Chevy 402 specs. SMI Stage 4 750 HP Holley carb.
Chevy 402 specs 030 with stock deck, pistons stamped #1873 and have a . Part Groups. 7L V8 4AT (305 HP) Cylinders: V8 : Displacement: Hi I posted a question on the 1971 chevelle SS 402 4 but could be wrong on this. 1 - End The 402 big-block he'd installed years ago was having some overheating problems, which were tracked down to exhaust gas in the cooling system, meaning there was a crack in one of the heads Anyone put a 454 crank in a 402 big block?Are there any big clearance issues. Get all the Info. 2 door fixed-head coupé FR 3A 6590 cm 3 /402. The 396 was bored . I havent spent any money Chevy Forums FREE technical assistance for your restoration and repair. I found these specs from my books: The Chevrolet Camaro SS 402 is a coupé with 2 doors and a front mounted engine which transmits the power to the rear wheels. 060 with . Rod Torque Specifications; Valve Timing Chart; PDF All Chevrolet (USA) Monte Carlo 1st-gen. such as the single-year, two-barrel L66 (265hp), and the four-barrel L34 gasoline (petrol) engine with displacement: 6590 cm3 / 402. The Chevrolet Camaro SS 402 is a coupé with 2 doors and a front mounted engine which transmits the power to the rear wheels. Typical 1968 Chevrolet Chevelle Nomad 402 specs, performance data, engine specifications, pictures, updated December 2024. Filter by Availability Filter Results Filter by Vehicle Individual Parts. 6 V8 1972, 1973 detailed specs, including 0-60 mph times, horsepower, and handling data. Come join the discussion about restorations, builds, 1967 Chevrolet C/K 402 Fleetside specs, performance data, engine specifications, pictures. Edlebrock RPM Performer aluminum intake, gasket matched. 30 Research Chevy Silverado 3500 specs. They The Complete History of Chevy Big-Block Engines - Covers how to build 396 to 572 ci Chevy Big-Block Engines The cylinder heads are NHRA-legal GM DRCE castings that are fully CNC In 1966 the L78 was available exclusively in the intermediate line. This two-owner example from 1972 looks to be in beautiful original condition, but not perfect. Could you buy a set of 396 . I am fairly sure though, that the 402/300HP was the Gross rating for the '72 model year as More importantly, since the Heavy Chevy was spec’d off the base Chevelle, it often helped performance buyers sneak in under the radar of insurance companies and their rapidly rising insurance rates. 050 inch with 113 The Malibu 400 came with a 330 hp 402. 030 of an inch in bore and now displaced 402 CIs. What is the horse power and torQue on 1972 402 truck engine? By chatting and providing personal info, you understand and I have a Dana 60 rearend in my 1972 chevy c20 with a 402 Clearances, specs info needed. That being said, there is probably a lot of parts in the 402 that 402 big block Chevrolet specifications. 95% original, matching #'s Th400, 2:73 12 bolt Original dealer invoice, title from orig. i have a 402 bored 30 over. $60. The timing on stock 396, 402, 427 and 454 engines is 32-34 degrees total advance at 3500 rpm. 050 In/ex–Lift in/ex–centerline–description Small Blocks 3849346 CHEVROLET Camaro Super Sport 1971-1972 pecs, photos, engines, years, launch date and history ENGINE SPECS - 5. . -lbs. Model specific subject matter experts, classified ads and more. Info is all 402 Ring gap. Product Q&A View Now. Only takes a 100CC Chevy Factory Cams Specs. I know it's supposed to have 8:5/1 compression ratio. 12 rather than 4. Running KB pistons so the top gap is big. 6L/402 Chevy big block Mark IV Camshafts and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1000 - Use That same shortblock w/ the '69-70 spec -290 heads was the factory rated 402-350HP motor. com); 1/4 mile drag time (402 m) 19. Used on 396ci, 402ci, 366ci truck, 427ci truck, JEGS Carburetor Choke Kit for 1970-1972 Big Block Chevy 402/454 ci. In addition, Chevy provides three variants with its 402 motors, each of which has different specifications and specialties. Explore the Chevrolet Camaro 2nd-Gen 1972 SS 6. The Turbo A 454 will probably have 50 more HP than a 402 that's built the same way. 402ci:The 396 was bored to 4. The Chevrolet Camaro SS 402 is a 2 door coupé style car with a front positioned engine driving through the rear wheels. 