1969 chevelle 307 engine specs

The '69 Chevy Service Manual specs list the 307 at 2 deg BTDC at idle (with vacuum adv disconnected) and max centrifugal advance of only 28 deg BTDC at 4300 rpm. 4 - With Air Injection reactor The torque rating is 350 lb-ft. at 4,000 rpm. Jeff Latimer, a savvy engine builder and racer who used to manage JGM Performance Engineering in Valencia, California, came to us with an intriguing engine build project no one had ever tackled before. How much would it cost to build the 400 hp version and would you be interested in building one for me? The regular SS 396 accessory package included the same 325horsepower engines as the 1968 SS 396 Sports Coupe, but could be upgraded to the 350horsepower model and, later, the 375horsepower version. Like Ford with the 289 turned 302, Chevy stroked the 283 to 307ci. 4-Door Sedan; . All I can find have the VA on them. on this website. These fabulous heads could have been used out of the box, however, Jeff wanted maximize the 307s potential with a good port job. Jeff knew it was going to take higher rpms to achieve 500. Hauling around an Impala? //Specify random URLs to display inside iframe solenoid disconnected. It could be built to make a lot of power and, because cores are so plentiful and cheap, you could get into one for not much money. And because this engine will still have more exhaust cam than it needs, Jeff went with 1.6 ratio Trick Flow rockers on intake and 1.5 on the exhaust. The 1969 Chevrolet Chevelle and Malibu series included this . The engine uses a bore and stroke of 3.875 inches by 3.25 inches. 1970 Chevrolet Chevelle SS LS5. The interior colors for the 300 DeLuxe lines were limited to black, blue or medium green for cloth-and-vinyl interiors, or an all-vinyl interior in black. //This credit MUST stay intact for use The 1968 to 1971 engines have a maximum brake horsepower of 200 at 5,800 revolutions per minute and a torque of 300 foot-pounds at 4,200 rpm. JavaScript is disabled. The Chevy 307 V-8 engine has a two-barrel carburetor. T Numbers matching 307 V8. The engine delivers its power through to the wheels by means of a 3 speed manual gearbox. David Vizard could have told you exactly which cam you needed for this engine, instead of trying 2 or 3 different cams. $58,900. Update: I wiped off the tab and found that the highest reading is 8 degrees, so I set it there and tried it. Plenty of low-end torque. Its logo consisted of an arrow, similar to that . 2) Horsepower/Torque Curve He managed a whopping 70 horsepower increase. 1970 Chevrolet Chevelle Series 1969 Baldwin-Motion SS427 Phase III Chevelle. 10- New .019, used .016 Turn adjusting screw in Clockwise until engine misfires, then turn screw out 1/2 turn, 11- With integral intake He wanted double that 200 factory horsepower number. Muscle car enthusiasts may have been upset to see the additional disappearance of the SS 396 Sport Coupe as its own line, but the SS 396 became an accessory package that could be added on to any car in the Malibu series. In the C10 truck with the same specifications, including 10.25:1 compression and the requirement to burn . Stock 200 hp pulls 80mph in first with 2:78 gears. Engine Type Cubic Inches. It works by regulating the ratio of air and fuel, and controlling the engine's speed. Lime Green Metallic looks better on the 1969 Chevelle than almost anything else. In any case, the engine runs much better if I crank it up a bit. Chevrolet Yenko Chevelle COPO 427 specs, 0-60, performance data and Air Injection reactor system, Ignition Timing var iframeobj=document.getElementById? 410 @ 3200. Power. Unauthorised republishing prohibited. A nice vintage hardtop with a lot going for it, you can enjoy this dialed-in V8 Chevelle for just pennies on the dollar compared to a big block SS. 1965-69 Chevelle & Monte Carlo Tune-up Specifications The marine version of this engine produced between 235 and 245 horsepower and even used the same aluminum valve covers that were used in Corvettes and Camaro Z-28s.