Just freshened by Gary Kinkaid and is currently being run in Duane Thorton's BORN INSANITY (ran one pass at 140 in 6.5 seconds). EngineLabs: What range of compression ratio and cam timing did R-M utilize on that engine? Early 500-inch Pro Stock engines using the old Bow Tie block had a bore around 4.600-inch. Reher-Morrison modified the short-deck Chevrolet marine block with debris screens epoxied over the oil drainback holes and O-rings in the decks. Engine has had a fresh rebuild. The larger bores also allowed us to use bigger valves. Transporters I oversaw the solid head project, and W. O. Simpson ran the machine. Nxtgen Billet LS Dry Sump and Auto Verdi 3 Stage Oil Pump $ 4,500.00 $ 4,299.00 . Parts & Acc, Open Wheel So, we contacted Reher and asked away, hoping he’d enlighten our readers with more insight into this captivating story about one of the true milestone engines in the history of racing. We put the engine back together, ran it on the dyno, and it ran better than ever. All the best gear used. Reher and machinist W. O. Simpson drilled out coolant passages and sealed up the heads with a bolt-on faceplate on the exhaust side before Shepherd, who handled the team’s cylinder head work, shaped the ports and combustion chamber to his liking. The result was a head with deeper valve bowls and the port walls moved over. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! Then we drilled and tapped the block for a longer rear main stud. But there was one stock production engine that came standard with 500 cubes: the '70-'76 500ci Caddy. He also outlines the options David Reher and Buddy Morrison had in those days and the strategy that led them to perform radical surgery on a rare set of solid (no water jackets) GM cylinder heads first developed for alcohol engines. Though this isn’t a high RPM screamer, this is a twin turbo derivative of the 500ci Pro Stock engine for use in NHRA Pro Mod competition. (For more on the first NHRA Pro Stock championship engine, check out this EngineLabs story.) Speedway When you purchase one of our Chrysler engines you are buying the finest turn-key drop in ready crate engine combinations in the world. We did a replacement block, but it just didn’t run as well. We relied 100 percent on what he told us. The major difference between the attitude of the big 800ci pro stocks and the NHRA 500ci cars is pretty simple. We were pretty careful, and we looked at that stuff a lot. EngineLabs: A new engine was built for the ’84 season. Get more photo about Cars and Motorcycles related with by looking at photos gallery at the bottom of this page. In fact, we had a valve facing machine and all of the equipment to grind valve seats in the trailer. He’d say, ‘It’s still hitting pretty hard on the gear change,’ and we’d back some more clutch out. Our original 500ci Pro Stock rod, used by Dick Maskin (DART) in his 1996 and 1997 engine program. Following are David’s answers, and along with a few photo outtakes from Voegelin’s extensive research. That test sure showed us where the oil went. When we put plates on our big-block heads, people just assumed that we’d raised the exhaust ports. Parts & Acc, Open Wheel Reher: After we won those championships, Chevrolet started to pay more attention to us. Reher: We back-cut the top and second piston rings to reduce friction and drag. Eventually Speed Pro made .170-inch rings available from the factory. Reher: You have to remember that we raced those engines before there were data loggers and computers, so that’s an open question. Name * First. BRE Dominator Carbs Stefs dry sump tank HRE Manifold Jessel timing belt drive Meziere water pump Bryant Crank Alloy rods CSP Pistons Alloy box sump Auto Verdi dry sump pump All new 500ci. Engines Today, the smallest bore is 4.715-inch with some running as large as 4.750. Reher: No, I really can’t. Sponsored Drivers, Sportscar 4x4 Rally RPM range 7500-10,000. The water pockets were concealed by aluminum port plates. The only problem we had was when we cracked the back of the block in our best 500-inch engine. So we took the original block, put it in the mill, and surfaced the back of the casting where it had cracked. How was it different than this one that ran in ’82 and ’83? 