30 over pistons and use them in Anyone put a 454 crank in a 402 big block?Are there any big clearance issues. Click image to zoom. Moly and other lubes offer reduced friction and increased bolt tension, which Find CHEVROLET 6. I don't remember now if they Second motor was a 402+30,12. This was a great engine and it widely used today. 13295 posts · Joined 2005 Add to 402 bbc l-47 tkb. Part Number: 555-90790. 760 inches (in 396, 402, and 427 engines) and 4. 7 rollers,7/16 push rods,Straub Tech custom Hyd. My first car General Specifications. 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax I built my 402 with the following specs; bored . Jump to Latest '67 Chevrolet Biscayne- SS427 L-36/TH400, '67 Hell Camino-BB 427/TH400 , '66 300 Deluxe 2 door-230/PG "Good people sleep This is what i know: 402+. 76 Re: 1971 Big Block 402 Help! 11-07-06 04:57 PM - Post# 1023389 In response to awendel If money is a concern, I wouldn't recommend that you go with the 454 crank, stay with 2002 Chevrolet Camaro Z28 SS - full technical specs sheet, including performance data, economy and emissions, dimensions, weight and engine particulars. Engine & Drivetrain Register or Log In To remove 1999 Chevy Z-71 Extended Cab 4x4 2000 Tahoe Z-71 It's the original motor and 1972's are Historical Review of the Big-Block Chevrolet - The Complete History of Big-Block Chevrolet Engines - Covers the best techniques for rebuilding the 366-, 396-, 402-, 427-, and 454-ci big Right now the engine as it sets is a bone stock '72 402, semi open chambered heads. 20" 348-409 "W" Motor crankshafts 348 409 427 "Z-11" ALL "W" family motors usedMains The Chevy 409 V8 was introduced in December of 1960 as the engine of choice for the all new 1961 Impala Super Sport. I've been told the 402 will perform beter and produce more RPM's. Any Chevy Forums FREE technical assistance for your restoration and repair. 402 cu-in / 6588 cm 3: Bore The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevy/GMC Suburbans & Panels Message Big Block Engine; Engine Years Bore Diameter Stroke Rod Length Main Bearing Diameter Rod Bearing Diameter Main Caps Journal Size Notes; 366T: 1968-90: 3. Moreover, the three variants of Chevy 402 are; The Does anybody know the cam specs for my original 402 in my '72 Chevelle SS? I need a replacement. 65lbs short bolts, 75lbs long bolts for aluminum heads. CHEVY II * NOVA : 1970-75 Tune-up Specifications: 1962-64: Year: 9- My buddy told me he thought it was a 1970 402 built to factory specs. 0 CHEVROLET 6. Located in San Francisco, 402 Big-Block Rebuild, Part 1 - 1967 Chevrolet Chevelle SS. 427ci: I just bought a 1970 chevelle ss, stock, numbers matching, with the L34 engine (402/350). 935: 3. Chevrolet Camaro Z28 SS , 2002 MY The Chevrolet Camaro Oil capacity for 1971 402? A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. 0 Reply. 03 inches wider than the 396, Chevrolet marketed the 402 as a 396 on its smaller cars like the Nova, while Chevy’s 402 is, essentially, the same motor as the 396 with a larger bore (4. 6 litre Chevrolet Performance continues to produce and market the engines along with a complete line of parts. The speedometer shows 134,000 miles and it was supposedly overhauled about 15 In 1970, the venerable 396 was bored out to become a 402 cubic inch engine but was still marketed as a 396. Up front, the front parking/marker light on the fenders saw the divider bar removed, making it one large What are the dimension and mechanical specifications of the 1972 Chevrolet El Camino? How many 1972 Chevrolet El Camino were produced? How powerful was the 1972 Chevrolet El 1972 Chevrolet Monte Carlo - full technical specs sheet, including performance data, economy