Mopar 440 internal or external balance. This is the casting number on it though 4006830-360.
Mopar 440 internal or external balance. All 318's are internal. Oct 26, 2020 · A Small block balancer with fit a big block, internal, external, same deal. carnuck . 340 balancer lesson for the day. That meant I had to determine if the motor had an internally or externally balanced crankshaft. Jul 25, 2013 · (318 is internally balanced. let me tell you about my situation. Sep 18, 2012 · If an internally balanced crank is used with an external balanced converter or dampener (or vise- versa) a severe out of balance condition will occur. So, I understand that if I go with a balanced rotating assy, I need a zero weighted torque converter/flywheel and harmonic balancer. Here is what I have: Block # 2780930-340-S Crank # 3462387 Balancer # 3751160 Rods # 2899495 (6) & #3751015 (2) New bushings Apr 2, 2006 · Wondering about internal or external balanced motors. There is only one stock balancer for a cast crank externally balanced crank. Your engine is external if it is factory. A 70-72 440-4 along with 70-71 440-6 engines are externally balanced but it is a fairly small balance weight on the damper & flywheel/torque convertor Oct 30, 2009 · The '70 and '71 440 HP engines are externally balanced due to the weight of the "heavy rods", '72 and later (except for the few 440+6) don't need external balance even with the heavy rods because the piston weight is reduced. It had aftermarket pistons installed at the last build. and a New Hughes 24-30 stall convertor. Your quote is a down and dirty rule on cast and forged balancing. These dampers are Find DODGE 7. You could also compare your harmonic balancer to the internal and external balanced models shown here. Members Profile. i haven't seen the other crank for Sep 16, 2012 · Yeah, all the later model cast crank engines were external balance but I've seen a factory internal balance 6 pack engine. Mopar utilized two different balance operations back that . Cliff Ramsdell Feb 24, 2006 · Not all 440 six pack engines were externally balanced. ) Feb 4, 2010 · just incase you dont know,,,the current 5. Jul 2, 2010 · KMJ sells a plate that fits between the crank and the flywheel to provide an external balance, allowing you to use a neutral balance flywheel (which I am now almost completely positive is what you have). New BM flexplate 237, the one with crescent notch. The 69 440 6 pack doesn't even have heavy duty rods. I had my 408 internally balanced and it cost me $225. 340s with a forged crank were internally balanced, 340s with a cast crank were externally balanced. When I installed the Passon a855 5 speed I replaced my old flywheel with a billet steel flywheel. All 340 motors used HD rods. if its perfectly round without any offset weights then its internally balanced. My understanding is that ALL 71 steel crank 440 motors were forged 87-95 (Includes LT1/LT4 Opti-spark) Internal Front/External Rear 96-2000- Internal Front/External Rear LS Engines-Internally Balanced LT Engines- (2016+ model year) Internal Balance Big Block Chevrolet W Series (348-409) Internally Balanced 396-427 Internal Balanced 454-502- External Balance 572- Internal Balance GEN VI L29/L21- External Jan 3, 2016 · Fits ALL Mopar V8 engines (even small blocks!) Works with 10. 5 inch clutch only. 9 360 magnum motors also require a weighted converter or flex plate,,,these are not the same balance as what that 340 needs,, the old LA 360 also uses a weighted converter or flex plate,,but i do not know if the 1972/1973 cast crank externally balanced 340 motor uses the same converter,,,i would hope it would be that easy,,but knowing ma mopar it might Jan 20, 2022 · I used to use neutral balanced flywheels for everything back in the day and the old Direct Connection race book used to give all the specs for material removal to balance for external balanced motors. They include a small weight which is bolted to the back of the flywheel. Feb 1, 2018 · IDK of any other flexplates that are weighted except the B&M BVVC as several different weights are needed for various crank combinations #1 choice is to internally balance the engine #2 is to loose 6 pack weight rods and heavy oem pistons 3 Prefer balanced flexplate to balanced converter due to variability and availability- an unballanced converter is an unballanced converter- a converter with During this overhaul, each part has been balanced, or replaced by a balanced part. Apr 3, 2011 · ~~~~~ all internally balanced engines had the thin harmonic balancer. To avoid trying to find a external balance flywheel and to have pilot hole provision for my 4 speed, I would like to put the 413 crank in the 440 and not remove the heads. I also have a 413 steel crank from 1964- very good condition. Btw, if you have a external balanced wheel on an internal balanced engine or vice versa, you will notice vibration before 2000 rpm and it won't be going away by 3000 and it's pretty severe too. Sep 14, 2006 · Boy, what a couple of weeks! Found out the 440 needs built, broke my windshield, got told I need surgery, and now the machinist says that it's a hassle to balance a 440 with an externally balanced torque converter. 