Chevrolet Performance 350 base long block engine assemblies start with a 4-bolt main bearing block, aluminum pistons, and a hydraulic camshaft. We started testing with stock iron manifolds and the ZZ4 intake. Camshaft lift is .450 intake / .460 exhaust. . These rockers come with pinch nuts, which tend to gall the rocker studs, so we used a set of ARP poly locks that are deeper to accommodate these rockers. See More Specifications, Summit Racing Equipment SpeedCard Find 1997 CHEVROLET 5.7L/350 Crate Engines Hydraulic roller, OE roller Cam Style and get Free Shipping on Orders Over $99 at Summit Racing! This is the main reason why we chose to run the high-zinc oil from AMSOIL, to ensure that the cam (once it was properly broken in) continues to work without undue wear. . The cast iron cylinder heads are designed to be extremely durable while still providing good airflow through the engine. But enough conjecture, we'll find the proof on the dyno so we trundled this small-block out to the Westech Performance Group where Steve Brule and his crew bolted our Great Crate up on the pump in short order had it fired and running. 0000006204 00000 n But this is STREET RODDER, which means we can't leave it stock. The easiest way to do this is by carefully tightening the adjustment nut on the rocker while twisting the pushrod between your fingers. We did not degree the cam, but it will be within a degree or so of its intended position. Then they're topped with cast iron cylinder heads designed to be extremely durable, while still providing good airflow through the engine. Instead, we substituted these ARP poly locks. This is nowhere near an optimal piston design. 6. Please note: This package does not include a carburetor, Chevrolet Performance recommends the Holley 670-cfm carburetor for use with the 350/290 Deluxe. You're invited to go behind the scenes with The BLOCK as they cover the industrys elite races and events, like SEMA, and learn more about the latest releases and product info surrounding Chevrolet vehicles, parts and racing. And, just like with the Windsor-Block, there's an incredibly robust array of available aftermarket upgrades for the 350. We bolted the heads on using a set of ARP head bolts and a three-sequence torque pattern starting at 40 lb-ft, increasing it to 50 then 65 lb-ft. We also used ARP's Ultra-Torque lubricant on the head bolt washer on both sides. It was time for a major change. The crate engine requires the starter, induction. startxref Everything from OE brake upgrades to complete bolt in rear end packages! Of course, the RPM heads also improve the airflow by a significant amount. Edelbrock rates the 185cc intake port on the RPM head at 250 cfm at 0.500 valve lift while a typical 76cc iron production head will do well to exceed 200 cfm at this same valve lift. We could decrease the installed height to increase the load, or we could install stiffer springs to achieve the same result with the original installed height, or we could try lighter, tool steel valvespring retainers. We estimated the piston chamber in the original story at 10 cc but it really comes closer to around 13 cc along with a 0.024 deck, and an 0.041-inch-thick head gasket computes to 8.0:1. That's a 1.4:1 increase in the static compression ratio. So as you will see, because we saved the heads for lastthey will appear to be worth an amazing amount of power. Chevrolet Performance 350 base long block engine assemblies start with a 4-bolt main bearing block, aluminum pistons, and a hydraulic camshaft. Later we read the Edelbrock instruction sheet that comes with the heads and Edelbrock expressly mentions this as a possibility that should be checked when the heads are installed. Plus, our conservative motor still looks like a simple small-blockno blower, nitrous, or tunnel ramjust a simple small-block that really gets with the program. Just increasing the compression this much should be worth roughly 13 hp from the 334hp baseline. Free shipping for many products! Warranty valid when all required components are installed on the same vehicle and purchased on one invoice. With the valve covers off, we ran the pump for roughly five minutes before oil reached all 16 rocker arms. Interestingly, the torque picked up below 4,200 rpm and was clearly worth the effort. With the intake lobe adjusted, rotate the engine until the intake valve is past full lift and is halfway closed. Making 400 hp might have been a challenge, but solid 390-plus horsepower would certainly be achievable. 9. 