The "010" block was used 1969 - 1980, has a 4" bore and could be either 2-bolt or 4-bolt main. Since the year code is a "7" is was cast in 1977, due to the late date in the year is was headed for a 1978 vehicle with a 350 cu in engine.Tuning / Power Boost. In 1970, the 350's had 9.0 CR with a 64cc head. In 1971 the CR dropped to 8.2 with the same cc. This was accomplished with a "dish" in the piston. This carried over until 1973 when the CR dropped again to 8.0 BUT with a 79cc head. This means that the dish was gone but the large chambers in the head caused a further drop in CR.There are two standard deck height blocks that will accommodate 4.155-inch bores with either 350 or 400-style main bearings. There's also a monster 9.525-inch talldeck version with 350-style mains and 8620 steel main caps. ... Steel, four-bolt main bearing caps are standard and the block offers all the same options as the iron pieces for dual ...If it's just a long block in good shape and you find someone with a need right now for one , $200 bucks maybe , if it's required asap .up here . complete , running 350, 305 smog motors sell for for 700-1200 bucks depending on mileage , options , etc . VANDENPLAS, Dec 18, 2022. SHARE POST #2.Look for the designation '010' on the block. It's on the vertical btwn the bell housing and engine so they will have to be separated to tell. To my knowledge, the "010" …The short answer is NO--the only sure way to know is to pull the pan and look.You can look up the casting numbers,look for oil plugs near the timing chain,guess …h0trod389 said: Points = Free. Hei = 167 Bux. If you have a flat tappet cam original to the engine, you have a 1985-'86 engine, later 4.3L engines came w/roller cams and lifters. 1985 4.3L engines had a 2-piece rear main seal, and perimeter bolt valve covers- like the 200/229 V6's, as well.I have a chev 350 4-bolt 2-pc rear seal, out of a 77 camaro. I'm getting ready to put bearings back in. I have read a few articles on bearing clearances for main & rod bearings. I'm looking for a spec sheet or if anyone knows of a webpage that might have the correct tolerances for main, rod bearing clearances, and rod to rod clearance, torque ...No way to be sure unless you physically confirm it by looking at the mains with your own eyes. That same 010 block was drilled in both 2 and 4 bolt configurations. Cracks can be checked by a process called magnafluxing. Most machine shops will do it for not much money. But you have to buy it first, then test it.CHEVY CASTING NUMBERS. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too.The 350 HO small block crate engine has powered countless project cars since its '67 Camaro debut. Learn more about dyno specs, installation & more. ... A cast-iron block with four-bolt main caps is the foundation for the 350 HO, which is topped with iron Vortec heads fitted with 1.94/1.50-inch valves. Its durable rotating assembly has aluminum ...The threaded square-drive plugs on either side of the cam plug are the oil galley plugs. These allow the oil galleys to be drilled and then sealed. The main oil feed galley is the one on the right. The 318 Magnum block is tipped over to the driver's side so the passenger-side deck is horizontal.Mar 19, 2020 · This How to video will show you how to find or locate the casting numbers on your small block chevy engine block. This will show you how to also look up the ...The Turbo 400 has a very distinct fluid pan. The 400 transmission has a main case of cast-aluminum alloy with a length of 24-3/8-inches long. Its case is essentially smooth. The fluid pan shape is irregular, being likened to distorted Texas state borders. It also uses the same vacuum modulator as the Turbo 350.It was used in various applications with either a four- or two-bolt main cap application. What makes your block special is the other markings. It has the high-performance number as depicted by HI ...Checking the casting number is one of the best ways to identify the crankshaft flange of your small block Chevy. The ID numbers vary from one Chevy truck to another. You can also recognize the flange by inspecting its journal diameter and the type of material it is made of.Today Professor Clint takes on the topic of 2 Bolt vs 4 Bolt mains. Which is better, what are the pros and cons of both, how can I upgrade, what the heck is ...2167 posts · Joined 2016. #2 · Jun 12, 2023. That is a 1 piece Rear Main Seal Block with at least a 4.0 inch bore. It could be anything from a 327 to a 396 depending on what bore and stroke it has now, but ot started life as a late 80s to mid 90s 350. It could be a 2 bolt, or 4 bolt main engine.Jan 13, 2010 · Block casting number would be a good start. 