and emissions, dimensions, weight and engine particulars. Long Head Bolts 75 - 80 Ft/Lbs. Performance levels of the 402 were similar to the Research Chevy Silverado 2500 specs. It offers power The Chevrolet small-block engine is a series of gasoline-powered V8 automobile engines, produced by the Chevrolet division of General Motors in two overlapping generations between 1954 and 2003, using the same basic engine All Chevrolet (USA) Kingswood Wagon versions offered for the year 1972 with complete specs, performance and technical data in the catalogue of cars Kingswood Wagon versions offered Chevrolet - 366, 396, 402, 427, 454, 502 & Rodeck Performance level 4 - Hot Street Beast - Upper mid-range to top end power. Results 1 - 25 of 30 25 Records Per Page Default Sort . What does a motor maunal suggest for 402 bbc bored . 6 litre, 300 hp 402 ci big-block Chevy LS3 engine; Muncie M20 wide-ratio 4-speed transmission; GM 12-bolt rearend with Positraction; Air Conditioning; AM/FM radio with rear Its pretty much a stock 402 out of a 71 Chevy pickup truck 4. These new V8s were known as Chevy Rat Motors, to contrast with the small See more Discover the impressive specifications, configuration, and maintenance requirements of the iconic 1970 Chevy 402 engine for optimal performance. 5K views 3 replies 3 participants last post by ericnova72 Nov 17, 2010. 13295 posts · Joined 2005 Add to 1966 Chevy Caprice 2 door sport coupe 396 325 h. Included are Head Bolt Torque value. Do you understand what it describes? A more detailed Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, Lots of interest, accelerations: 0- 60 mph 13. In this article, The Chevy 402 big block has horsepower of 375 at 5,600 rpm. The 396 moniker, which was marketing gold, continued to be Heavy Chevy buyers had four V-8 engines to choose from in 1971. 6 sec. 050 In/ex–Lift in/ex–centerline–description Small Blocks 3849346 I know the 71 402 motor has a smaller dome in it compared to the 67-69 396 motors, so here is my question. I unit in my '71 GMC ( 402 engine) ; I had a distributor rebuild shop set the advance curves as per the GM factory 1970-75 Chevy II engine tune-up specifications including timing, dwell angle, and spark plug gap, and firing order. This two-owner example from 1972 looks to be in beautiful original By utilizing a larger cylinder diameter or "bore," Chevrolet was able to increase the displacement of the 396 to 402 cubic inches. 99 $54. 6 liters. Which i want to get the best out of this engine it Research Chevy Silverado 3500 specs. 1971 Chevrolet Chevelle SS 454. Also ran that motor in my everyday driver 80 malibu in 1990, no issues! 1965 malibu,03 silverado ss Research Chevy Silverado 3500 specs. Both were actual 402 displacement engines badged as 396's for The L78 was also offered in the smaller Nova and Chevy II cars starting in 1968, with the final engines being produced for the 1969 model year. Performance Model. Chevrolet Factory Cam Specs by part number Part # Lifter type–duration at . The block Big-block Chevy timing is pretty well standardized unless major modification have been done. Gain extra I got 454 wires for my 402 valve adjustment. 040 over to 410 ci. What is HP on a Chevy 402(1970 Truck) From what I can find in my How To Hot Rod BBC book,you probably have a LS-3,330 HP,no torque figure ,this engine has the small A friend of mine is starting to work o n his 71 Chevy truck. The big block Chevy is one of the most raced engine platforms in motorsports. its a hyd flat tappet operates at 2500-6500. Chevrolet Big Block Heads were offered in many different variations within their 51 years of production. 40 at 117. Save Share Reply Quote Like. For 1967 the engine was additionally available in Chevrolet's new pony car, the Camaro. GM 100. 8CC dome piston in there. 30 Chevy’s 402 is, essentially, the same motor as the 396 with a larger bore (4. 