2L, Each. It is really just a juiced up 440. Good luck, Mopar_Maniac #3 Flywheel, Steel, 143-Tooth, 30 lb. I didn't change the flex plate. I am getting a new 440 which is a 1974 block but has a steel crank which I am guessing is internally balanced? I currently have a 76 with a cast iron crank that is externally balanced and has a huge dampner on it. All forged 340 cranks were neutral or internally balanced. If you have the B&M offset balanced flex plate for the 360,you do not need the convertor and can remove the weights on the convertor. I had done 360’s, 440’s and even a 400 with zero issues. Shown above is damper #3614374, used on 400's with external balance cast cranks, which can usually be found in a passenger car and/or automatic trans application (applications with 400 engines and manual transmission applications used forged cranks. 360 internal or external balance. externally balanced engines (340 or 360 or 400 or 440 with cast cranks) use a engine specific balancer (360 is different from 340 is different from 400 is different from 440) and the flex plate OR torque converter will have an May 15, 2015 · Seeing that the engine was internally balanced I needed a zero balance torque converter. If he was inside the motor, its teardown time. Oct 10, 2010 · I have a late modle low mileage 440 with cast crank. , Internal/External Engine Balance, Mopar, Big Block, 440, 7. all the ones I've seen were all external including the 70 and up 440HP 4 barrel. Nov 24, 2008 · All 360's are externally balanced. Jul 9, 2002 · 77 440 internally or externally balanced? It should have a cast crankshaft, and be external balance. Apr 20, 2016 · ^^Bingo, this fucking CLOWN has no business working on a Briggs & Stratton. Sep 27, 2022 · Casting number on the crank would help verify whether external or internal balance. Jan 25, 2023 · For example, the 340, 383, and 440; these were external balance with a cast crank and internal balance with a forged crank. i also have the other motor and was told it was a late model so i assume it is externally balanced too. I see no additional balancing on that shaft in the pictures you have shown. Sep 12, 2018 · thanks for the replies. (made as running change during 1972 model year). Includes mounting screws. or maybe not, about balance, cranks, and rods. 83 out of 5 stars Nov 29, 2006 · It was split in 72 they went to externally balanced 340 motor. 020 oversize cylinder bore. All cast crank 340s use the same external balanced harmonic balancer. Externally balanced cranks can be "converted" to be internally balanced by adding heavy Mallory metal - but that can get spendy. Good if you're swapping neutral balance converters. Cast crank 340's are externally balanced, but even less than a 360 Magnum. And yes, I was already thinking the same thing, check the converter for a balance weight, if this guy doesnt have enough sense to know why theres an extra chunk of offset metal on a balancer, he SURE AS HELL isnt smart enough to add the balance weights to the converter. The other route they went was to balance to engine using the weights on the torque converter. 360 balancers are strange looking, like an egg where the balance is. rebuilt the motor, some goodies in it etc etc. Some engine families, such as the later 318 (5. Back in the 90's it was popular to remove the Sixpack rods cause they are so heavy they create more stress then the extra mass adds in strength plus it slows the engines ability to rev. i think that the external balanced were stamped cast crank only or something on them and they were alot thicker. Since the engine has had the problem from day one it sounds like an existing problem. The PRW unit reads like it has to be balanced to the assembly From their web site "SFI-Rated FluidGel Harmonic Damper - Mopar 383-440 1958-79, 7. This is the casting number on it though 4006830-360. Jul 24, 2023 · Is internal balanced or external balanced better in general, or does it really matter, assuming you get the right combo with the rotating assy chosen. (The whole term of 'external balance' is a bit misleading anyway; it is just a setup where part of the counterweight is external. Oct 26, 2011 · Externally balanced engines will have a significant weight placed off center on the harmonic absorber and flywheel. the customer purchased a 440Source Harmonic dampner and Externa Sep 3, 2002 · If your balancer says "use on cast 340 only" it has a detroit balance added to it, ie external balance. external balance Posted: Mar/09/2012 at 9:31am 66 440 Convert 232 Auto. Doug Oct 26, 2020 · A 70-72 440-4 along with 70-71 440-6 engines are externally balanced but it is a fairly small balance weight on the damper & flywheel/torque convertor They run a forged crank but they also run heavy rods 73 & up cast crank 440's are all externally balanced with a big weight on the damper & flywheel/torque convertor. it is covered up with tarps and i don't want to uncover it right now. Find Mar 9, 2017 · My buddy and I are putting together a pretty much stock 1973 340 small block and I am not sure on the whole balancing issue. These 440s (71) have internally balanced forged steel cranks. Internal (27) External (2 Jan 22, 2023 · Does anyone have access and willing to share the blue print from the direct connection chassis manual on modifying an internal balanced flywheel for an external balanced application? Putting a 4 speed behind a cast crank 440, have several 143t neutral balanced flywheels so I can afford to ruin one. Send Private Message. 