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[580,400],'enginefacts_com-medrectangle-3','ezslot_2',115,'0','0'])};__ez_fad_position('div-gpt-ad-enginefacts_com-medrectangle-3-0'); Engine Facts 2023. Engine: 307 V8: Transmission: 3 Speed Automatic: Color: Frost Green: Interior: Green: Mileage: 31,748 (Unknown) Chassis; Front Wheel Specification: 15" Rear Wheel Specification: 15" Front Tire Specification: 215/70R15: Rear Tire Specification: 215/70R15: Front Brakes Specification: Power Drum: . The Nomad wagon also remained part of the 300 DeLuxe line, a stripped down model offering the lowest price of the Chevelle wagons at $2,783. 1969 Chevelle SS 396 incredible and Exciting Muscle Car Chevrolet never did a high-performance 307 like it did with the 283. His efforts proved out as predicted at twice the factory numbers. 1969 Chevrolet Yenko Chevelle COPO 427 specs, 0-60, performance data, top speed, engine specifications, pictures. The Saginaw four-speed and the Rock Crusher manual transmissions were available, as was a Turbo 400 automatic. Bench Racing Performance Engine Body Shop Chevelle Tech. Very nice build. Additionally, as the muscle car wars were really raging at this point, there was a hankering for more power than even the highest powered factory model could deliver. Because this is not a budget build, but more an experiment, not many will be interested in trying this. Known as the Chevelle COPO 427, this run used the L 72 engine from the larger Chevy lines, a 427 cubic inch V-8. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Eager to find a way to circumvent GMs power limits, Chevys performance-products manager used the Central Office Production Order (COPO), usually reserved for special fleet orders, to order 323 specially built Chevelles. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. With a believed-original engine and a survivor presentation, this is the one to one if you love the original Bowtie design. or Mark). Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft.-lbs. 6.0 sec. Its out of my 1971 k10. Whats more, the 327s 3.250 inch stroke made the 307 a clear winner. Jeffs first trip to the dyno netted 401 horsepower at 6,400 rpm and 372 lbs.-ft. of torque at 4,600 rpm, which doubled factory 200 horsepower ratings. . 1967 ] | [ After 1973 the 307 was chopped from the GM line engine lineup. 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I would of never done a full port on the Victor Jr. With the small bore, that really backfired on you and I never use an HEI unless the msd box is in between it and controls the coil. Jeff started off with a 750 cfm Holley HP carburetor with vacuum secondaries and a GM HEI distributor modified with MSD ignition components. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Zero to Sixty. The 307 has the bore advantage over the more popular 305/5.0L engine3.875 inches over the 305's smaller 3.736. Which one is that? A better small engine would be a 3-inch stroke crankshaft in a 4-inch bore block with 5.98-inch long rods. 396ci/350hp. Building any small block with less than a 4-inch bore is senseless. 2023 Power Automedia. This type of carburetor performs well in low-performance vehicles. 1971 Chevelle Malibu 307 2001 Triumph T509 2000 Audi B5 1.6. There were twobig changes for Chevrolets Chevelle in 1969. 14.2 sec @ 100.0 mph. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Chevrolet Chevelle 300 Deluxe Coupe 307 V-8 Turbo-Fire Powerglide in 1969 the model with 2-door notchback coupe body and V-8 5025 cm3 / 306.6 cui, 149 kW / 203 PS / 200 hp (SAE gross) offered since September 1968 for North America U.S.. Chevrolet produced the 307 from 1968-73, which means there are a lot of cores out there waiting to be rescued and built. We ran two different Holley Carbs to check out the differences. Miraculously, it remains a standard Malibu Chevelle, not an SS clone, but that does nothing to dilute the handsome good looks of any 1969 Chevelle hardtop. (BTDC In my opinion, the best combination was when we made 471/409 horsepower and torque. The engine delivers its power through to the wheels by means of a 3 speed manual . Very informative. The 311ci engine was already producing more than 1.5 HP per cubic inch. ft/32.5 kgm) at 2400 rpm. TDC- Top dead center. My 69 Chevy C10 has the original 307, 2 barrel with an HEI system and Ive always felt like it has a lot more tiger in its tank than Im giving it credit for!! She has written numerous articles for various online publications. lower speed indicates idle 10- New .019, used .016 Turn adjusting screw in Clockwise until engine misfires, then turn screw out 1/2 turn. This year, the 327ci engine was dropped from the lineup in favor of the 350ci engine. Please cant find anything on them. In comparison the '69 specs for the L65 350 2 bbl engine list 0 deg at idle and 36 deg centrifugal, for 36 deg total. Though exterior appearance did not change much from the 1968 Chevelle, the most drastic change in the Chevelle line for 1969 was in its series designations. 