Le8 454 cam specs It is a hydraulic roller cam with hydraulic lifters. An increase of 52 hp is always welcome, especially when it comes with a sizable jump in peak torque. The article lists an LS4 454 for 1973. It has a 14015445 block casting number which can be either 2-bolt or 4-bolt. 060”, ported/polished steel 702 heads, Comp Cam roller XR294HR-10, 0. 25:1 CR, 215-hp 454, with either two- or four-bolt mains, steel or cast crank, cast pistons, 3/8-inch-diameter rod bolts, open chamber oval-port heads, 5/16-inch pushrods, hydraulic cam, and a Q-Jet carb atop a cast-iron low-rise intake manifold. Sep 18, 2008 · I believe these are the correct camshaft specs, for a 1970 Chevrolet 454 w/LS5. I changed the plugs on my 454 and it seems as if it is missing a little at low RPM. Search Car Torque Specifications by Engine or Model Jan 28, 2010 · I bought a 454 off a friend for 40$ that had a cracked piston. 4L big block V8. I have done it a couple times with positive results. Included are Head Bolt Torque value. For engines produced between 1974 and 1978, the cylinder head bolts require 65 lb-ft of torque. HEI The 454 HO features a cast-iron Gen VI-style block (PN 19170538) and rectangular port cylinder heads (PN 12562920) with 118-cc chambers, plus a hydraulic roller lifter camshaft (0. On this episode of Speed Secrets, Richard Holdener tests a camshaft in a Gen 6 454 truck motor. The kit bottom-lined at $3,499. Mike This 454 cid remanufactured Marine Engines from Tri Star Engines fits years 1977-1992. 30 over) has a comp roller cam,roller lifters,roller rockers,edel performer rpm intake,holley 4780 (800d. Most Mark IV blocks have the bolt holes for the thrust plate already drilled 'n' tapped. Shop & buy marine OE replacement engines online or call (800) 322-5859. Hyper-eutectic Speed-Pro pistons on 502 BBC rods. . Sep 28, 2017 · The kit included gaskets, valvetrain and camshaft, fasteners, and a set of PowerOval 280 as-cast cylinder heads. I am trying to decide if I should put the solid lifter cam back in the block or go with a hydrological cam shaft. The duration figures, which are taken at . 050 inch). Crower leads the market with 55 years experience manufacturing high quality custom products at an affordable price. 08 / 1. From what I have found out, the LE8's have open chambers and are low If you think you see some things that may be wrong, please let me know. Makes for a great street cruiser engine. I want to swap the stock cam for another hydraulic roller that will make ~500hp (6000rpm max) while maintaining Jan 30, 2006 · Can anyone tell me what the spark plug gap on a 454 should be. I have had great success with autolite plugs in the past. Mar 5, 2012 · Hi Denver. 5:1 compression, Edelbrock Performer RPM intake, 850 DP Holley, HEI distributor, Hooker Comp headers with 2” primaries/3. It has the stock internalsand is not as strong an engine as I would like. 510-inch intake/0. 5" pipes. Jan 6, 2015 · Learn about the Chevy 454 7. Dec 16, 2018 · Richard Holdener from COMP Cams swaps a cam in a 454 BBC ~ In this video, he shows you the step-by-step process so you can swap a big block Chevrolet cam yourself… Aug 29, 2010 · 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. Jun 15, 2023 · The torque specs for a Chevy 454 engine depend on the year of manufacture. The 454 responded very well to the cam upgrade, as the peak numbers jumped from 376 hp and 482 lb-ft with the stock cam to 428 hp and 507 lb-ft of torque. Thanks in advance Drew 1967-71 396/402/427/454 Chevy Big Block Factory Muscle™ Solid Lifter Camshaft and Lifter Set During the heyday of the factory muscle car, Chevrolet produced what they thought would be the perfect muscle cars. Oct 24, 2019 · Budget fix for low-compression 454 take-outs: Install a mild RV cam to build cylinder pressure. Compression is approximately 10:1. Factory iron intake, and an Edelbrock Q-Jet carb. Cylinder Heads, Intake and Cam Unlike its earlier high-performance 454 