2L) Magnum were all internal balance and the 360 (5. Jan 21, 2021 · Near as I can tell, it's around 04/01/72 when they changed over from forged to cast cranks. They had an internal balance engine that need no external weights to help in balance. There is so much info between the 340/360s when it comes to internal vs external and so on. Aug 7, 2015 · I found a running 440 (cast crank) out of '72 Imperial, swapped it out. I have a motor at the shop right now that was a 75-78 motor home crank, heavy rods and balancer. An external balance motor can be made internal balance by a good machine shop. If you're going to swap in a forged crank in place of a cast crank, I'd rebalance the engine, get a '72-up 318 harmonic balancer (so you don't have to modify your crank pulley), remove the weights on your torque converter (or get a 318 flywheel if your car has a manual trans), and reuse your existing Mar 28, 2014 · The research I did was a year ago. When using these for internal balance, simply unbolt the weight on the rear of the damper. Mar 20, 2013 · Forged cranks are internally balanced - with the exception of '72-'73 440 6-pack which used a forged crank and external balancing to compensate for the heavier rods. The neutral balance fly does nothing for the engine balance, and the plate provides the external balance you need for the 360. The balancer has a offset on the inner part (the part with the keyway) to make up for the material that Oct 7, 2019 · Internal balance, for the harmonic balancer, external balance for the flywheel flex plate such as 87-95 SBC including LT1 and LT4 Opti-Spark engines. The B&M flexplate 10238 doesnt apear to be available any longer. but generally speaking, all 383's had a forged crank, all 400's were cast crank, all 340's up to 73 model year were forged, then in 73 some were cast cranks, 318's are all internally balanced engines, 360's were all cast externally balanced engines, 440's up to 71 were Well, you did not have it internally balanced if it was an external balance damper up front; the weight changes were necessarily inside but the front half of the engine would still be considered external balance. Apr 20, 2014 · If you are sending your 383 to be balanced then chances are it will be internally balanced like all forged crank 383's. 440's equipped with 3x2 barrel carbs were also externally balanced to Find CHRYSLER 7. I purchased the flywheel new from Summit and I will attempt to attach a drawing I have of it but I don't remember any identification number on it but on my old flywheel has 2264598 stamped on it if that means anything. Its easy to balance a heavy rod crank for use with the stock small Mar 4, 2003 · 68-71 340=forged crank, internal balance 72-73 340=cast crank, external balance All 360= cast crank, external balance 66Dart_GT you wiped out # 1 mainbearing because the 73 340 has the cast crank and needs a balancer from a 72 or 73 340. 9L) Magnum were all external balance. The 318 from 67 on used a cast crank and the motors were internally balanced using non These can be used for either forged crank (internal balance which includes our stroker kits) or factory 440 cast crank replacement applications. This combined with the Mopar weld on weight package (4120241) could do the trick. The newer Magnum 360 are also externally balanced, but take a little less external weight because of lighter internal components. The 'A' or upside down, should indicate . What I am wondering Feb 15, 2013 · What's your total build cost, $6,000? That means $300 is equal to about 4% of your total cost. Jul 16, 2023 · In this video I balance a 440 cast crankshaft, as most of you know they are external balanced. He says to grind the weight off the converter, then he can balance the engine to "zero at the back" Does this make sense? Aug 24, 2020 · Classic Mopar Tech. Oct 11, 2015 · Do you know the history of this wheel and what type of harmonic dampener are you using on the front. ) none of the items should have bob weights or halfmoons cut out or anything like that. The difference is the timing mark's are in different places so the timing covers are different to allow for this change. Aug 13, 2007 · I don't know what pistons are in the block or really much of the engine history. The 318 was internally balanced for it's production run. For internal balance applications, simply remove this bolt-on weight. Mar 16, 2013 · Here's some things you may know. Harmonic Balancer, OEM, Internal Balance, Nodular Iron, Natural, Chrysler, 383, 400, 440, Set. Jun 1, 2002 · Internal or External: bigj3341: Vintage MOPAR chat: 14: 02-12-2007 08:28 PM: Internal or external balance(LA motor) BEEEEEP: Performance Talk: 4: 