1969 ] | [ Good job guys,all these haters.I like odd combos.any body can buy and build 327s,350s.again great job. Quarter Mile. 14- Manual trans and Air Injection reactor system. Not being an SS doesn't mean the interior isn't a performance-oriented place to do business in comfort and style. 15.4 sec @ 92.0 mph. . The 307 is a large-journal 327 with 1/8 inch smaller bore. There was also a last minute cam change from 242/248 on 110 lobe centers to a Comp Cams solid roller cam254/260 on a 110 lobe centers. All rights reserved. Reply. That's only 30 deg total advance (initial plus mech) which isn't much for a small block Chevy. gasoline (petrol) engine with displacement: 5025 cm3 / 306.6 cui, advertised power: 149 kW / 200 hp / 203 PS ( SAE gross ), torque: 407 Nm / 300 lb-ft, more data: 1969 Chevrolet Chevelle Malibu Sport Coupe 307 V-8 Turbo-Fire Powerglide (aut. 7.6 sec. It doesn't say, but I assume this number should be with disconnected vacuum. Chevrolet produced a limited number of COPO Chevelles, specially ordered from the factory by specific dealers and a few select customers. Good for the street. if (ie||dom){ Upon the next trip to the JGM Performance Engineering Dyno, the upgraded 311 came up a bit short at 486 horsepower at 7,200 rpm with a loss in torque to 390 lbs.-ft. peak. An 450 HP 454 V8 was available. 1969 Chevrolet Chevelles for Sale | Hemmings The engines available in base-model Chevelles still included the 230ci and 250ci six-cylinder engines (140 and 150 horsepower respectively), and the 307ci V8 that put 200 horsepower under the hood. That netted 471 horsepower at 6,500 rpm with torque coming in at 409 lbs.-ft. at 5,500 rpm. The secret is in the velocity and turbulence of the fuel/air mixture. 325 @ 4800. The big news for 1969 was the introduction of the 425 horsepower L72 427ci engine. I'd limit the vacuum advance to 15 deg max. This article is very instructive about what gets you where, most interesting. You can use 1.94 or 1.84 intake valves in a good set of heads WITH SMALL CHAMBERS. 1969 Chevelle Engine Horsepower & Torque Specifications. The Chevrolet Chevelle is a mid-sized automobile that was produced by Chevrolet in three generations for the 1964 through 1978 model years.Part of the General Motors (GM) A-body platform, the Chevelle was one of Chevrolet's most successful nameplates. My name is Bill Cannon and I own AwesomeEngines from Delaware. Never again would this much power be built into these cars. Chevrolet Chevelle - Wikipedia The 307ci engine was first produced in 1968. Please choose to download one of the following options for an improved browsing experience: Chrome (Download ), Microsoft Edge ( Download ) or Mozilla Firefox ( Download ). While engine at normal operating temperature and transmission in D" dwell should be at 30 and ignition should be 8 BTDC (Idle Speed 550 rpm). randomcontent[2]="http://chevellestuff.net/sidebar/random03.htm" 1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 .030 to 402)/M20/12BOLT/3:31'S . He had the intake manifold ported a bit more and added half a ratio to the rockers1.6 intake and 1.5 exhaust. The lengths of all models varied slightly from previous years and now had three different length categories: 4-door models were 200.9 inches, 2-door styles measured 196.9 inches wagons were 207.9 inches long. Use 3:08 gears, and everything is good. I would of filled the block to 1-1/2 from the deck and plate honed it for sure. The small journal crank was sweet but the Hp and torque you done were impressive. The hydraulic cam does not have clearance ramps so I set the lash at zero cold. We also added a complete MSD ignition system to keep everything lit at high revs.. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. If you want a cam for a bit more hp, go for a torquer and avoid anything that just moves things up the rev range. Your email address will not be published. Makes me want to build a 307 just to have someone ask What Are You Running for a engine??? Since the cam had lash it became slightly smaller. 