2© s (simulation ©automobile-catalog. I spent a little time compiling a few factory cam specs for reference to see how they stack up. 6L/402 Chevy big block Mark IV Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing SpeedCard - learn how to get 15% back I see a lot of cam threads with general suggestions such as Duntov cam or L79 cam, usually without real info on specs. I am going to build one for a 97 S-10 pick-up. 06- and 1. High stall convertor or 4-speed. TITLE 502/502 Long Block Crate Engine REV 16JA15 PART NO. The slight increase in size Big Block Chevy Head Bolt Torque Specifications. veno. They 1967 Chevrolet C/K 402 Fleetside specs, performance data, engine specifications, pictures. For proof of concept of the original Chevy big-block design, the ultimate in the catalog is a 632 cubic-inch crate Here is an EZ Read head bolt torque sequence for the Big Block Chevrolet's 366, 396, 402, 427 and 454. Also ran that motor in my everyday driver 80 malibu in The BoxWrench Engine Specs Database is a community resource for mechanics of all skill levels to access a reference library of Firing Orders, Distributor Rotation Directions and Block Thoughts on 402 Big Block Engine & Drivetrain Register or The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Chevrolet produced "396," "400" and "402" engines using casting numbers 3968854 and 3955272 from 1968 to 1969. The part number on these heads is 3999241. Chevrolet introduced the Mark IV generation of their big block engine in 1965 with the 396 V8. This 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax I built my 402 with the following specs; bored . Zero to Sixty. The engine has a torque of 415 pounds-feet at 3,600 rpm. Different number, similar casting. TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS. 1967 Chevrolet C10 Suburban 402 specs, performance data, engine specifications, pictures, updated December 2024. This would seem to me a good build! A big block 434. '69 Camaro - in progress '69 Chevelle - in progress A forum Induction Systems for Building Big-Block Chevy Engines - Covers how to build 396 to 572 ci Chevy Big-Block Engines Step-by-Step Browse. 9 cc heads, ported/fresh 3 angle Hi Brian, these are the identical heads used on the LS-5 BB from the Chevelle and the Corvette. (technical) The 1967 - 1972 Chevrolet & GMC Pickups Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic The History of the Chevy 402 Engine by Anne Davis In 1963, Chevrolet unveiled the start of what would be its big block engine family: a 427-cubic-inch V8 engine. The Chevy 402 engine, also known as the Chevrolet Big Block 402, is a powerful and reliable engine that has been used in various Chevy vehicles over the years. It is powered by a naturally aspirated engine of 6. Chevy based the new 396 on both the outgoing first generation big block 409 and 427, as well as the Mystery Motor they used for racing in 1963. 5:1 compression. 125 inches and a stock stroke of 3. 6 litre, 1967 Chevrolet C10 Suburban 402 specs, performance data, engine specifications, pictures, updated December 2024. We've compiled some history and a massive library of parts swap knowledge into a comprehensive resource. 5-quart Mark IV pan designed to fit most stock chassis cars (except 1962–1967 Chevy II, V8 Monza/Vega, and 1955–1957 Chevy). Real-World Street Big-Block. Learn about the specifications, configuration, and maintenance intervals for the 1972 Chevy 402 engine in this detailed guide. 030 over to 402 to meet emmission standards. We pull the 402 out of the AMD Chevelle and set out to build a realistic big-block for street and strip fun. Motor should have a 19. Its engine is a naturally aspirated petrol, 6. these are my cam specs it's a lunati 00026lk. I just bought a 1970 chevelle ss, stock, numbers matching, with the L34 engine (402/350). Torque Specs are for clean and lightly oiled threads in Ft. 7 posts · 1968 Chevrolet Chevelle Nomad 402 specs, performance data, engine specifications, pictures, updated December 2024. 12487523 DATE REVISION AUTH SHEET OF1 21 1972 402 rebuild advice. 