0000015655 00000 n Harmonic balancer used will need to be checked for exact TDC (top dead center) location and timing pointer added to correct location. When you feel the pushrod tighten up, you have achieved zero lash. Its assembled with all-new, premium components, including a brand-new block with four-bolt main capsa strength-enhancing feature most original and core 350 engines dont have. From mild to wild ATK VC01 Chevy 350 Base Engine 275HP Our Price (USD): $2,037.00 Classic 350 with great street manners, and vacuum for all your power accessories. Talk to the experts. The 350/290 Deluxe (300 hp) adds an aluminum intake manifold and a chrome dress-up kit. That just might be what we plan to do in a future story. The larger cfm really won't affect our power numbers and this was a known carburetor. 0000005119 00000 n I do a cam for the target 290HP engine. At the time, the engine was nearly totally stock with just headers and a Holley carb as the two major changes. The clich holds there are only two things that you can count on, death and taxes. Moreover, these heads are not only large chambered (76 cc with them the real SCR is more like 7.9 than the advertised 8.5) but they are also the slow burn SMOG heads used from the early 1970's to mid 1980's. I just wouldn't buy a flat tappet cam crate motor. ','@'); } document.getElementById('e55bc0082bc87083a4bb').appendChild(document.createTextNode(e55bc0082bc87083a4bb())); Orders may take longer than usual to process due to manufacturers having issues receiving and shipping parts. $250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine . Its a decent engine, but I would not buy one again. 0000001468 00000 n Rebates may be submitted over two invoices within 120 days of each other. We like to go over each poly lock to make sure we didn't miss one. All GM Performance engines include a 24 Month 50,000 mile warranty. The big parts it needs to make noise include a balancer and flexplate, intake, carburetor, distributor, and a water pump. Maximum GM Recommended RPM: 5100 Chevrolet Performance Parts believes that everyone should be able to afford a high quality GM V-8 without going broke. We anticipated that we might see this because we were still using the stock valvesprings, which included those ugly exhaust rotators. The greatest average torque gain was the head swapno surprise there. 0000009313 00000 n If you're considering rebuilding I've seen a few sets of camel humps on craigslist between $75 & $200. Chevy Small Block Crate & Long Block Engines, Chevy Small Block Trans & Engine Packages, License Plate and License Plate Accessories, Computer Chip/Programmer/Performance Module, Crate Engines, Bare Blocks and Long Blocks, Exhaust/Exhaust Components/Heat Protection, LTx Performance (Gen V) Performance Parts. base long block crate engines are their most popular choicebecause no one else can deliver as much performance for this kind of value. 0000080216 00000 n Stop there and adjust the exhaust rocker. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. The 350/290 is the most popular Chevrolet Performance Parts crate engine because no one can deliver such performance for this kind of value. GM Performance Parts believes that everyone should be able to afford a high quality GM V-8 without going broke. The 350/290 is an answer to those car crafters who demand maximum return on their money. 0000004383 00000 n dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive. Finally, if the valvesprings had held on for another 300 rpm, the average horsepower gain on the rocker swap would have been really strong. Drop some performance into your Street Rod, Muscle Car or Truck with these genuine GM Performance engines! Actually, there are three. If so, this is the crate engine for you. This is a custom order part. 0000078795 00000 n Chevrolet provides customers with fuel-efficient vehicles that feature engaging performance, design that makes the heart beat, passive and active safety features and easy-to-use technology, all at a value. In a giant intake manifold test we performed in Car Craft in the Sept. '13 issue, we found that rpm manifold was worth 14 lb-ft of torque over that exact same factory-based intake using a 406ci small-block making over 500 lb-ft of torque. Look no further! We'll go into that in the main part of the story. 0000006880 00000 n To bump the compression, we used a set of Fel-Pro steel shim head gaskets (PN 1094) that are only 0.015-inch thick, compared to composition gaskets that are 0.039 thick. But you will see why we like this intake in later tests when we really start moving some air through this engine. This occurs because the higher ratio moves the pushrod cup closer to the rocker stud fulcrum. Find everything from vital data about your engines capabilities to how to install it into your build. -ft. of torque at 3750 rpm. Harmonic Balancer Bolt & Washer. As expected, the dyno chart reveals that the head swap made a significant gain in power throughout the entire curve. Then we added the Edelbrock Performer RPM intake and the power jumped only slightly. This package includes all the same parts and features as our other Pace Pac 290HP packages but we've changed out the intake with a retro looking Edelbrock Performer EPS that we have also drilled and baffled for a rear . This dish is a full round dish so there's very little quench, which tends to diminish combustion efficiency slightly, but short of changing pistons (which defeats the main purpose of a crate engine) this is what we'll work with. High-flow aluminum heads are the keys to the ZZ4's robust 355 hp and 405 lb.