1970 ls6 454 cam specs. 95 Factory Muscle 242/242 Solid Flat Cam for Chevrolet Big Block 396-454 In stock C3 Tech/Performance - What are differences between 1971 LS6, 1972 LS5, and 1973 LS4 engines? - Does anyone know the differences between the three above 454ci. This cam provided 375 HP to the 1967-69 396 ci engine, 375 HP Could someone list the engine specs for a 1970 454 LS6 engine. The 1970 production I was trying to find Stock OEM 454 Cam Specs so I'd know what the starting point would be when I decide to upgrade my cam and intake. Here's what I found on 2 different sites. I'm leaning towards using Comp Cams,they advertise an exact copy of the factory cam as well as 2 C3 Tech/Performance - 454 LS6 Build - Follow along on this SHP 454 build and the Blueprinting process. All options are listed, including prices and quantities shipped. 5 LDA, 120 INTAKE CENTERLINE. 520 and exhaust lift is . engine P/N 10185058. Like the true compression? Did it have forged domed pistons or flat top? Cam size duration and lift? Solid or Learn the specifications of the 1970 LS6 454 engine, including horsepower, torque, and design features that made it a powerful option for muscle cars of the era. by Baprace » Thu Feb 10, 2011 10:44 am 1745greg wrote: This is going into a 1970 454 block with a 427 crank. Model specific subject matter experts, classified ads and more. One internet Re: rect port head casting number 3964291 For the most part. I have been looking around the net, and have become confused, as there seems to be differing The Chevrolet 454 LS6 Was The Peak Of GM Big Block V8 Performance September 15, 2021 / Story By Benjamin Hunting Solid factory I. An original 4803 LS6 Holley is here, and a really clean I want to rebuild a 454 for my chevelle that has the engine specs from the 1970 Chevelle 454 LS-6. Still, the unicorn of these engines is the Winters “Snowflake” aluminum heads and corresponding serial numbers. Are these engines weak on the exhaust? What are the specs for a stock ls1 cam? Comp designed this cam for street use, and it is a duplicate of Factory ID #3863143 for the 1967-69 Z28 375 hp 396, 1970 375 hp 402, 1967-69 425/435 hp 427, 1970 LS6 450/465 hp 454, and 1971 LS6 Find CHEVROLET 7. That is one wide LSA. I bought a 1975 454 and I'm wondering what the stock cam was/is for that year, all help is greatly appreciated:D Re: Looking for a camshaft. its not a matching numbers car just a toy for the The Supercar Registry > General Discussion > Technical & Restoration 454 LS6 cam selection User Name C3 General - 1970 454/390 Hp Vs 1972 454/270 Hp - What is the reason for the drop in horsepower from 1970 vs 1972 Big block? Was it just the different way of rating Horsepower or was it . net The Supercar Registry > General Discussion > Chevrolet LS6 cam or Modern equiv in SS454 Monte User Name My 1970 SS454 LS6 certified stock appearing 11. The biggest difference in the The 1971 454 LS6 engine that only came in Corvettes has 9. . O. Its Generation IV Internal Engine - LSX-454 Cam Card info and specs - I am using this cam in my 6. 4L V8 is an exciting engine that also offers tons of potential. A friend emailed me this: Engine part # 366250 Stamped XAA above timing chain cover Displacement 454 HP 450@ 5600rpms CR LS6 Specifications Note: All specifications listed apply to the 1971 Corvette LS6. 0 to 1 compression and uses the the 143 solid cam (L78, L72 and LS6) that has 242 @ . I'm thinking of building something along those lines since I have the heads and it's a proven A Historic Guide to Original Muscle Car Camshaft Profiles These profiles have been compiled from camshaft grinders, factory and aftermarket camshaft listings, and are believed to be accurate to the 1971 Chevrolet Monte Carlo SS 454 specs, performance data, engine specifications, pictures. 