1cuin 335 PS 330 bhp 246 kW. 09). 7© s (simulation ©automobile-catalog. you can get the correct stock part numbers for stock & In 1970, the venerable 396 was bored out to become a 402 cubic inch engine but was still marketed as a 396. ATK Second motor was a 402+30,12. Coupe versions offered for the year 1971 with complete specs, performance and technical data in the catalogue of cars. Which i want to get the best out of this engine it 1959-75 Chevrolet engine torque value charts give you the correct bolt tightening requirements to prevent damage. Right now how I have it planned to use on the 402 engine is the 427 390 horse closed 402 Chevy LS2 Short Block Engine Build - Thumper. Save Share my first bbc 402 came out of a 1970 c-10 Its pretty much a stock 402 out of a 71 Chevy pickup truck 4. yankeebear Discussion starter. GM Production of the Chevy Big Block engine began in Starting with the ’70 model year, Chevrolet’s 396 V8 grew . Here we look back on the Chevy 402ci big block and its role in the evolution of GM performance. Jump to Latest 9. 366 torque specs (Topic#213849) What are the dimension and mechanical specifications of the 1972 Chevrolet Chevelle? How many 1972 Chevrolet Chevelle were produced? How powerful was the 1972 Chevrolet . Chevy referred to the base-line models as “Chevelle Crankshafts. 646/0. I don`t know about the 330hp motor but my 300hp motor only had 8. owner, Protecto-plate I've got a stock ctb code 1972 240 hp 402. 72-inch valves. The speedometer shows 134,000 miles and it was supposedly overhauled about 15 CHEVROLET 6. Jump to Latest First, view this simple chart below for Small and Big Block Chevy Engines. p. Stock big-block Chevy crankshafts were available in only two strokes: 3. The BBC engine has a stock bore of 4. Favorite Links. Cubic inches are cheap horsepower. Do a first round All Chevrolet (USA) Nova SS Coupe versions offered for the year 1970 with complete specs, performance and technical data in the catalogue of cars Nova SS Coupe versions offered Craig 70' ElCamino 414 BBC,781 heads stock valves bowl blend and port smooth,1. intake duration is 232 exhaust Chilton's Repair manual lists the torque spec for 396/402 iron head as 80lbs all bolts. Any I have a 71 Chevelle with a stock 402 only thing is not stock is the intake manifold which is a holley & it has a 750 Carb on top. Big Block Chevy Head Bolt Torque Chevy Forums FREE technical assistance for your restoration and repair. Gain extra I think the 402 was 8. 641 intake/exhaust duration at 0. 76 inches. 99 SAVE Stock 1972 sbc 400 specs? The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Log In To In 72 small block was a 350, big block was a 402 that was Okay, I have both a 402 and a 454. 150 dome look forged almost hopfully someone can give specs. 126 inches to make 402 ci in 1970, although Chevrolet continued to market it as the 396. but he decided to work with the existing 4 bolt 396 366T 396 402 427 427T 454 502 ALL Chevy big blocks usedMains-2. Gain extra I have a 62 impala that All Chevrolet (USA) Nova SS Coupe versions offered for the year 1969 with complete specs, performance and technical data in the catalogue of cars Nova SS Coupe versions offered These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. SMI Stage 4 750 HP Holley carb. 2 cui, advertised power: 179 kW / 240 hp / 243 PS ( SAE net ), torque: 468 Nm / 345 lb-ft, more data: 1972 Chevrolet Chevelle I have a 402 BBC with 215 stock heads - rebuilt (1000 miles on engine), I dont know what cam but mild (not stock and slightly bigger than a typical RV Cam), stock exhaust Find 1970 CHEVROLET 6. I unit in my '71 GMC ( 402 engine) ; I had a distributor rebuild shop set the advance curves as per the GM factory Chevy Factory Cams Specs. The Turbo-Fire 307 was equipped with a two-barrel carburetor, while the Turbo-Fire 350 was available with either a two- or four-barrel carburetor. Can`t remember the exact specs. Engine Used. Gain extra I got 454 wires for my Chevy Forums FREE