15- Also Monte Carlo. var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1 The 327 cubic inch displacement top-end carbureted V8 motor has a bore and stroke of 4 inches by 3.25 inches. 307 V8, UPGRADED TH400 AUTO, PWR STEER/BRKS. To increase the piston dwell time, I have opted for a long 6.250 inch rod combined with custom pistons with a 1.125 inch compression height to get 10.75:1 compression, Jeff commented. However, the federal government's emissions regulations of 1972 saw the 307 de-rated to 115 horsepower. Jeff quips, I have seen aluminum rod engines with a heavier weight than that!. //Specify IFRAME display attributes Copyright 2023 Classic Cars for Sale - Streetside Classics - Sell My Classic Car. It worked great, snappy throttle, good acceleration, ran like a champ. Just think how many people were lured into racing at stoplights and getting embarrassed. If that setup caused ping I'd change the vac adv pot to a less sensitive one that started advancing at a higher vacuum level. I would of done it differently and I never use silicone on a rear main seal or the deck. 1970 Chevelle - Muscle Car Facts The compression ratio is 9-to-1. Some cars are very much cheaper to insure than others. Although Super Sport became an "option", the 396ci engine packages were virtually the same as they were in 1968. The engine has AC-R45S-type spark plugs with a 0.035 gap. The dashboard is all-stock with a factory gauge setup, giving you a full view of the engine's goings-on, and a newer retro-style digital AM/FM/AUX stereo head unit is fitted in the original radio's location with speakers throughout the interior. With the absence of the 300 series, the lowest priced Chevelle for 1969 was the 300 DeLuxe 2-door coupe, priced at $2,531. The engine was used in lower performance oriented family type cars and was equipped with a 2 . Your email address will not be published. The PRO L35 - The Base Engine, A 396 cubic inch (6.5 L) engine rated at 325 horsepower. The bottom end was balanced and fitted with super light bob weights at 1,550 grams. With those heads and a mild cam .420 lift it would make a great cruiser. Therefore, only the 300 DeLuxe and Malibu remained as designated series for the line. These cars were based on the Chevrolet Chevelle, but the line had its own logo and nameplate, and was neither marketed nor actively sold in the United States. You can just match up the heads and manifolds, but if you polish the runners, mixture turbulence is affected. var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1 All of these engines were available with the three-speed manual transmission as standard equipment, but the four-speed manual and three-speed automatic transmissions were an option. Summit Racing stocks a huge variety of piston ring compressors, StreetBurner Trick Flow dual-plane intake manifold, Summit Racing stocks a wide variety of terrific silicone gaskets. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. How cool is that?! Vehicles; . He added the two highest horsepower numbers were with the 830. What made those numbers even more impressive was the fact that after we had removed . Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Panel alignment and door gaps are quite good, and the light pinstripe that runs the length of the car gives it a sleek look that proves you don't need SS stripes to have a great-looking A-body. Chevrolet Malibu | HowStuffWorks Please ask for the full description. . The 1972 engine has a maximum brake horsepower of 130 at 4,000 rpm with a torque of 230 foot-pounds at 2,400 rpm. The standard Super Sport was no slacker either and much more common. Jeff went back to the dyno with fresh 5w30 Mobil1 synthetic, then warmed up the engine. The Fora platform includes forum software by XenForo. If you want to race, build a race car. The greater spring pressure and solid rollers would allow the engine to rev higher than before., Jeff admits he became greedy about power. 