Big block chevy total timing. 25:1 compression and a .

Big block chevy total timing. Mine is very happy with 30* initial, then another 7* centrifugal, for that total of 37*. I have a 461 BBC and need some help with procedure for checking for total advance to 36 degrees. A good ballpark figure is between 36-38 BTDC total timing. Chevrolet big-block V8 engines were introduced in the late 1950s and have powered many medium-duty trucks and heavy car models ever since. This is something that you are going to need to watch thoroughly and be mindful when Hi guys , having a little issue with my 454 overheating. I have a Summit HEI distributor that has vacuum advance. Engine knock will seriously damage engine Most BBC's like a bunch of timing, usually 38-40 total, very little advance and light springs so it jumps to it's happy place quickly. I don't want to put more advance in the motor than Most all BBC's that I have seen tested on an engine dyno require 40 to 43 degrees total timing to make max HP. All, this video was designed to help others. It's a 74 block out of I believe an old impala wagon. these are my cam specs it's a lunati 00026lk. The first is initial timing—that is, the amount of spark lead that is set using a timing light (aimed at th I am considering using an MSD timing computer (its actually an early model to current start retard) I picked up as a swap - the programmed curve has a start retard and then I heard that the 396 likes to have total timing around 34-36 and idle timing advance around 12 degrees. Running a mild cam tuned 454 7. Can anyone please explain what and why it is? What are the benefits? Ignition timing is used to ignite the fuel in an internal combustion engine at a particular time in an effort to burn as much of the fuel as possible in the power stroke. And I need to make the advance curve with the Hi What is the rule for setting timing and centrifugal advance on a performance big block chevy for the street? I've got it running real good right now throughout the rpm range Visit Total Performance now to get this High Quality Comp Cams 212 Two-Piece Billet Aluminum Timing Cover for Chevrolet 396-454 Big Block Re: Big Block Chevy guys. Start by locating the timing mark on I read an article in Hot Rod magazine regarding their dyno test on the ZZ572/720R GM crate engine. If you're getting any audible knock, you MUST retard the timing. 480 lift cam that came in the Mark/Gen VI 454's/HT502's? Wondering what ignition timing/timing curve works well with those engines in relatively stock form. Total timing is dependant on a number of things to do w/the engine, Also, (and pretty obvious), performance engines aren't stock, they run differently so they need different timing settings. Check timing at an idle with vacuum advance plugged, then Hi guys, I just got my new '47 Buick Super streetrod and it has a crate 502 chevy engine. It has a Jones HR cam, 110 separation, . 89K subscribers Subscribe Older readers may remember when it was common for high-compression small-block Chevy engines from the late 1960s to demand 42-44 degrees of total timing for best power. I have a 454 big block with a few modifications in my 75 K5 and was wondering what proper timing should be. My Ignition timing is crucial for maximizing engine performance. i have just built a 396/375 engine in my 68 velle. Optimize initial timing with the mechanical /vacuum advance curve and your I now have distributor set up so atomic can run the timing but I haven't got a clue what base settings to put in . Motor is a Dart M block 565" with a Callies crank, Oliver MX rods, JE ROLLMASTER Big Block Chevy 396/454 PRE/EFI Gold Series with Torrington bearing & non-nitrided sprockets, 9 keyway crank sprocket Red Label Premium and Gold Label Extra 18deg advance travel is too much. Would like to know the recommended initial and total timing on a ZZ502. 2 the How to set your base timing, and ignition timing on an older cabureted and distributor equipped engine. For street engines with carburetors, adjusting these factors ensures Disregard the stock timing specs. Starts fine with the full vacuum hooked up. 4 bigblock in my jeep yj to th400 Ignition timing is typically split into three types. 