretty obvious look what we have sitting in the studio but we are going to listen to them because they always have some sort of crazy ideas they're throwing around tell us about this so we were brainstorming and this is what we came up with you know when you see a tow truck you associate it with being slow and they're always helping people why not take something that's extremely slow make it go really fast but still help people by bringing them enjoyment as it rips down a drag strip i like it already and even cooler than that the previous owner right before we bought it he went on a 200 mile round trip towing somebody so this truck is still fully functional but we just want to amp it up a little bit maybe involve some nitrous this happened on the 200 mile trip right here they are flirting with disaster there's a i think there's a song about that but uh tell me about well obviously the engine do you know anything about the engine or anything like that i know nothing about it i don't know what's under the hood it's a small block but i don't know how big or what size this thing's gonna make pretty decent power if you leave everything like it is on this truck you may have some issues oh we plan on doing some major drive train upgrades um we got to do a little bit of frame repair the truck's a 77 it's been around the block a little bit so we're gonna do what we have to do tell you what when you guys give us a number horsepower-wise we'll figure it out from transmission back on what we have to make speaking of horsepower lack there i'll open the hood on this thing i want to i want to see the end job that's scary is that tricky yeah you know that's the gm hood flex there look at that rig there's not a whole lot on there use that board you put that board in there that's why it was there probably one right so we have a iron-headed small block with an old-school intake manifold like an old-school single plane edelbrock avs2 now that's that's a that's a newer carburetor now is it just going to be strictly drag race or are you going to actually drive it it has blinkers and stuff can you actually drive it still or you want to drive it around sure yeah i think so i mean making it a street drivable truck would be nice too okay so that means pump gas pump gas which is fine and because you can make something run and uh um we can make some decent power it's gonna take a big engine but uh to go as fast as i think you want to go um it'll be big inch big block but still pump gas i i think we have something in the archives we can dig out if you you already know what i'm talking about so i think a lot of likes yeah yeah so uh all right well there you go let's go check this engine out another crazy ass yeah look at what you guys we gotta dig an engine out of the archives all right we do have a few laying around in inventory but i think this bad boy is gonna be your best bet here well it sure is big enough well 632 cubic inches of glorious big block chevy this had a life before this was slotted for a project at one point it was slotted for a project but you know we stay pretty fluid around here because well it's mostly because you guys because you change your mind all the time so uh but this one will be uh i think this one's gonna be great for what you're gonna be doing uh definitely has a ton of power now this is not a pump gas engine by any stretch of the imagination right now now it is it at some point you say we're going to detune it or defang it or whatever i don't consider that we're repurposing it for a for a specific application so we all have we have the parts to do it as well we have pistons the the cam shaft to reconfigure is still going to make a lot of power it's just not going to make it you know in a high rpm range with race gas this engine made 1020 and 830 pound-feet of torque and we turned at 7 500 before the thing that i love about it too is that it's gonna drop right into our truck because it's a chevy going into a chevy yeah there's not gonna be a lot of fabrication other than the exhaust i don't know if you can fit a uh two and three eighths to a two and a half inch stepped exhaust uh a little little tiny header on it like that in the truck but uh you're gonna have to do something a little bit different there but but as far as the pan as far as getting everything hooked up no problem with how heavy the truck is it's a hell of a lot of torque you know and that's what you guys are really looking for to get that big old thing moving yeah and we're gonna with changing the cam up we're gonna move the torque curve way down you guys said you were gonna help out you could come give us a tow or anything right you saw how hard this thing is to pull out of the hole if you guys want to roll it into our disassembly area we'll get started yeah if you're gonna go ahead and push them yeah comfortable strong strapping young lads you grab a header i'll grab a header help help an old guy out holy cow it's pretty i don't know if it's too pretty to go in our truck this this away i'm glad i didn't have this definitely heavy yeah you have to parallel parker backer in here thanks for the direction mike that thing is so big it barely fits in here it looks cool that's like a awesome that's an awesome engine right there [Music] coming up a new camshaft and pistons make this big block a perfect fit for the tow truck how do you know if you need a high volume or high pressure oil pump the answer is in today's tech tip most street engines even high performance ones don't require a high volume high pressure oil pump a standard volume standard pressure oil pump can do the job a high volume oil pump is necessary if you're using an external engine oil cooler or a remote mount oil filter a high pressure oil pump is also recommended for racing engines to ensure adequate oil circulation at higher rpms we're continuing our 632 big block chevy which is going from a high compression race engine to a streetable but powerful tow truck bullet before we pull out the valve train we'll check the spring pressure with this lsm pressure tester we picked up from summit racing equipment in addition to parts summit offers high quality tools for engine builders this particular build will reuse