-ft. of torque. Since Edelbrock's flow data reports that these heads will flow decently right up to 0.600, we thought that a set of 1.6:1 rocker arms would help the cause. Reviews That direction firmly defined our search pattern along with an eye toward not depleting our meager horsepower war chest. Combine this with stainless 2.02/1.60-inch valves and a 185cc intake port and you have a recipe for power. The Deluxe adds an aluminum intake manifold and chrome dress-up kit to create one of the. 9. With those kinds of numbers, it's the perfect replacement engine for the millions of GM vehicles that shipped with a small-block. The first thing we did besides paint the engine orange is stick it on the dyno and add headers, an Edelbrock Performer RPM intake, and a COMP Cams flat-tappet hydraulic cam that combined to deliver 44 hp for a 334hp peak. ): 1.940 intake / 1.500 exhaust, Rocker Arms (P/N 10089648): Stamped steel, Water Pump (P/N 88894341): Cast iron, long-style. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. One reason the power improved with the head swap was because of this bump in compression. The 350/290 is an answer to those car crafters who demand maximum return on their money. 4.5 out of 5 stars The 350/290 HP base engine assembly does not include an oil filter adapter or oil filter element. We checked pushrod length to make sure it didn't change with the higher ratio rockers and then installed these Magnum roller-tipped rockers. Overall, our little small-block has delivered on every improvement we've made. The plan for this engine has always been to build an affordable small-block that will deliver excellent street manners while still delivering good power. 0000079214 00000 n the oil dipstick for the 350 290 hp engine . Depress the bottom plunger and mix the paint and apply some really durable catalyzed paint. You are currently viewing Chevrolet.com (United States). If you look at the accompanying second graph that illustrates the power difference from the cam swap, take notice of how the COMP cam added a full 30 lb-ft of torque way down at 2,800 rpm. It's assembled with all-new, premium components, including a brand-new block with four-bolt main capsa strength-enhancing feature most original and core 350 engines don't have. GM Performance Parts believes that everyone should be able to afford a high quality GM V-8 without going broke. This is the area where most street engines spend a majority of their time, so among all the improvements we've made this is where it all comes together. Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. An affordable icon The 350/290 Base is an economy-minded alternative to rebuilding Gen 0-type 265-400-cubic-inch Small-Block engines. 0000006175 00000 n Camaro. 0000002406 00000 n Pace Performance is proud to offer performance engines for your GM, Mopar, and Ford street machines! All GM Performance engines include a 24 Month 50,000 mile warranty. 0000120386 00000 n Connect with us via email and social media today. Description: Massive torque in an affordable Big-Block is what you get with the 502 HO crate engine. 1. ): 222 intake / 222 exhaust, Valve Size (in. Block is drilled for drivers and/or passenger side oil dipsticks, plugs are not included to plug unused dipstick tube hole. Check out the rest of our website for more information. Stamped steel Chrome valve covers Torque. Visit www.chevroletperformance.com/emissions for more details. But long duration cams also move the torque peak to higher engine speeds that this engine package isn't really designed to accommodate. Engine: 5.7L V-8 Horsepower: 385HP Torque 405FT-LBS Purchase: $5,623+ Honda Civic Type R Crate Motor Do the same for the intake valve lined up with the intake port. But the second greatest torque gain was the headers with an impressive 25.9 lb-ft. That just shows you how important the exhaust system is to engine performance. Cam fans may have already noticed that we didn't really make that much of a changethe 290hp crate engine's intake duration is only 2 degrees less222 degrees at 0.050 versus 224 degrees for the XE cam. 2. You can also turn it over with the starter motor if you prefer. The full dish is roughly 13 cc and could really use a flat quench area to promote combustion efficiency. $250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance CrateEngine, $250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine. The 350 HO small block crate engine has powered countless project cars since its '67 Camaro debut. After resetting the lifter preload with the COMP 1.52:1 roller-tipped rocker arms, we buttoned the engine back up and ran it up to see how much the power improved. 