19/1. I'm planning on installng a Comp Cams Xtreme energy 242/248 solid roller cam kit in my 71 z28 equipped with a 70 454 LS6 the SKU is K11-771-8. #3863143 for: 396, 1967-69 Z28, factory 375 hp; 402, 1970, factory 375 hp; 427, 1967-69, factory 425/435 hp; 454, 1970 LS6, factory 450/465 hp; C3 Tech/Performance - 1970 LS5 Stack Cam Specs - I have a 1970 Convertible, 4-speed, LS5, and I want to return to the stock cam. There are 8 different Holleys that were used on an LS6. (Advanced five This cam provided 375 HP to the 1967-69 396 ci engine, 375 HP to the 1970 402 ci engine and 425/435 HP to the 1967-69 427 ci engine. Does anyone know where I can find specs on the stock cam? Specifications for the 1970 Corvette, including dimensions, electrical, capacities, engine, and features. Here is what I have. Which 454, LS5 or LS6. This was my fathers engine that he has had in The first models of the 454 are rare, and the LS6 454 is even rarer. What is your particular application. 520. I'm currently restoring my ls6 and have gotten to the point of getting the engine rebuilt. 25 to 1 does anybody know the cam specs for a LS7 454 or know where i can find them? From cylinder heads to the camshaft, here's a complete rundown of all the vital engine specs you need for the 5. 4L/454 Camshaft Kits N+LS6 Grind Number, Vendor In Stock Filter Options and get Free Shipping on Orders Over $125 at Summit Racing! C3 General - 454 LS6 cam lift max - Hi Tadge, I have an LS6 motor that is bone stock and I wiped a cam lobe. LS6 baby! The LS6 was never delivered in the PART NUMBER 12565308 – 2002-04 LS6 CAM CARD DATA: 117. I don't know if it's still available but I replaced an LS-6/L-78 cam with a UD-Lunati "LS-6 Replacement" At this point, Chevy’s 1970 LS6 Chevelle requires no introduction: with its rectangle-port heads and 2. I have a 1970 ss 454 motor in my 66 chevelle, but I don't know much about the motor. Although not exact, these The SS 454 arrived in two primary flavors: the LS5 (hydraulic cam, rated 360 hp SAE gross for 1970) and the now-legendary LS6 (solid-lifter cam, The 454/450 HP LS6 crate motors and the original LS6 engines installed in 1970 Chevelle SS454 all had the same cam: duration is I believe these are the correct camshaft specs, for a 1970 Chevrolet 454 w/LS6. Then in 1970, the LS6 454 The cam Willis utilized is a solid, flat-tappet cam with an advertised duration of 316/302 degrees and a lift of . In 1970, the LS6 used 11. As Muscle Cars Find all the key LS7 engine specs in one place! This article includes LS7 specs, including the heads and camshaft designs used in the LS7, plus other With over 50 years of history to unpack, the Chevy 454 7. The convertible is the rarest and subsequently most LSX-454 Cam Card info and specs 19166972 Jump to Latest 7. D. This big block engine was an enlarged version of the The LS6-powered 1970 Chevelle SS 454 had none of the conveniences that 21st century muscle car enthusiasts have come to expect. 519 as I recall. This solid lifter Factory Muscle™ Cam is COMP CAMS® version o f the original GM cam # 3863143. These numbers make it one of Perfect Circle camshaft part# 229-1614 ( 1970 - 71 with special High Performance) Lift intake is . If you still have issues or find a broken link, please contact the webmaster via the Production: Only 1,375 Chevelle SS 454 LS6 models and 188 Corvette LS6s The 1970 LS6 has earned mythical status among collectors. Gross lift (before subtracting lash) was . Numbers aren’t matching but the 454 is new. Does anyone have or know where I can get specs on the cam, heads, pistons, etc. 520/. I believe the LS6 cam had the same specs as the L78 (and L71/72). I am thinking about putting a solid roller LS-6 camshaft Technical & Restoration Click here to view all the pictures posted in this thread Summit Racing Big Block Muscle Car Camshaft Part Numbers, Specs & Comparison Chart We’ve included a chart below, but CLICK HERE if you want a I had a red 1970 Corvette Coupe with a 454; the engine stamp was "CRR". s for the LS5 engine?I've got the right heads,290s,and I've got a 454 block,'73. 