1966 Chevrolet Chevelle. Prev--- Chevrolet 1969 General Specs ---> Next |engine|chassis| Engine Engine: Carb: Bore and Stroke: Piston Dis place ment Cubic Inches: Com pres sion Ratio (Stan dard) . //For full source code, and Terms Of use, visit http://dynamicdrive.com Jeff opted for Trick Flow (#30310003) cylinder heads and intake, which were ported for a perfect match and improved flow. A TH400 3-speed automatic transmission was swapped in favor of the original Powerglide and it makes every drive a pleasure, and with new components like a fresh shocks and newer gas tank underneath, you can cruise without a care. He substituted the hydraulic roller tappets with mechanical solid rollers from Comp Cams with the hydraulic roller cam he already had. 31,740 Miles. It idles smoothly, doesn't bog when I floor it, and the throttle response is way better. The compression rating is 140 pounds per square inch. I generally set total around 38 degrees around 2500 rpm. In Jeffs mind, the 307 was a sleeper. Right off the assembly line, the 307 delivered 200 horsepower and 300 lbs.-ft. of torque. Id like to keep original engine in it, but would love around 375 hp, I dont have anyone local who can build it, any ideas, What bearing spacers where used ugg trying to build this motor. Thanks guys! 1969 Chevrolet Chevelle Price $89,995 1969 Chevrolet Chevelle Price Auction Chevrolet Chevelle s by Year 1973 Chevrolet Chevelle. please note the exact page by its address That would give you 36 total if your dist is still in spec. Very pleased with the results, Jeff told us, Weve made more than a hundred horsepower from the 307/311 without ever pulling the heads., Throughout the process, we performed several timing test pulls. Chevy rated the horsepower for the COPO Chevelles at 425. Not bad for the little 307 Chevy., Jeff went on to say with the smaller 750 HP with vacuum secondaries, it would use less gas than a 350. Vinyl tops were made available for all coupe and sedan models. Body styles included coupes, sedans, convertibles, and station wagons.The "Super Sport" versions were produced through the 1973 model year and . Consider the cost of insuring a car before you buy, if the lower rate insurance is your highest priority. ft/32.5 kgm) at 2400 rpm. The PRO L34 - A 396 cubic inch (6.5 L) 350 horsepower engine. The performance on a Chevelle COPO was truly amazing. 1969 Chevrolet (USA) Chevelle Malibu Hardtop Coupe Series 2 emission system (A.I.R). Not only did the Malibu contain its usual sport sedan, sport coupe, convertible and 4-door sedan, it also represented the two Concours station wagon lines. V8. The bumpers are so shiny they look to have been re-chromed, the stainless trim polished, and even the original grille remains in outstanding condition thanks to a lifetime of easy living. It lifts the design beyond mere transportation and gives it an upscale look that complements the handsome trim and tidy proportions. The compression ratio is 11:1. Zero to Sixty. The number I recall from last time is 36 total, but the scale on the pointer is one of those stupid "0" to "A" so I haven't been able to check. One was a Holley HP 750cfm with vacuum secondaries while the other was an 830 cfm HP.. My CNC race preps a block in 30 minutes and that is bored, and decked in perfect 45 degree bank angle as well as bored on that degree perfectly. View car. The paint is likely original, or at least a very old repaint, so it has a few signs of age, but you'll still be proud to show up in this hardtop at the local cruise night and the color hides imperfections quite well. The base 396ci engine was available with 325 horsepower, or the optional L34 396ci engine got you 350 horsepower (both had Rochester carburetors, 10.25:1 compression and two-bolt-main blocks). Required fields are marked *. With that power your block is suspectable to splitting. An example of data being processed may be a unique identifier stored in a cookie. It also raised the idle to the point where I couldn't back the screw out far enough to get it right. The base 396ci engine was available with 325 horsepower, or the optional L34 396ci engine got you 350 horsepower (both had Rochester carburetors, 10.25:1 compression and two-bolt-main blocks). I would have just put the black mamba lifter in with a cam not like yours but for sure used a 106 lobe separation. In short: It seems like the timing should be quite a bit higher than what the manual says. 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