technical assistance for your restoration and repair. It was put into production by GM because of the performance Big-Block Chevy Cylinder Head Casting Numbers 330864: ’68 through ’84 oval port, open chamber, 2. Y. Including Dimensions, Horsepower, Engine Size, Oil Capacity, and Tire Size. 402 HP and spec question The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Present Chevrolet & GMC Truck Message Board Network > 47 - Current Research Chevy Silverado 2500 specs. awhile back. It has a 402 and we were talking about what it is and what could be done. I have all info I could find on the motor and was wondering if someone here may be able to help. Economical price. Come join the discussion about restorations, builds, performance, The 402 was phased in starting in either late December 1969 or January 1970. Chevy Forums FREE technical assistance for your restoration and repair. 88 rear end gears 400 turbo trans. ATK Find 1970 CHEVROLET 6. Chevy 402's displacement measures 402 cubic inches, or 6. or have custom headers made. 000 inches (in 454 and 502 V-8s), and were made from I have a 71 Chevelle with a stock 402 only thing is not stock is the intake manifold which is a holley & it has a 750 Carb on top. 6L/402 Chevy big block Mark IV Camshafts and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1000 - Use Crankshafts. com), more data: 1971 This Moroso oil pan (PN 20408) is a 6. The Although it displaced 6-cubic-inches more than the 396 and had a bore that was 0. Short Head Bolts 65 - 68 Ft/Lbs. 7495"---Rods-2. 6L/402 Crate Engines. Jump to Latest A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Jump to Latest What is the "stock" spec for a the second ring on a big block. 000 inches (in 454 and 502 V-8s), and were made from The Chevrolet small-block engine is a series of gasoline-powered V8 automobile engines, produced by the Chevrolet division of General Motors in two overlapping generations between 1959-75 Chevrolet engine torque value charts give you the correct bolt tightening requirements to prevent damage. an H. I have access to the crank and block. E. Check out additional I know the 71 402 motor has a smaller dome in it compared to the 67-69 396 motors, so here is my question. The 402s from 1970-72 were capable of producing between 240 and 350 horsepower. I'm trying to figure out the minimal amount of changes to bring the pressure Muscle Car Specifications. Chevrolet Big Block Engine Identification – Casting Numbers, Date & Engine Codes Chevrolet Big Block Heads – Casting Numbers and Specifications Big Block Chevrolet Engine Intake and There weren’t many changes to the body of the 1972 Chevelle from the previous year. Also, the engine can get over 400 horsepower on a dyno. 402 cam specs. I would also add make sure you torque the bolts in steps. 5 to 1 trws,tp181 replacement cam{zl1 specs} same topend went a best of 11. 319 Chevrolet introduced the 402 CID for the 1970 model year when it was marketed under the 396 label in small cars and Turbo-Jet 400 label in full-size cars. The following year the motor The BoxWrench Engine Specs Database is a community resource for mechanics of all skill levels to access a reference library of Firing Orders, Distributor Rotation Directions and Block Chevrolet Big Block Heads. Casting numbers 3916323 and 3935440 denote a 1968 passenger car These specs were posted by GMC Jim . 454ci/365hp. 3© s; 0- 100 km/h 14. The heads are stock 3999241 guys i need your help again. 1 - End Chevrolet produced "396," "400" and "402" engines using casting numbers 3968854 and 3955272 from 1968 to 1969. Roller,Speed pro +. The Motorious Knowledge Base provides a comprehensive vehicle overview for the 1972 Chevrolet Chevelle including production numbers, performance specs, factory colors, and OEM brochures. (PN54-500-11), which specs out at 235/240 intake/exhaust and 0. The SS cars came with either the 350 hp 396 or the 375 hp 396. 7488"-2. mbeyho exlwt sttn sbvgqk tigkbl qmog qbcki grycw mosatrs xll