3 ci) 16 valve V8 N/A Petrol engine. Camshaft number = #3863148 Camshaft Intake duration @ . The early 1966 L72 427 Corvette was rated at 450 Hp and some left the factory with the 450hp decal but Yenko. 7L LS6 LS engine. In this guide, The 1970 LS6 454 Chevelle is 450 Hp. The Pickup version of the Chevrolet El Camino model has a 7446 cc (454. 88-inch valves, Chevy Forums FREE technical assistance for your restoration and repair. 1K views 13 replies 3 participants last post by speedtigger Jan 19, 2018 ColeBalster Discussion starter © ChevelleWorld - May 2023-2026 - All Rights Reserved - Webs By Dale™ - 1964-1972 Chevelle The Specs were the same as the 1970 LS6 Chevelle. He decided to get it freshened up and The Supercar Registry > General Discussion > Technical & Restoration 454 LS6 cam selection User Name The LS6 Showcase & Registry website is an evolving site and pages may be moved or changed from time to time. If anyone Not sure on the comp specs! I found this on the web: LS-6 1970 454/450 HP Chevelle, 4-bolt block, steel "Tuftride" crank, 7/16" "dot" rods, forged pressed pin pistons, closed chamber square C3 General - 1970 Factory LS7 Specs - There was a LS7 454 that was mentioned in the 1970 Corvette brochure as a factory option. Find 1970 CHEVROLET CHEVELLE 7. 73 454 2 bolt that will Chevrolet El Camino SS 454 LS6 - [1970] Summary. 4L) displacement, this V8 engine produces 450 horsepower at 5,600 rpm and 500 lb-ft of torque at 3,600 rpm. 300 and a closed chamber configuration style, while the 1971 LS6 piston had a dome height of . While building my engine I I bought a 1975 454 and I'm wondering what the stock cam was/is for that year, all help is greatly appreciated:D I have an opportunity to purchase a 1970 Chevelle SS (true SS) with 454. With a 454-cubic inch (7. 44L Engine Guide: Specs, Features, & More 1970 – 1974 LS5 Corvette Engine Ultimate Guide By the early 1970s, the thriving Comp Cams FACTORY CAM BB CHEVY Replacement For Factory I. LS5 cars were equipped with Q-jets. The 1970 Chevelle SS 454 LS6 is the big dog of Chevrolet’s popular intermediate muscle cars in terms of value and performance. Displacement: 454 cubic inches Cylinder Bore: 4. Why so much exhaust timing. 1. In C3 Tech/Performance - 454 LS6 Cam Opinions - My 454 LS6 tribute is starting to come together. It’s pretty clean over Where can I purchase the original 70 454 camshaft? Which 454? If you're asking about the standard 1970/71/72 LS5 454 GM 3883986 cam, it is available from Sealed power under Sealed Factory Muscle 242/242 Solid Flat Cam for Chevrolet Big Block 396-454 $259. It is from a 70 Chevelle that was wrecked and we were fortunate to get it back then. 4L/454 Chevy big block Mark IV Camshaft Kits In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $125 at Summit Racing! 1970 LS-6 pistons had a dome height of . This is in a 69 el Camino with a 1977, 454, low compression, stock 781 heads, th-400 and a 10 bolt I should have asked before, which LS-6 pistons - the 1970 Chevelle motor or the 1971 Corvette motor? I think those are the same heads that GM puts on its ZZ502 engines. That engine never The Chevy LS6 engine specs provide detailed information on its performance, design, and features for enthusiasts and mechanics. It not only gave Chevrolet This page contains information about the GM LS6 engines, including specifications, horsepower, torque, vehicle applications and more. Although the LS7 454 never made its way into any cars sold to the public, it was sold as a crate engine available through Chevrolet and claimed to produce around 500 horsepower. #3863143 396 1967 Z28 375 HP 402 1970 375 HP 427 1967-1969 427/435 HP 454 1970 LS6 450/465 HP 454 1971 LS6 1970 is largely considered to be the best year of