the majority of the parts already installed so we're giving everything a careful inspection to make sure nothing looks damaged or compromised keeping everything in order will make reassembly much easier and ensure the engine runs its best parts develop a specific wear pattern over time and putting everything back in the same place is crucial for reliability the oil looks good which indicates a well-running engine the foundation we will still be using for this build is a tall deck 632 cast in the usa block from blueprint engines it gets clean in our jet washer for about one hour at 150 degrees we wanted a color that would complement the paint job on the chevy but still keep the general motors themed we chose gm blue now that the block has been cleaned and repainted we can start the assembly process and as you can probably figure out we're reusing the majority of the parts but we are changing things because we are going from a race gas engine to a pump gas engine so we have to change the compression ratio to start we are changing the rod and piston assemblies back to what it came with originally now we are taking literally five points of compression out of the engine from 15 to 1 down to around 10 to 1 for pump gas also that means we are changing the camshaft as well the operating range of the engine will be changing so because we're not turning a bunch more rpm we're gonna take some camshaft out of it that's not gonna mean that it makes a whole lot less power though you'll see but everything else is in very good shape and we're gonna use 90 of it so let's get started the previous application for this engine was high horsepower for a short amount of time on race gas so we put some really really good parts in it gesso belt drive gesso valve train trend push rods and comp solid roller lifters now these will all stay because those won't change the operation of the engine itself we're just changing its range i've also taken and cleaned up the bearings and put them back in the main bearings are perfect and we're going to reuse them and everything is in good shape we will have to put new rod bearings in because we are changing the connecting rod [Music] permatex ultra slick assembly lube goes on both sides of the main bearings with the caps snugged up they are torqued to 100 pound feet [Music] crankshaft end play measures at a comfortable six thousandths [Music] with the crankshaft in for good it's time to focus on the camshaft now remember because we are changing the engine's operating range and its fuel we have to take some camshaft out of it but because it is 632 cubic inches it's gonna sound like it's still a big cam but it's gonna be more suited for our application the one coming out is 285 and 350 with over 800 lift a little extreme for what we're doing so we are switching up to a cam that we had in a different pump gas big inch project this camshaft is 274 on the intake 284 on a 114 and it has around 770 lift much more suited for our application the gessel hub adapter goes back on and the cam is ready for installation it's a custom grind comp cam that was previously made for a 572 inch pump gas build this cam also has a 47 firing order swap the billet timing cover with an o-ring seal slides back into place and the belt drive is reinstalled finally the cam is degreed it comes in at 110 degrees intake center line which is four degrees advance coming up the big block decompresses a little the biggest change we are making to this engine is the static compression ratio remember this was a race gas engine with 15.03 to 1 compression because it has a 42 cc dome on top of the piston we're going to be reducing that by 5.46 points of compression with a 14 cc dish now that does a couple of things one we can run pump gas because we don't need all that octane to keep it away from detonation two it widens a tuning window because i am sure these guys are gonna hammer that nitrous and we want a tuning window that will keep them out of trouble so we're gonna put these in the bearing clearance has already been set with new clevite bearings at 25 to 27 10 thousands with the pins and skirts fully lubricated we'll drop the pistons into our arp tapered piston ring compressor at 4 600 more then tap them into the bores they have been refinished with a 320 grit ball hone to promote good ring seal [Music] we're using arp 8740 rod bolts which are torqued to 90 pound feet to achieve the recommended stretch of 59 to 63 10 000 we'll check this with our arp rod bolt stretch gauge every bolt is checked not just one or two using a feeler gauge we'll check the rod side clearance it comes in at 20 thousands the melee high volume oil pump drops in and the fastener is torqued to 60 pound feet permatex right stuff one minute gasket maker secures the oil pan gasket and the oil pan is bolted down [Music] the ati super damper is installed with our matt go balancer installer kit before the heads go on true tdc is set on the pointer using a piston stop [Music] the comp cam's heavy duty solid roller lifters go back in their respective lifter boards the felpro mls gasket with a 53 000th compressed thickness drops on followed by the afr385 magnum competition series racing heads the arp stud installer makes quick work of tightening up the fasteners they are torqued to 80 pound feet the trend 130 thousandths wall chromoly push rods slide in followed by a set of gessel sportsman series shaft rockers the ratio is 1.8 the lsm valve lash tool lets you tighten and torque the rocker adjuster in one step cold latch is set to 14 000 on the intake and 16 thousandths on the exhaust the edelbrock super victor 2 intake manifold is designed for high flow 1000 horsepower plus drag race applications it features 5.38 square inches of runner area at the plenum comp cam's valve train assembly spray penetrates deep into the rockers and springs making sure they don't run dry on initial startup the summit cast aluminum polished valve covers seal up the engine nicely so the moroso crankcase evac breathers can do their job finally the msv crank trigger provides incredibly accurate timing [Music] and with the summit pro flow water pump in position we're off to the dyno cell [Music] if you have a late model chrysler