Tearing Down a Pair of 351 Small Blocks: Windsor vs Cleveland - HorsePower S16, E10

[Music] this week's horsepower begins with a treasure hunt a special treasure buried somewhere in this salvage yard no it's not gold but it is made with metal check this out Joe a two-door 66 New Yorker it could be yours in shape in our case we're looking for precious metal out here you see we've gotten the lead that a candidate for our next project engine could be right out here it's a very sought-after kind of rare engine from Fords glory days of the muscle car that's when many a muscle machine was powered by one of two 351 small blocks one is Cleveland only late for five years but legendary because of its amazing high compression has the other the Windsor is less exalted but still a performance tall workplace to a long production run and tons of aftermarket parts actually we're on the hunt for one of each and our hunting ground is a place called CFC and Middle Tennessee where if it's made of metal it's made to reuse anything metals the business started with aluminum can recycling and they still process those two why there are several thousand each of those blocks but nowadays you'll mostly notice a sea of vehicles people bring in for cash but the cars damaged the interiors tore up and there's no motor transmission it's it's gonna be scrapped like this truck destined for downsizing and the crusher that's the fate of about half the vehicles brought in with the metal ship to foundries around the nation and the other vehicles it's probably 60% of the cars we that we get are go to the pickup pool yard well that's where this Mustangs headed after the Greene treatment that is which involves removing all the fluids fuel oil everything well a lot of parts off of this Mustang yes sir the Mustang will join about 1200 vehicles in the picking pool yard a great place to find good news parts on the Cheetahs lot of parts they're looking for parts you can't get it at local parts houses or you have to go back back through the dealer so they're they're really happy to find those parts not have to pay the premium prices customers plopped down to bucks with part of money going to charity then they're free to browse the ever-changing inventory for things to buy we've had them come in and just and stay all day long from 8:00 till closing well there's no parts inventory they do list the vehicles and where to find them John saw several good prospects for the 350 ones on our wish list we think our chances are better here because yards in the city tend to get picked over quicker something to keep in mind when you visit a location like this once you've found what you're looking for take a walk around the yard and look at some of the odd stuff if you don't know what this is it's a 51 Ford truck one engine was popular back then the old flathead and this thing's original even down to the wire looms Windsor's wound up and a lot of pickup trucks fortunately this f250 was no exception there's nothing worse than being at a yard like this pulling apart and not having the right tool to finish the job so we went ahead and laid out everything we like to bring so we know we're going to get what we need out the first time now something else to keep in mind certain yards don't allow certain tools like cutting torches electric power tools or jacks so make sure you check that before you show up now one thing I like to bring no matter what part I'm pulling there's a piece of cardboard to lay on while Mike with this cardboard mat goes down under to free up the John gets busy on top freeing up the engine the salvage yard does provide a roll around engine hoist which the guys put to work pulling the first of our two 351 fine that's right about 40 yards away was a once-proud 71 for to ltd land yacht with an apparently good 351 cleveland between the fenders alright now here's a great sign 351 cleveland clearly on our identification tag but that's not foolproof what we need to do is look at the bell housing bolts if it's for small block it's a cleveland if it's for big block it's a modified series and as far as the differences on the internals we got to wait till I get back to the shop for that with both 350 ones we just hauled from the salvage yard and during the teardown you're gonna see some of the key differences and similarities in the Windsor and the Cleveland here but first a few more clues as to which one you're looking at when you go browsing in the boneyard first water neck it goes right into the block on a Cleveland but on the Windsor the water neck goes right into the intake manifold you'll find eight valve cover boats on a Cleveland but on the Windsor there are only six finally at the Cleveland uses fourteen millimeter spark plugs the winds are larger 5/8 inch boy we'll start the teardown by removing the valve cover first then the distributor hold-down and distributors themself big difference in distributors notice how the Windsor has a lot more length between the collar and the bottom of the gear drive and to the main body although just notice the Cleveland's gear is a lot thicker now this thing was set up for EFI of course the Cleveland's distributor what's in vacuum advance for good old corporation next to come up with a little persuasion the intake manifold Windsor is made of aluminum the Cleveland which needs a lot more persuasion