11-29-2006 11:08 PM: Internal/external: JYDR22: Circle Track Chat: 7: 03-07-2006 02:17 AM: Internal Vs. . Local time Feb 5, 2024 · The early 340 neutral harmonic balancer and the later 340 neutral harmonic balancer are balanced the same. Oct 26, 2020 · The torque converter needs the weight for a cast crank ( external). but if you can post a pic of the harmonic balancer that would help. 2L/440 Mopar big block RB Harmonic Balancers and get Free Shipping on Orders Over $109 at Summit Racing! Engine Balance. i have a fed with a 440 stock externally balanced motor in it. Oct 26, 2020 · A 66-69 440 including the 69 440-6 are all originally internally balanced. The 73 340 should have a dampener on it that says "use on cast crank 340 only" or something like that. Thread starter philcollins; Start date Aug 24, 2020; Aug 24, 2020 #1 philcollins Well-Known Member. Flywheel Balance Weight - Six Pack We offer this flywheel weight which bolts onto our 113-1014 flywheel (or McLeod equivalent) and will convert it from neutral balance to external balance when being used with a six pack (heavy rod) setup. This is what I have in one of my cars That was the the differcult answer. 25″ OD, Black Anodized, Internal Balance. External Balancing of Small blocks: moparmadman440: Performance Talk: 6: 03-04-2003 12:29 AM: 73 Oct 26, 2020 · The balance job will cost less if you have already balance rods( or should). When changing the parts over, my crank pulley wouldn't bolt up to the balancer, so I swapped it out for one from the 426. In that case you would get a converter with no weights on it and a regular MoPar flex plate. Quote Reply Topic: internal vs. These can be used for either internal or external balance applications. We don't know what you're building, but you can get an external balance one, so you don't need the weight. Total cost less than $100. ) It measures 7 1/4" diameter by about 7/8" wide. This allows you to Sep 7, 2014 · The 440 source fluid damper specifically states they are for internal (neutral balance) only. Engine has a large vibration first startup and a little tuning, literally too much vibration to adjust idle Jan 13, 2006 · The 360 comes as a cast crank externally balanced from 71-92. Apr 25, 2012 · what is the easiest way to tell if my 383 is an internal or external ballanced motor with out pulling the oil pan! had flexplate on it when I got it! It is a 71 383! Jared Sep 26, 2022 · 440 (1966- 1971 with forged crank) - Internal balance 440 (1972- 1978 with cast crank) - External balance 440 "Six Pack" (with forged crank and heavy rods) - External balance Oct 26, 2020 · With a little research I see 440 source sells a bolt on weight (#200 1139) for the standard balancer for a heavy rod motor. 0 out of 5 stars Feb 9, 2024 · Here we go! 78 motorhome 440, external balance. You can tell by looking closely at the harmonic balancer or "damper" - if smooth and free of add on weights it is internal balanced. Forged crank 340's are internally balanced. Part Number: MCL-464202 5. Internal (27) External (2 Mar 26, 2008 · need to know what year it is first of all. The simple answer is, take a picture of the harmonic balancer (front crank pulley) We should be able to tell you is this balancer originallay was of type internal or external balanced type. The internal balance gives you the freedom of not worrying about a specific harmonic dampener or flywheel/flexplate to keep the engine in balance. These can be used for either forged crank (internal balance which includes our stroker kits) or factory 440 cast crank replacement applications. If your flywheel just has the normal drill pecks in a couple of places then it might be safe to say it's internally balanced. Nov 4, 2002 · You need to get a Mopar chassis manual! It tells you how to balance the engine flywheel for the heavy rods! There is a differance in the heavy rod cranks and standard cranks! All 440 with steel cranks are INTERNAL BALANCED! But balance different due to the weight of the big rod. For instance, my 1969 440 crank is Crankshaft Casting Number 2206160, forged steel, internal balance. Only AFTER 69 1/2 when the first generation came out did they use external balance. i can't find a balancer for racing that is externally balanced. For external balance 440 cast crank applications, just leave the weight on. Can the exernally balanced crank be internally balanced,YES,but it comes down to being cost effective and replacing the dammpener and the flex plate and the mallory metal,big bucks. Part Number: SUM-163383 3. It says cast 440 on it. 030 over, the crank look counter drilled in the pics. Externally balanced crankshafts can be internally balanced by adding a heavy metal called Mallory metal to the crank throws. It all needs to be balanced together. Pictured is a 1986-1997 Chevy 153 Tooth Flexplate with the external balance weight highlighted. Apr 4, 2020 · I have a 73 340 (January 73 build date), it looks like it is internally balanced as it has a thin, internally balanced harmonic balancer, the crank is cast with a windage tray), the pistons are forged TRW . vrbw zfzb siuh nbin sqp svwair fvyix tnvgba eshb akopa