power plant check this out this is the new holley terminator x gen 3 hemi kit designed for 2007 through 2013 plus engines it ships pre-loaded with base maps for common gen 3 hemi engine combinations to get your vehicle on the road or track fast the 3.5 inch touchscreen includes a calibration wizard as well as tuning and gauge display functions plus data logging also a bosch wideband o2 sensor provides accurate readings and precise tuning control nitrous and boosted applications are fully supported plus there are four inputs for things like electric fans progressive nitrous control boost solenoids and much more this system has a ton of features go to holley.com to find out more the ford coyote has become a very desirable engine for all types of swaps nowadays now if you want to do that for yourself or just replace a tired old engine in your daily driver look no further than powertrain products 5-liter coyote the block and heads are both made out of aluminum and the engine has been updated to improve performance over the factory design powertrain products addresses known oem problems and re-engineers the areas for better durability and performance the engine comes with a full gasket set and the oil pan and timing cover are pre-installed included in the price is powertrain products five-year promise warranty head over to shopengins.com to find out more up next the 632 is truly the right tool for the job all right our 632 is anchored to the dyno and remember we have taken five points of compression out of this for pump gas and because it's for carcass we have someone from carcass here i'm so excited to run this thing man all right me me too i think you might be as excited as i am why are you all dirty oh i've been sanding all morning and that's just kind of how it goes that bodywork stuff that's not that's that's not for us here yeah all right let's see if we can light this thing what do you think yeah let's do it man yeah that's what i like to hear okay that's what i like to hear man all right so this engine's a little bit on the unique side and here's why you guys wanted to use this for pump gas driving around drag strip and you said you're going to spray it so yep i intentionally knocked compression way down the static and pressure ratio was 9.56 to 1. and i have a gigantic cam in it for that kind of compression ratio this is a 274 284 on a 114 this is essentially if i was going to build a nitrous race cam this is what it would be because you want if you want the engine make a bunch of power you got a camera for that amount of power but it's weird because if you're doing it for nitrous just running around this is going to be probably a little bit too big of cam if you were just going to be naturally aspirated only sure we're not there we're going to we're going to actually probably spray in the truck so uh i have 30 degrees of timing right now i'm going to make the poles from 4 000 to 65. first pull i'm going to make it 600 per second just to make sure the engine keeps its guts okay what do you think it's going to make ah 785. i like the way you think [Music] [Music] that sounds dang good i'll tell you that oh wow where'd you see what was going to make 8 30 jeez man 8 28 at 6 300 731 pound feet of torque at 5 000. we have already achieved our goals and that is with 30 degrees of timing we could put a way shorter cam in it say you could put a 250s at 50 cam in it and the torque would be way higher but what happens on pump gas something this big with that kind of cylinder pressure when you load it for extended amounts of time this will become a detonation machine if you wouldn't put good gas in it this would actually detonate and really be detrimental to running the engine i purposely put this big cam in it so it bleeds off cylinder pressure at lower rpms now it's going to have lower torque i mean it's at 4 000 rpm you know it's still making 638 pound-feet of torque yeah that's not much at all and so people are saying that big cams are dogging on the street i guarantee you this is not going to be doggy anywhere yeah okay so before i make any changes what i'm going to do is i'm going to make a pull at 300 rpm per second because that does load it more like it's in the vehicle okay so that's what we're going to do so is that loading it harder than 600 yes absolutely it loads it harder okay so i was just hoping for 800. this is exciting i kind of knew what it was going to be yeah yeah [Music] 826 for power not bad at 6 300 734 pound feet of torque at 5400. that's crazy man that's that's pretty mean right there you can tell a lot about how an engine is running by looking at the spark plugs after a full pull at 300 rpm per second we see no damage and the plug looks clean giving us the green light to increase ignition timing that looks really nice we'll advance the crank trigger 2 degrees for a total timing of 32 degrees [Music] [Music] so 839 6400 735 pound feet of torque yeah i can't wait to get this thing in the truck and see what it can do it's going to be a little scary i think this is one of those things where we can get the tune on the razor's edge that is what you don't want on a street engine you want you want something that uh has a good average that uh if you're gonna miss you always miss on the rich side if you miss on the lean side it's going to cook something if you miss on the rich side maybe it'll drop power maybe you'll follow some plugs we'll add another 2 degrees of ignition timing for a total of 34. [Music] [Music] we did it that's what i was looking for right there eight fifty that's a good even number today that's a nice good even number to stop now i'm gonna uh make sure everything's all cool and uh pull this thing off and uh the next time you'll see it i'll be rolling into your studio that's rad yeah i can't wait for more information on anything you've seen today visit powernationtv.com

Channel: POWERNATION

Views: 368,578

Rating: 4.918839 out of 5

Keywords: Car, PowerNation, howto, how-to, diy, automotive, cars, trucks, automobile, do it yourself, automobiles, auto, 632 Big Block Chevy, chevy, big block, engine build, horsepower, tow truck

Id: foM65eX5Qwg

Length: 21min 38sec (1298 seconds)

Published: Sun Sep 13 2020