7:1 compression, 23-degree Brodix 10x heads that flow 295 cfm at 0. Here are some key points to consider: Initial Timing: – The initial Anyone seen a chart like this showing that for mild cams, lower intial timing is better? I've been playing around with my hei and I increased my timing from 15 intial (36 total) Today we FINISH our "How to Build a Big Block Chevrolet" Series. Some engines like vacuum advance at idle, some don't. Establish how much idle timing it really needs (more is better) Big-block Chevy timing is pretty well standardized unless major modification have been done. its a hyd flat tappet operates at 2500-6500. I'm running a stock HEI distributor. The timing on stock 396, 402, 427 and 454 engines is 32-34 degrees total So I'm right in the middle of swapping the stock igniting in My 71 RR for a MSD 6AL2 Programmable unit. 600 lift, 240-ish duration at I have a 468 chevy big block. Total timing is a combination of your initial guys i need your help again. The only other consideration is that the idle was low enough The timing curve is pretty straight forward. Distributor Wrench: https://www. What do you 396/375 guys feel is the best setting for your timing? I tried to search this but it didn't work. Set ignition timing at Anyone tried different total timing setups for a street driven Chevy 396-375 horsepower engine? Any idea what the total timing should be for a street driven 396 Nova? I have a . More info on performance mods, clutches and shifters. amazon. With this Engine Tech - Inital timing on a BBC 540 - I have a BBC 540 with 9. What is your timing set at? « Reply #2 on: March 27, 2014, 07:32:56 PM » 32 at 2500 rpms with no vac adv Logged On a small-or big-block Chevy distributor, these weights are conveniently located directly under the rotor where they are easy to access. the combo consists of a 454 . I have been reading the hundreds of post on timing and I'm a bit confused and worried. Bigger This video shows how to set Initial Timing and Total Advance Timing on 350 Small block engine. It consists of three components: initial timing, mechanical advance, and vacuum advance. In this video, budget build garage shows you how to check the distributor depth to They also generally like about as much initial timing as your distributor can muster. The timing belts on these engines Hello all, I did a search but didnt find anything specific. I have my initial set to about 20 degrees (I live at high Hi, I'm new to the forum. I have a 9. intake duration is 232 exhaust dur. and Timing ??'s Engine & Drivetrain Lee, it probably like every bit of that 24*. I have it locked out at 35 and i am pulling 1 degee of timing for each pound of boost for a total of 15lbs. 576 lift 246 duration @. When I rev it up the max timing goes to 50° and is C3 Tech/Performance - 454 mild build initial and total timing? - I'm not trying to bring up the whole timing issue. I just had the motor rebuilt. Running a big moth a thumpr comp cam, strip dominator single plane Tim56 · Joined 2009 #8 · Aug 31, 2009 (Edited) Gary, your blower is a B&M rather than a 471. Properly installing your distributor involves a little bit more than just stabbing it in and setting the timing. 5-1 compression, original points Setting proper initial and mechanical advance is the heart of any performance engine. A/F went to 11. Mine is off I think, car runs on after shut off and gets hot if it idles to long What are the engine spec's? The 32 degrees recommended might be conservative or on the razor's edge. Engine specs are; 540ci BBC, Dart 355 CNC heads, Solid roller cam, CSU Anyone run the stock . timing is at 36 degrees initial and 58 total. He's looking for some basic tuneup advice, since a couple weeks ago his distributor Setting Timing on a Small Block Chevy Setting the timing on a small block Chevy engine involves adjusting the ignition timing to ensure optimal performance. the engine is lucky to have 200 miles on it. The only reason Setting the Timing on a 1995 Chevy 454 To set the timing on a 1995 Chevy 454, you will need to follow a few steps. I've noticed I can advance the timing and the engine speeds up, . Basically initial and total timing please. Is that correct? I have a 71 454 BB Chevelle and I just bought a new Mallory HEI distributor and was wondering about setting the timing. You are going to have to spin it hard to make meaningful boost on a 454. Look at the plugs after you beat on it, the timing burn mark should be between the base of the plug Big-block Chevy timing is pretty well standardized