0000004498 00000 n We thought the peak horsepower would be closer to 6,000 rpm, but as it is the spread between peak torque at 4,300 and peak horsepower at 5,700 is a decent 1,400 rpm. Parts only when consumer repaired or installed in non-highway application. Spent some time reading up on the Vortec issues more and finally understand; here is a pic of a vortec block - note large coolant passage between cylinders 2 and 4 at bottom area: Pace Performance (a GM dealer) used to sell the 260 and 290hp 350 crate heads as "take-offs" Meaning they used the brand new shortblock and put a better head on it. The only giveaways would be the dipstick on the wrong side and the lack of a mechanical fuelpump. xref But for the street set, simple crate engines have become the quickest and easiest path to movin' down the highway. 0000005822 00000 n Current setup- trans is a performance automatic TH350 rated to 550hp, 8.5" rear with 4.10's I appreciate all the feedback possible. The chrome dress-up parts include the valve covers (with push-in . This way, you don't get lost trying to remember the firing order. Perimeter bolt style Valve Covers. Valves: .194 Intake/ 1.50 Exhaust Balance: Internal CHEVROLET PERFORMANCE TRANSMISSION (PART-ONLY), Designed, engineered, and tested to stringent Chevrolet specifications, Installation Kit included for ease of installation, Packaged solution with conveniently matched engine, transmission, torque converter, and transmission controller to fit your customized needs, Simplified part-sourcing process, eliminating the need to independently source compatible components, Factory tuned and calibrated to fit your unique application, Eligible for $500, $750, or $1,000 mail-inrebate See Rebate website for details. 350 HO The Chevy 350 HO (333 hp) engine provides significant power and torque in a compact and affordable package. Power: 260 hp at 4,300 rpm, 350 lbs/ft of torque at 3,600 rpm Displacement: 350 cid, 5.7L Bore x Stroke: 4.00-inch x 3.48-inch Compression Ratio: 8.5:1 Block: Cast Iron, 2 piece rear seal, 4-bolt main caps Camshaft: Hydraulic Flat Tappet Cam Lift: .383-inch Intake / .401-inch Exhaust Cam Duration at .050-inch: 194 degree Intake / 202 degree Exhaust 0000003053 00000 n Against the ZZ4 intake, the RPM manifold is very close in terms of power and the ZZ4 is less expensive. 0000003584 00000 n 0000003328 00000 n 0000002198 00000 n We then used a pressure luber adapter driven by a 1/2-inch drill motor. Base Long Block Crate Engines, Engine Assembly, Crate Engine, Chevy 350 Base, 290 HP, Each Chevy claims this is an 8.0:1 compression engine and our calculation was pretty close at 8.1:1. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Pistons: Cast Aluminum In fact, the real reason our peak horsepower gains didn't improve as much as the torque is attributable to the limitations imposed by the stock heads. As you can see that was worth a bunch of power. The curve after peak horsepower also looked stable, which allows you to spin the engine up to perhaps 6,200 for a better shift recovery rpm. 0000006233 00000 n ): .450 intake /.460 exhaust, Camshaft Duration (@.050 in. It's our bad for not reading the instructions! This is a comparison of the position of the pushrod cup in a 1.5:1 roller rocker (left) compared to a 1.6:1 roller rocker (right). For want of a better term, let's call this the synergistic effect. The 350/290 is an answer to those car crafters who demand maximum return on their money. This is how you increase the ratio. With the engine on the dyno and the stock cam properly broken in, we had problems with our previously owned 650-cfm Holley so we decided to use a larger 750-cfm Holley because that's all we had. There are some interesting things going on here if you study the numbers. For more information, check out http://www.chevroletperformance.com/.------Head over to Chevrolet Performance for all the latest crate engines, Connect \u0026 Cruise Powertrain Systems, E-ROD crate engines, vehicle-specific parts and more: http://www.chevroletperformance.comSUBSCRIBE: https://www.youtube.com/channel/UCiUhConnect with Chevrolet PerformanceFacebook: https://www.facebook.com/ChevroletPerInstagram: https://www.instagram.com/chevroletpeSnapchat: ChevroletperfTwitter: https://twitter.com/ChevroletPerfThe BLOCK is full of Chevrolet Performance.