is made of cast iron they actually don't share any similarities now the Windsor actually ran water through the intake whereas the Cleveland never did now to keep from getting heat soaked they actually ran a one-piece steel intake gasket with a valley trade built in now the Windsor is obviously set up for a multi-point fuel injection whereas the Cleveland never was it's a two-barrel carburetor setup now even with that they're probably going to have a little bit better power potential looking at those big ports now one more comparison just because we can we'll go ahead and check the weight differences that's an extra six pounds the two engines do share the same rocker arm design non adjustable pedals full mount they're all from the push rods and check these out small splash shields bolted to the pedal stroll on the Cleveland built into the rocker arm on the Windsor stock rocker ratio for the Windsors 1.6 Leyland at 1.7 under the rockers things do change Ford engineers designed the Cleveland head with the same bore spacing and head boat configuration as the Windsor it houses a canid design that allows larger valves to be used in the same 4-inch for this also made it possible to vote Cleveland heads with light machine work to Windsor engines in 1969 Ford did just that with a boss 302 all Windsor engines use a two Val per cylinder design the valves are inline and Ford's were noted to V or 4v and that was not the valves per cylinder but the number of entries in the carburetor port shape on the exhaust and intake runners is rectangular they measure one inch by one and a quarter on the exhaust and one inch by one 852 on the intake and 95 this wins are made 210 horsepower this Cleveland has two V hits which have oval exhaust runners measuring intake forty by inch 380 the intake runners are oval as well measuring two o twenty and six fifty and seventy two that Cleveland made two hundred and forty eight horsepower back to the Windsor heads now our exhaust came in an inch for fifty and our intakes came in an inch 780 and we've also cc'd one of our combustion chambers at 61 CCS our Cleveland's are clearly larger with a 204 intake valve and an inch 650 exhaust valve diameter now let's measure their combustion chambers start out by greasing the head to seal up the CC plate next we can fill the beaker with alcohol and align it with the hole in the plate now open the petcock can let the chamber fill the fluid making sure all the air is out this one has a seventy nine point nine cc volume making it a 1972 VIII head the pumps are very similar in shape and size they do however have different boat patterns this could be one reason this engine was in the salvage yard all this silicone here no doubt could block water and cause a serious overheating issue the balancers are next both engines are externally balanced and that can be seen by the large counter weights on the back the pans are both stamped steel wenzer has 22 fasteners securing it and a small front pan seal lip the Cleveland has 20 fasteners and a large front pantsy lip using a wire brush we're cleaning the casting number area of the block our is a D - a E - CA that lets us know it's a 72 to 74 Cobra chat block now ours has two volt mains with provisions for the other two only the Q code engines came with four bolt mains the Cleveland has the timing cover cast into the block a metal plate houses the timing pointer and seals the oil pan and cranks now check out loose this Cleveland's chain is this puts a new spin on the term variable cam timing an eccentric on the camshaft spins to raise and lower the fuel pump lever the block also has a provision for the fuel pump back on the Canadian the Windsor uses an aluminum timing cover that also houses the timing pointer no fuel pump either it was designed for a fuel injection and had an electric pump in the vehicle the chain is very similar to the cleveland both engines use a front mount wet sump pump they're secured by two bolts and are turned by a shaft that also rotates the distributor good start but there's a lot more to come off that is both engines after horsepower successful salvage yard search we've got two Ford 351 so far the teardown tell us both the Windsor and Cleveland are basically good stock cores we'll start with the Cleveland now which uses a template to hold the camshaft in place it's got hydraulic flat tappet lifters that align themselves some have mushroom faces forced out they'll damage the lifter bores we raise ours so they'll clear the cam lobes and let us remove the camshaft okay now we could push the lifters through the pores and into the crankcase the Windsor uses a cam plate to this setup is a hydraulic roller the lifters are held in place with a lifter retainer and litter guides and they keep the orientation with the cam lobe correct here's the difference for the lifters tappet versus roller however they both share the same bore in 875,000 3/8 inch rod bolts hold the caps in place and the Windsors big in diameter is 2/3 21 inches the rod bearing shows signs of excessive miles the cleveland also uses three-eighths inch rod boat and as a smaller rod diameter on the big end up to 311 it's been rode hard for a while but it looks okay just marrying has dark green coloration and several pitting spots that's a sure sign of oil that has been diluted by fuel the corrosion that causes