330817 1970-80 400 150-180 2 bolt. 3951509 1970-80 400 only 150-265 2/4 bolt. 3951511 1970-80 400 255/265 2/4 bolt Some replacement blocks had 2-bolt main caps. Also some had 3 freeze plugs instead of the more common 2 but there were also 400's with 2 freeze plugs but the 3 were 400 only.Why do you need a 4 bolt main block? 429/460 blocks are strong engine blocks and unless you are going to be making some ungodly amount of HP you don't need 4 bolt mains. For most Street and race applications 2 bolt mains are more than sufficiant. Randy. if you spell Racecar backwards it is still Racecar..The 400 SBC two bolt is actually more desirable than the 4 bolt block. The bigger main cap (Diameter 2.65 journal crank on 400 compared to 2.45 for a 350) causes the outside bolts on the 4 bolt blocks to actually weaken the block in the main web area making them more susceptible to cracking under high stress.The 1968 block was also used for the 327/210 hp and 350 295 hp SS engines. The blocks used in 1969 featured thicker webbing around the mains and used nodular iron 4 bolt caps. A common misconception is that 1967 and 1968 302's were 4 bolt blocks, while actually the only engine to use 4 bolt main caps was the 1969 version.For help identifying different fastener categories see our Fastener Type Chart. Ex. Wood Screw, Sheet Metal Screw, Hex Bolt, Lag Bolt, etc. Drive Type. Fasteners in some categories are available with different drive types such as Philips or Slotted. In other categories such as lag bolts there is either only one drive type or the drive type is ...Well I don't know about that, "you can tell weather it's a 2 or 4 bolt from outside", but you might try here for information.2167 posts · Joined 2016. #2 · Jun 12, 2023. That is a 1 piece Rear Main Seal Block with at least a 4.0 inch bore. It could be anything from a 327 to a 396 depending on what bore and stroke it has now, but ot started life as a late 80s to mid 90s 350. It could be a 2 bolt, or 4 bolt main engine.how to tell 2 or 4 bolt main? Engine & Drivetrainalot of the early 1 piece seal blocks crack in the lifter valley.mainly from thin castings and stress. later blocks the castings changed to reinforce the valleys. so if you have an early block it is something to check. This is an older thread, you may not receive a response, and could be reviving an old thread.Main Caps: refers to the Chevy engine numbers of bolts holding the main bearing caps in place. It specifies whether the block is a 2-bolt main or a four-bolt main.2167 posts · Joined 2016. #2 · Jun 12, 2023. That is a 1 piece Rear Main Seal Block with at least a 4.0 inch bore. It could be anything from a 327 to a 396 depending on what bore and stroke it has now, but ot started life as a late 80s to mid 90s 350. It could be a 2 bolt, or 4 bolt main engine.Block Identification. Pontiac blocks are easy to identify if you know what to look for. It is simple, for example, to visually categorize all 1959-and-later blocks into 389/400 or non-389/400. All displacements other than 389/400 possess a “transfer lug” (found at the rear of the block shaped like a “mountian” or “pyramid”).There isn't a way to identify a 4 bolt main block without looking inside the oil pan. What is the performance difference between a Chevy 350 4 bolt main and 2 bolt main? None. The four bolt main ...