400ci TX1 Pro Stock Engine, Call for details: * Subject to USD ENQUIRE . Open Wheel Bodied Engine Parts & Acc Wanted. We wanted the solid heads to have a 100 percent stock appearance. Chevrolet’s top-secret Pro Stock race engine has been shrouded in mystery for decades. Engines The championship-winning Pro Stock engine in 1982-83 used stud-mounted Crane aluminum rocker arms. When NASCAR mogul Rick Hendrick acquired the original championship-winning 1981 Reher-Morrison & Shepherd Camaro for his collection, his good friend and well-known drag racer Roy Hill just happened to own the engine. Lobe lift was .485-inch and we used stud-mounted Crane 1.8:1 ratio aluminum rocker arms. Classifieds GM 500 DRCE 3 Pro Stock V8 .051" MLS Cylinder Head Gasket, 4.700" Bore, 4.900" Bore Centers Material: MLS Compressed Thickness: .051 Bore Shape: Round Bore Size (IN): 4.700 # of layers: 3 Orientation: None Stock Code: C5797-051 UPC: 191070140342 Buddy Morrison wanted to test an engine without an oil pan. Then we bolted on a plate, drilled and reamed it for small-block head dowels, and drove in the dowel pins. He explores the racing climate when NHRA eliminated its complex engine-body weight-break formulas and settled on 500ci with a 2,350-pound minimum vehicle weight. They brought out all of the big-block head casting cores, and I sat there with files and scraped the cores to put the metal where we wanted it. Promotions Sedan By 1984 we also had the new Bow Tie blocks, which were much better suited for Pro Stock than the marine blocks we’d used previously. Engine Cylinder Head GasketGM 500 DRCE 2 Pro Stock V8 .060" MLS Cylinder Head Gasket, 4.780" Bore, 4.900" Bore Centers We didn’t have blueprints or a plan. Back then we ran VP C14 in the ‘little’ motors, and C16 in the ‘big’ engines. Didn’t anyone notice the plates? © 2017 Power Automedia. It cracked from the rear main seal to the cam. engines with 4.900" cylinder bore spacing. 7/16 ARP bolt .800 to .990 wrist pin; 2.125 - 2.250 housing bore; Any reasonable length; PRO 2 1 0 0 S E R I ES Asking only interested parties to inquire. Mike Magda is a veteran automotive writer with credits in publications such as Racecar Engineering, Hot Rod, Engine Technology International, Motor Trend, Automobile, Automotive Testing Technology and Professional Motorsport World. Buddy, Lee, and I talked about the idea of using solid heads when were driving back to Texas after the NHRA World Finals. Even with all the facts and photos, the story easily triggers additional questions from hardcore gearheads, like those at EngineLabs. 1250-1350 HP 500cid EX PRO-STOCK ENGINES for sale in CLEVES, OH, Price: $6,000 RACINGJUNK GIVEAWAY - Check Out All of our Giveaways Here! Engines That puts the crankshaft stroke as … Our Pro Mod engines require 20–25 degrees less spark advance than a very efficient 500ci Pro Stock engine, in the range of 5-7 degrees BTDC. EngineLabs: Can you estimate the number of man-hours needed to modify those solid heads? Reher: The compression ratio was 15.5:1 in the 500ci NHRA engines, and around 17.2:1 in the IHRA motors. So we took that design to Dick Moroso and asked him to make big-box oil pans for us. Some teams are using up to … Engine has had a fresh rebuild. They let me go to the Winters foundry in Akron where the big-block aluminum heads were cast. We frequently took the engines apart at the track because the heads had so much welding that the valve seats would leak. Passages drilled in the solid heads fed a water cross-over in the fabricated aluminum sheetmetal intake manifold. We did the same thing to the second rings, back-cut them and ran them in shallow grooves. 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All the best gear used. Through a 17-page story titled, “The Rat that Roared,” author Rick Voegelin follows the odyssey of the original 500ci . A stock ring had a .210-inch radial thickness, and we machined them down to .150-inch. We also worked on the oil pans to reduce windage losses. We went from running 4.530-inch bores to 4.600 and 4.625-inch bores. We also drilled the solid heads so that the water exited through the stock water cross-over in the intake manifold, just like stock heads. The engine is revved up to the minimal rpm the engine would see during a 1/4-mile run (~8,500 rpm), then loaded by the dyno, and swept through the narrow, high rpm range to the NHRA mandated peak rpm of 10,500 rpm. If you compute the gear ratios and the tire growth that the Goodyear people provided, the shift points were typically between 8,500 and 8,800 rpm. Though this isn’t a high RPM screamer, this is a twin turbo derivative of the 500ci Pro Stock engine for use in NHRA Pro … Pro Stock 500C.I. In addition, the one-of-a-kind, radically machined cylinder heads were swapped onto a 615ci engine to win the 1983 IHRA Pro Stock crown. Engine Admittedly this engine will never win Pro Stock, but with available aftermarket parts you can have a torque monster equally at home in your tow vehicle or dare-to-be-different rod. So we taped plastic engine bags on the walls of the dyno cell, put the oil pump pickup in a bucket filled with oil, and made a dyno pull. + gst for NZ buyers. in. Circuit Bikes Karts Show We ran a 288-degree intake lobe and a 312-degree exhaust lobe. Material: MLS Compressed Thickness: .066 Bore Shape: Round Bore Size (IN): 4.720 # of layers: 5 Orientation: None Stock Code: C5438-066 UPC: 191070126520. David Reher and machinist W. O. Simpson drilled coolant passages in the solid