engines, Chevy designed the 1978 engine for truck applications with a goal of low-performance, high-torque output. To help you understand the details of the Chevy 7. I have a flat top piston 454 with 063 heads, 2. He has MSD capacative discharge Here is an EZ Read head bolt torque sequence for the Big Block Chevrolet's 366, 396, 402, 427 and 454. The Chevrolet big-block engine is a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline -powered, V8 engines that was developed and have been produced by the Chevrolet Division of General Motors from the late 1950s until present. The LE8 454 was the most common from 1973 to 1991. The information below is divided into the following sections: package contents, component information, 454 engine specifications, additional parts that you may need to purchase, torque specifications, start-up and break-in procedures, and a service parts list. T400 if that matters. 540-inch exhaust, 211/230-degree duration at . Apr 13, 2021 · I see a lot of cam threads with general suggestions such as Duntov cam or L79 cam, usually without real info on specs. GM 7. 4? Oct 2, 2006 · Help let's pretend a "friend of mine" has just rebuilt his 454 (actually a 468) BB Chevy street/strip car and needs some spark plugs. Aug 24, 2022 · The large cubic inch size of the big block Chevy engine made it a powerful option in both Chevy cars and trucks for over 40 years and is still popular today. Here's what I found on 2 different sites. The early production models came with either a Solid (mechanical) or Hydraulic Cam. Oct 23, 2009 · does anybody know the cam specs for a LS7 454 or know where i can find them? The primary Mark IV engine from 1973 to 1987 was the RPO L-19 454 truck engine with 8. Apr 21, 2025 · Explore common Chevy 454 engine problems, their symptoms, and potential consequences for better maintenance and performance. 19/1. I spent a little time Consists of engine block, crankshaft, connecting rods, pistons, piston rings, cylinder head assemblies (including valve train components), lifters, camshaft, timing gears and chain, timing chain dampener, oil filter and oil pump. Over 6,000 Automotive Torque Specs. 008-inch lift are 268° int. Jan 22, 2023 · How to tell the difference between Chevy big-block engines by generation. 560 lift, 242/248 duration at 0. The Birth of a Legend: 1970-1971 454 Engine Specs The 454 cubic inch big-block V8 roared onto the scene in 1970 as Chevrolet’s answer to the horsepower wars. Jul 26, 2012 · No idea on cam specs but just about all factory pick up truck 454's will be 7. / 274° exh. So why did we pick this as our top Mar 13, 2000 · Can anyone tell me the specs on the Cam which is installed in my 1969 SS 396-375HP? Everything is stock, 4 speed Muncie, 410 gear, Holley 850 double pumper. Does anyone recommed a good spark plug manufacturer as well. Chevy 7. Jan 30, 2024 · Discover the specifications, configuration, and maintenance intervals of the 1985 Chevy 454 engine for optimal performance and longevity. Many similar 454 builds to that on TC mine included. This video shows you the step by step instructions so you can too. 4L V8 info. Top 5 Best Hydraulic Roller Cam For 454 COMP Cams 11-600-8 Thumpr Hydraulic Roller Cam The Comp Cams 11-600-8 is a hydraulic roller cam designed for the 396-454 8-cylinder engines produced between 1967 and 1996. Two versions of the optional 454 were available in 1-ton Chevy trucks. 050 and a 110 LSA, 10. Apr 22, 2021 · I recently rebuilt the 454 in my 79 K-10. The TBI 454 had fuel injectors in the middle of the throttle body that increased fuel efficiency, power and durability. 7:1. It is a mildly built motor. The L19 TBI, or throttle body injection, powered 1987 and later trucks as the second 454 engine option. What is the likelihood of that being 4-bolt mains? Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. Mar 25, 2020 · Re: 454 Gen 6 performance upgrade by FC-Pilot » Thu Mar 26, 2020 5:04 am A cam swap in that package can pay big dividends. Sep 30, 2013 · Hi guys. Where can I find the stock specs on an Mar 20, 2013 · I am looking at a 454 to possibly buy to build up. More coin? Drop on a complete TFS top-end kit. Iirc, peanut port heads didn't start until the mid 80's so there's a chance you might have some decent oval port heads (casting#'s ending 781 or 049) but you'll have to pull a valve cover to verify. I will do further research to make sure they are corrected. You can get a profile that can use those springs, but upgrading the springs and going to a standard bbc rocker setup will open the door to more power. What plug gap and heat range should Dec 10, 2020 · The 5 Best Cam for Stock 454: Edelbrock 7162 Performer Cam and Lift Kit – the best cam for Stock 454 COMP Cams CL11-600-4 Thumpr 279TH7 Cam and Lifter Kit for Big Block Chevy COMP Cams K11-242-3 Camshaft Kit (CB XE268H-10) Lunati Voodoo Cam and Lifter Kits 10110703LK Howards Cams CL120245-12 Cam and Lifter Set Top-rated Cam for Stock 454 List: Table could not be displayed. It is otherwise stock except for the previous owner having milled the heads to get a ~9. First we run the engine fuel injected and then swap on a carb Feb 2, 2004 · 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. They have powered countless General Motors products, not just Chevrolets, and have been used in a variety of cars from other Aug 1, 2023 · Don't get lost in the sea of GM camshaft part numbers. p. Jan 19, 2024 · Discover the specifications and maintenance guidelines for the 1988 Chevy 454 engine, a powerhouse known for its performance and reliability. I have an LE8 454 from an 86 truck in my 68 Chevelle. Jan 22, 2018 · The specs given for that engine (1987-90) with a TBI set up is: L19 - Unknown compression, 230 HP @ 3600 RPM, 385 TQ @ 1600 RPM I would guess a '73 truck 454 would be somewhere between the LE8 specs and the passenger car 454's for '73. Paul CAMSHAFT RANGE & SELECTION CHART SEE INDIVIDUAL LISTINGS FOR MORE INFORMATION Jul 6, 2011 · I have found out so many different information on differences between LS5 and LS4 engines, that I'm completely lost now. 44L Engine Guide: Specs, Features, & More 1970 – 1974 LS5 Corvette Engine Ultimate Guide By the early 1970s, the thriving automotive performance scene had reached a crossroads. The block is from a 79 chevy truck and the oval port iron heads from a 69-70 passenger car. 533 lift cam. Learn the ins and outs of GM camshaft identification numbers to improve the performance of your engine. This guide reviews the best camshaft options available, focusing on their specifications and benefits. Mar 15, 2009 · My 70' chevelle 454 (. If anyone knows different, please update. For some, camshaft technology continues to be shrouded in apparent mystery, as improper camming is second only to over-carburetion on the list of performance blunders. 4L engine, this article explores the 454's specs, common problems, and best mods. But as with any gathering of info, mistakes can be made. Of course all of this is assuming it's an unmolested, original motor BUT Jul 1, 2015 · It was time to dig into the internals and make some power the old-fashioned way with a cam swap on our junkyard 454 engine. That represents a pretty big change in power output from a single component. Someone has been into it and done a lot of work to the engine. 5” collectors. Information and engine specs for the Chevrolet 454 V8 Engine. 97 from Summit Racing. Chevrolet Big Block Camshaft. ,mallory (ready to run )type distributor,MSD blaster II coil. The casting number on the block is 14015545 and the heads are 14081045, both of which point to a 78-87 truck block. While it is true that there is plenty of Feb 24, 2021 · 1970 (454CI) LS5 7. Sep 7, 2024 · Here are my engine specs: 454, bored 0. 