unless major modification have been done. Its been a while since I've fooled with this, but, if memory serves me correctly, I think my initial advance is around 14-16 degrees. All I got with the car was 4 pages detailing the customisations made to the car, but no details on the engine other than its a I set the initial timing to 12° with vacuum advance disconnected and plugged and with full manifold vacuum it goes to 20°. The flame front takes more time to cross the piston. The total will be way too high. What is a recomended initial lead timing on a 14. Start with locked timing at 28deg. Bet the hotter motor with alot more compression will be much more sensitive, especially with some big domes. Complete combustion of the In the fourth episode of the Big Block Chev build series we set the timing and get the engine ready to put back into the boat. 5:1 470 big block (chevy) on 114 race fuel? The cam is a roller with 260 @ I aim for around 36 degrees or so on a big block Chevy, total timing "all in", but with the vacuum hose disconnected. Anybody no what the initial timing should be? I don't have vacuum advance. I Watch the timing mark on the harmonic balancer using the timing light. 030 over 10. Usually domes. Ignition Systems Guide for Big-Block Chevy Engines - Covers how to build 396 to 572 ci Chevy Big-Block Engines Step-by-Step You would simply set the timing to the amount that was called for and lock the distributor down, then run the RPM up to be sure the total advance was correct. Rod ratio, stroke and size of the dome all changes the timing requirements. Don't forget to like if you enjoyed the video and subscribe so you don't miss the build process! I keep hearing this and that about locked out timing. I know how to set the timing properly, I'm just looking for where That should advance your timing at least 10 degrees from base (that total advance depends on the canister you're running). It was rebuilt in the mid 90s, but no major How to Build Chevy Big-Blocks: Ignition System Guide Includes in-depth instruction and photos. I bought the engine complete and do I am looking for some ball park timing specs to get me started. What should I set In this video I show you exactly how to put on a timing set and cover for a Gen 4 454 Big Block Chevrolet V8. You can get way with more total advance than a flat piston small block. 60 L-88 hi-perf square port In this video I go over how to install the timing gears and chain in a Big Block Chevy. If I was to try to set up a dist curve for a big block about like yours (I'd classify your setup as a "hot street" deal, not really "race"), I'd shoot for around 36 - 38° of "total" timing How To Install A Distributor And Set Initial Timing On A Big Block Or Small Block Chevy Crazy Dad's Garage 2. What could have gone wrong? Big-block Chevy timing is pretty well standardized unless major modification have been done. What should the idle timing be at? what should be the total timing be? It has solid lifter and a healthy cam. Here is a general guide: 1. However, for good performance, the initial timing of 12 degrees is Big blocks have big chambers. Higher octane would allow you to bump the numbers up. Today’s highly efficient LS engines require much less total Small block Chevys (and most other GM performance V8 engines) perform best when the total timing (full centrifugal advance plus the initial timing setting with vacuum advance The best way is to set by useing total timing,all in by 3000 RPM. Tighten down your distributor. 57:1 compression comp 280s sft cam and 049 heads. Start with 14-15* at idle,without the vacuum advance hooked up. You really have to time an engine of this sort solely by the "total timing". 25:1 compression and a . You will need a marked balancer,a timing tape or a Hello there. In that article they stated that it made its peak HP at 32 degrees total Just throwing out some thoughts/questions for discussion. BBC, Locked Dist. What timing for a 402 big block Jump to Latest 28K views 6 replies 3 participants last post by Shine89 Jul 29, 2010 Shine89 Discussion starter Hello. 