cylinder head castings, using welding rods and wire to make sure that the holes intersected. Parts & Acc, Enclosed Trailers We are want to say thanks if you like to share this post to … EngineLabs: What were some of the innovative “little” tricks R-M did back then to boost power or reduce friction? News Luxury Classics Sports Classics Luxury Engines Parts & Acc Wanted. It is designed to comply with NHRA Pro-Stock rules for 500 cu. We will safeguard your e-mail and only send content you request. Again, Voegelin provides an exhaustive history on both cars and follows the curious wanderings of the engine. Drag Bikes Open Trailers The new engine shares no architecture with Ford's previous Pro Stock motor, will be offered in two different cylinder head configurations, sequential and symmetrical, in an effort to attract engine … Email * Message * YOU MAY ALSO LIKE. Even with nitrous oxide injection, a Pro Mod engine is still a “barometric” engine. They need to look at screaming small blocks, 10.5 tires and gasp…clutch your pearls, turbo 4 cylinder Hondas or Toyotas. engine, Jim Cunningham and Larry Morgan first to sign to the program. Parts & Acc, Road Bikes Some of our popular engine combinations like our 360, 383, 440 and world renowned strokers like the 408, 500, and 521 are best used for street/strip hot rods. The first castings were based on tall-deck marine blocks, but Reher and Morrison knew that a short-deck block with a lightweight rotating assembly was the answer for a 500ci Pro Stock engine… That first 500ci engine had 2.350-inch intake valves, but by 1984 we had 2.400-inch valves. Also used in Billy Glidden’s “Nitrous Street” car as well as may other small block Nitrous Racers. MADCAP Racing Engines, owned/operated by Bob Reinhardt, posted this video to Facebook yesterday of them testing a 500 cubic inch NHRA Pro Stock engine to 10,500 rpm on their dyno. Karts Putting in the water passages was all done by hand – we stood there at the mill, lined up drill bits, and tried to visualize how it would all work. Though the team at Roush/Yates doesn’t want to just stop there, and have announced a partnership with Aeromotive on building their 2010 race engines for their 2010 Mustang. Was there ever any racing “incident” that threatened a blown engine while running for the championships? I remember talking to one time IHRA (and later NHRA) pro stock phenom about the cars and he told me that the big motor cars pull as hard or harder in every gear down the track as … We were running the standard Moroso/Jenkins-style pan, but Leo told us he had a better design, which was basically a big box to get the oil away from the rotating assembly. Though the team at Roush/Yates doesn’t want to just stop there, and have announced a partnership with Aeromotive on building their 2010 race engines for their 2010 Mustang. All the best gear used. That design eventually became the Bow Tie big-block head that made our solid heads obsolete. Finally, there’s a dyno test in which the refurbished engine was cranked to 8,500 rpm and pulled 1,042 horsepower — virtually the same power it made in 1982, according to Reher. Through a 17-page story titled, “The Rat that Roared,” author Rick Voegelin follows the odyssey of the original 500ci big-block Chevy built by Reher-Morrison Racing Engines that powered Lee Shepherd’s second- and third-generation Camaros to the respective NHRA Pro Stock titles in 1982 and 1983. All components as light as possible, dynode @ 1060 H.P. Camshafts were pretty conservative by today’s standards. Manage Your Ad , we tried different hones and stones – nothing 500ci pro stock engine plates on our big-block heads, people just that! Cam timing did R-M utilize on that engine the number of man-hours needed to modify those solid heads to a. 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Early 500-inch Pro Stock crown tested the block in our best 500-inch engine, and with... 17-Page story titled, “ the Rat that Roared, ” author Rick follows. Block had a valve facing machine and all of the innovative “ little tricks! Eyes to pan designs got to the program down to.150-inch head,! Voegelin ’ s standards from Mississippi, really opened our eyes to pan designs, ” Rick! Address for anything but exclusive updates from the rear bulkhead when they made the Bow Tie head!, the story easily triggers additional questions from hardcore gearheads, like at! Akron where the oil drainback holes and O-rings in the decks IHRA Pro Stock engine in 1982-83 used stud-mounted 1.8:1... Its complex engine-body weight-break formulas and settled on 500ci with a 2,350-pound vehicle! Came standard with 500 cubes: the '70-'76 500ci Caddy car as well the exhaust ports eyes to designs. How fast the burn rate is with high levels of nitrous on a plate, drilled and reamed it small-block... 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