88 valves, and a 226 @. I know very little about 454's but have been reading as much as I can find. Could anyone confirm, that difference between LS4 and LS5 (especially '74 LS4 and '71 LS5) are mainly cylinder heads, camshaft and valves? Is it possible to change '71 LS5 Richard Holdener swaps a cam in a 454. I use my Chevelle for cruising around town and on the Oct 20, 2016 · In testing on our big-block 454 Chevy, replacing the stock cam can improve power production by 50 hp or more. It is a . Engine Specs for the Chevy 454 V8 such as horsepower and firing order. Im planning on using this in my 67 Camaro but I figured I might as well find out a little bit about it. Compression is 9. ),factory manifolds with chambered exhaust,4-speed,factory a/c. Search for some of Kettbo's threads. LS4 - unknown compression, 275 HP @ 4400, 395 TQ @ 2,800. However, the Jan 15, 2024 · Discover the specifications and maintenance requirements of the iconic 1973 Chevy 454 engine, a true powerhouse in automotive history. It has 049 heads, Comp Cams hydraulic roller 11-451-8, and roller tip rockers. 7:1 compression ratio. 050/. Jul 27, 2021 · The cam should be a step-nose (Gen 6) style, which uses an OEM thrust plate to control cam movement fore-and-aft; instead of a stupid aluminum or nylon "button" banging against the timing cover. 72). 060” over 1973 block with a steel crank. All the above is correct to the best of my knowledge. more Jul 19, 2016 · Discover how adding a more-aggressive camshaft to a factory engine can dramatically increase power, when the good people at COMP Cams show you how to perform a cam swap in … Jun 29, 2005 · Hi there guys, I got a run on a complete running chevy 454 with a brand new turbo 400 trans for $740. 540/0. Other TC members have shown pretty decent times in the 1/4 with similar combos as well. The drivetrain is from a early 80's chevy May 3, 2013 · I bought a 1975 454 and I'm wondering what the stock cam was/is for that year, all help is greatly appreciated:D Nov 29, 2008 · What is the factory horsepower and torque ratings for a TBI 7. Thanks a lot for your help in Sep 5, 2023 · Hi all I recently picked up a second hand gen VI 454 HO for a bargain. engines besides the LS6 having aluminum heads? According to the Corvette Black Book, the LS6 was rated at 425hp, the LS5 was 365hp in 71 and 270hp in 1972, and Apr 23, 2025 · Whether you’re restoring a classic Chevelle SS or maintaining a heavy-duty pickup, understanding the specs for your specific model year is crucial for performance and reliability. Chevy 454 engine specs, performance, upgrades, reliability. Sep 18, 2025 · It was also found in the 1971-1972 GMC sprint. Jan 17, 2024 · This engine is a favorite of performance enthusiasts thanks to it's robust build and proven track record with mods. 9 comp and have small valves (2. Apr 8, 2025 · Choosing the right camshaft for a stock 454 engine can enhance performance and efficiency. 4L-454ci-V8-MARK-IV Engine Torque Specs. Apr 25, 2013 · I purchased a LS5 last year from a guy in Ohio. The only exception to the stock items are Hooker headers and 3" 3-chamber flowmasters, with 2. The suffix is ALB which equates to a 1986 LE8. Jul 19, 2023 · The camshaft housing was located in the block along a centerline directly above the crankshaft. Feb 24, 2021 · Engine expert Jeff Smith explains how to interpret the specs and figures on the "cam card" you get when you buy a new camshaft May 17, 2013 · Does anyone know the cam specs for a 1968, 396BB with 375HP 4 bolt main engine? I have the block and 840 heads and intake. Crower's high performance camshafts, crankshafts, connecting rods, roller lifters, rocker arms, valve train components and large variety of aftermarket engine parts for international and domestic automobiles, diesels, boats, tractors, motorcycles, and trucks. Part #'s General Motors 3963544 TRW TM642 Sealed Power CS774 Feb 14, 2024 · Discover the specifications and service intervals of the Chevy 454 truck engine, a powerful choice known for its reliability and performance. vpvil tsn hitoqz bzek wooi iymxnx kjw zmrkm kgralk brhp wvk hxke hihda hyddp jlyha