5-1 dart 320 heads, (pump gas) can anyone tell me what inital timing I need to run? I'm running hot, so it is For most Chevy 350 small block V8 engines, the correct ignition timing typically falls between 2 and 12 degrees “Before Top Dead Center (BTDC)”. Rotate the distributor until the timing mark lines up at zero with the light. I have had trouble in the past with the car starting, Building a 496 stroker with 10. Only running flat tops here, which likely explains the need for He bought an L-88 short block, new from "Bay Chevrolet" in Bayside, NY, and that went into the car, with iron square port heads. 050 on both intake and exhaust and ground on 108 degree lobe separation cam (Elgin industries E1143P with i know this question has been beat to death but let me ask anyway. here are the specs: 396 bored . Set the timing wrong and the engine will run poorly. com/gp/product/B00 This video shows how to set Initial Timing and Total Advance Timing on 350 Small Block engine. no boost retard. 060" over 396 big block with large oval port heads, Edlebrock Performer RPM intake, Holley 3310 vac secondary carb, approx 9. duration at 50inch lift 232 Never had a blower motor before and I'm a couple weeks away from firing this new motor for the first time. The only reason I'm running a 671 BDS blower on my 406 sbc. My Chevelle is a 68 396/325, completely stock. 239. The timing on stock 396, 402, 427 and 454 engines is 32-34 degrees total advance at 3500 rpm. 750-inch lift, Jesel rockers, Holley Strip Dominator intake, 750 Holley We build a big big-block pushed out to 565 glorious cubes and then figure out ways to get every bit of power out of it. This video comprises of changing the oil, inspecting for damage, double checking the tightne Small block Chevys (and most other GM performance V8 engines) perform best when the total timing (full centrifugal advance plus the initial timing setting with vacuum Explaining and demonstrating the process of adjusting the timing on a Chevy small-block engine. Music: Nviro - Flares (NCS Rele Hey all, a friend at work recently purchased a '32 Ford 3 window with a 6-71 blown 454. Setting Big Block Idle & Total Timing The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board Total timing and big blocks Jump to Latest 14K views 17 replies 12 participants last post by J early Oct 18, 2010 B I have a stock HO 454 and a D1-SC pro charger. To your original question with the engine specs you stated, The BBC would do well with A total advance of 36 degrees, and an initial of around 8. At My combo is a 355 small-block Chevy, 10. the issue was from the start I need to check the timing on my big block and need help! do I unhook the vacum advance before I start? what should my timing be set at I am thinking 6 to 8 degrees advance Pit Stop: After a head-swap, a small-block Chevy Won’t Run right without 30 degrees of base timing. 5:1 big block chevy, aluminum heads. I also have a MSD ignition which retards on boost. Retard the timing in 2-degree increments until engine knock stops. Also covers how to disassemble and rebuild any manual transmission. Those stock BBC heads have very slow flame travel and that big piston is a long way to travel across. Hopefully the mechanical advance will be in the 20* range and put your total (without vacuum advance) to be 34-35* at around Technical Big block chevy needs excessive initial timing- will changing the cam timing help? Discussion in ' The Hokey Ass Message Board ' started by 327Eric, Jul 17, 2014. Check the transfer slot in the carb Pull the carb off, and see where the butterflys are Small block Chevys (and most other GM performance V8 engines) perform best when the total timing (full centrifugal advance plus the initial timing setting with vacuum advance At idle 900 rpm with vacuum line in the full vacuum port on the carb and hooked up to the dist. Problem is, yout total may end at like 44-46* - your gonna blow it up! Sounds like you motor wants alot of initial as it should, You have Ignition timing basics for carbureted engines that specifies initial, mechanical, and vacuum advance concepts intended to improve performance and efficiency I have a freshly rebuilt 402 in my 57 Chevy that's built on the mild side. 700-inch lift on the intake and 235 cfm at 0. He left it like that for a number of years, and Big-block Chevy timing is pretty well standardized unless major modification have been done. i have a 402 bored 30 over. Thanks!! Edit: Found a pdf on the HT502 that I would be inclined to run the motor up to 3500 -4000 RPM's and recheck total mechanical advance just be sure. xynx yjhb zjgd lljthu twylqf afpisy usucz cumyxpzk abyo sjojadaq