can also pit the crankshaft the Windsors rods are a factory forging the measure of five 956 inches their pistons are a hypereutectic designed with a dish and compression ratios nine point one to one with a 63 CC combustion chamber now the cleveland cousins rods are also a factory forging but shorter at five seven seven eight their pistons are a cast design also with the dish and compression ratio of the 2v head is 7.9 to wore all winters have to bolt mains its crankshaft is a cast steel piece that's externally balanced our main bearing has even wear on 80% of it a bad spot like this is called awesome we're an indication of a misaligned prank orb or the main journal diameter is 3 inches our Cleveland's - boat main caps can be removed first followed by the cast Craig which sits in a - 749 main journal although smaller they do not sacrifice any string just like our rod bearings these main showed the same signs of fuel diluting the oil there you have it - for relatives compared side-by-side it was well worth the mess next step short trips to local machine shops you're watching horsepower for a DVD copy of this episode just go to power block tv.com and order your copy for just 595 plus shipping and handling start your own horsepower collection delivered right to your door from the power block more than a commercial break has passed after two weeks of machining on our to 350 ones our Cleveland's back for the first of two builds the machine work was handled at a shop we visited back in the pre dyno days of horsepower about eight years ago we went to Tommy's Auto machine in Springfield Tennessee to use their dyno to test a 347 stroker motor we had just built in addition to the usual work here's what else they did to restrict the camshaft so the bottom end gets more oil they installed a set of oil restrictors from Ford Racing in the two three four and five mains to restrict the top end from the lifters up to the valve train these lifter bushings were installed that allows you to true up the lift or more clearances with all that machine work and our parts combination we're gonna raise the compression ratio of the cleveland from seven point nine to one to ten to one and that ought to be good for about 400 horsepower on pump gas that's twice the factory rating plus we're gonna dyno it with these 2v heads that came with it then swap them for some 4v heads to see how they compare meanwhile the bill starts with this hydraulic roller from Cup it's a single pattern cam which means intake and exhaust are equal lift is 566 duration at 50 thousandths is 224 we're using cleave I bearings we ordered from rockauto.com for this entire build the factory cast cranks going back home it was ground 20,000th on the mains and rods along with balancing and polishing new ARP studs or going into the base caps for added insurance and after torquing them down we can check in play and at eight thousandths were right in the middle of where we need to be here's the original cam plate and here's the one we're going to be replacing with from comp look how far we've evolved this one actually comes with the Torrington bearing to help against wear and rotating assembly drag it was made to work with their race ready high-tech time and set which comes with double chains oversized rollers and you can advance and it four degrees now for connecting rods we actually kept the factory length but upgraded to an H beam Eagle design now four Pistons we went with a forged flattop with eyebrow release four Cleveland cylinder heads but the total seal rings top it off now for old rings we just went with the low tension set with a set of stainless scrapers for a second compression ring we went with a Napier design which has got a funny-looking seven cut out of it now for the top compression ring we went with the gapless now that's the two-piece design that when you put them together will make big power with the number one piston and rod installed we can go ahead and check our cam then go ahead and install the rest of the rod and Pistons after installing a new timing cover we can go to the bottom side and install a basic part store old pump and a pickup from male dawn made to match the sump depth to their 7-quart Street strip oil pan the balancer is an SFI approved piece from Pioneer our head gaskets like all the others came from rockauto.com these are felt pros with a compressed thickness of 40,000 s at the machine shop our cleveland heads were milled fitted with new guideline errs behind springs retainers and locks they gave them screwing studs and guide plates plus a three angle valve job for the new stock size for a of stainless valves this is gonna be a great stopping point for me because I've got to go ahead and get a push rod order in before next week that's when we're gonna go ahead and finish off the cleveland get the Windsor done which is getting a completely different makeover then take both of them to the dyno room for an all ford shootout we'll see you next week

Channel: POWERNATION

Views: 1,276,726

Rating: 4.8422723 out of 5

Keywords: 351 windsor, 351 cleveland, Automotive;, Cars;, Vehicles;, How-To;, Auto, News;, Howto;, How, To;, DIY;, Car, Tips, powernation, small block, engine rebuild, automotive, do it yourself, automobile, clevor engine

Id: x5e5-5KsTQ4

Length: 16min 58sec (1018 seconds)

Published: Wed Oct 30 2019