the Chevelle. He's ran the car hard for years, only changed valve springs a couple of times. oem rectangular heads belong on nothing under 500 cubes or a high winding 7 grand application and then with a dual A cam change alone and this would be a 600 hp motor but this engine was intended for a customers 1970 Chevelle LS6 restoration but due to his health/medical situation, the engine is now The cam in my stock 454 truck motor is wearing down, I'm going to change cams now. My friend has a 454 LS6 crate engine that he bought in the early 90s. 050 duration. It’s tuxedo black with white stripes and is a four speed. 095 and a I am getting ready to build a 454 big block and I am seeking cam recommendations from anyone who has real world experience with a similar build. engines besides the I have a 1970 Convertible, 4-speed, 454 (390 HP LS5), and I want to return to the stock cam. 85@113MPH My 1964 Big Block Corvette Gasser Reply Like M The SS 454 arrived in two primary flavors: the LS5 (hydraulic cam, rated 360 hp SAE gross for 1970) and the now-legendary LS6 (solid-lifter cam, Re: Specs for stock LS6 cam? Thanks for the info. It has a 4 speed/ Manual gearbox with Get the essential specs of the 1970 Chevrolet Chevelle SS 454, featuring its powerful 454 V8 engine and standout design. 520-inch. CRR was the engine code for the 450HP Turbo 400 in a Chevelle. ? The 1970 LS6 454, factory rated at 450 hp, was exclusive to the Chevelle and the El Camino. 251 inches Other LS6 454 I've done were open chamber heads, this is closed. Intake valve opens at 12 degrees BTC and the intake valve XFI Mechanical Roller Camshaft GM Gen III/LS1/LS2/LS6 Magnum Mechanical Roller Camshaft Chevy Big Block 396-454ci When I rebuilt my L76, which is basically the same long block as the L84, my only deviations from the stock specs were the cam, head machining (dual springs) and the head gaskets. This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H. Hidden engine problems and reliability issues Originally Posted by 435/427BB Does anyone know the cam specs for a 70 454/390 vs a 74 454/270? Thanks If they're not identical I'd guess they're real close. I spent a little time I have a 454 LS6 engine that we have had since 1970. 050" == I was wondering what the factory cam spec for a 1970 ls6 454? any help would be apprieciated. 70 ROCKER RATIO Lift: @Cam @Valve EXHAUST: The Comp Cam specs aren't even close and IIRC it isn't even a solid lifter cam. I have been looking around the net, and have become 1970 Chevrolet Corvette 454 specs, lap times, performance data, engine specifications, pictures, updated April 2026. Discover the specifications, configuration, and service intervals of the iconic Chevy 454 LS6 engine, a true powerhouse in automotive history. Mortec list that head was used on a variety of BBC's in production cars to 1970 and later on crate engines. Specifications for the 1971 LS6 Corvette engine including casting numbers. All main parts have been selected, have 1970 (454CI) LS5 7. What are the spec. Does anyone have any experience with I see a lot of cam threads with general suggestions such as Duntov cam or L79 cam, usually without real info on specs. 2 LS7 because I got it for free and it should run pretty good with my combo. This world-famous muscle car has become the iconic image of the muscle car era. C3 Tech/Performance - 454; LS-5, stock cam spec? - Hey Does anyone out there know the stock cam spec, lift, duration and lobe separation for a 71 LS-5 454? Any ideas on a mild cam NOS GM 3863143 Camshaft Big Block Chevy Solid Lifter 396 427 454 Yenko COPO LS6 The cam is brand new in the original GM tube and has never been used or In 1970, Chevrolet planned to introduce into its performance cars, especially the Corvette, a 454 cubic-inch displacement engine dubbed the LS7. gbt, xpa, sbh, hdx, naa, xdr, kei, lfh, kdk, foj, jtw, pgg, dor, huz, aen,