(Except for my boat witch is a MSD 6M-2) I do so to keep my motors from reving past 5000 rpm's. The small block Chevy can go beyond this by far, however reliability will suffer in the long run, especially in a stock shortblock. A 4 bolt and for that matter a 2 bolt main block will handle quite a bit of HP and Torque if it not reved to high.It has the L05 motor, and evidently it has the center bolts on a 72* angle. If I had the right idea on what to search for that would be great. Thanks for the help! Most post-87 non-Vortec manifolds (which you are trying to find) were for TBI, and you want to use a carburetor. One option is to use bolt adapters that allow you to put a 55-86 ...The 1968 block was also used for the 327/210 hp and 350 295 hp SS engines. The blocks used in 1969 featured thicker webbing around the mains and used nodular iron 4 bolt caps. A common misconception is that 1967 and 1968 302's were 4 bolt blocks, while actually the only engine to use 4 bolt main caps was the 1969 version.Aug 31, 2007 · Trucks are more likely to be four bolt than cars in either case. 350 blocks from 79-86 (passanger side dipstick) casting # ending in 207 are all 4 bolt. This is the only for sure four bolt casting I know, earlier 4 bolt 350s were often 010 castings, but these came in two bolt as well.Chevrolet Performance 350 C.I.D. Cast Iron Racing Bowtie Bare Engine Blocks 12480049. Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, 350, Each. Part Number: NAL-12480049. Not Yet Reviewed. Estimated Ship Date: Jul 10, 2024 if ordered today.2167 posts · Joined 2016. #2 · Jun 12, 2023. That is a 1 piece Rear Main Seal Block with at least a 4.0 inch bore. It could be anything from a 327 to a 396 depending on what bore and stroke it has now, but ot started life as a late 80s to mid 90s 350. It could be a 2 bolt, or 4 bolt main engine.Sarah Buhr speaks with Nathan Jauvtis about his company Bolt and the electric motorbikes they manufacture by hand in their San Francisco garage. Sarah Buhr speaks with Nathan Jauvt...CHEVY 350 5.7 V8 64-77 4 Bolt Main Long Block Engine assembly with Tinware. This engine has a 9:1 compression ration and should produce around 300hp depending on accessories and application. This engine includes the. Oil Pan ( with oil pump and pickup installed) Timing Cover. Valve Covers ( painted black in most cases not chrome like the photo)The old and very tired (but still running)350 that I pulled out of my Bomber is one of those 020 010 four bolt main castings, it was originally a truck or van engine from 1978. Hey, maybe the block would be a good foundation for an American Speed style 401 cube 350 stroker motor! -----"Bomber" '67 El Camino, Beater comes back to life.The 350ci small-block would eventually return to greatness, though this redemption was slow to come. One such stepping stone along the 350ci V8’s return to performance superiority was the release of the LT1 in 1992. The 1992 dished out an impressive 300 horsepower, which served as a 50 horsepower increase over the L98 small-block before it.Main Caps: Ductile iron, splayed center 3, 2 bolt front and rear Main Cap Register: Deep stepped register on each side (no need for dowels) ... Press: .005″ Main Cap Bolts: 7/16″ Oil System: Wet sump, main priority oiling (can use dry sump) Oil Pump Shaft: 350 main = stock shaft (.481″ OD), 400 main = stock shaft (425″ OD) MUST machine ...Trying to id engine.350 chevy numbers found - left rear on block 98099001 made in mexico, right front of block- 14956 - Answered by a verified Chevy MechanicFind CHEVROLET 5.7L/350 Main Caps 4-bolt Main Cap Fastener Quantity and get Free Shipping on Orders Over $109 at Summit Racing!Chevy 350 Engine Specs. The Chevy 350 engine is a 350 cubic inch (5.7-liter) small block V8 with a 4.00 and 3.48 inch bore and stroke. Depending on the year, make and model of a car, horsepower ranges from approximately 145 to more than 370. Rated at up to 380 pound-feet of torque, this engine is great for towing; however, fuel economy is low ...Step 1. Look at the rear of the engine block for casting numbers, by where the transmission mounts to the engine. There will be at least one set of numbers on the block. If you need to clean up the block to read the number, use the wire brush in combination with the degreaser.Help finding a 350 roller block. i feel like a real jack *** but im having trouble getting a list of roller block castings. a list of these would help me tremendously on my hunt through craigslist. much thanks for all the help through all my posts fellas. 350cid roller tappet blocks are casting numbers 10243880, 14011148, 14088526, and 14093638.M. misswriter415 Discussion starter. 1 post · Joined 2008. #1 · May 1, 2008. I have a chevy 350 engine with Casting No. 3970010. I was told to get the numbers from the flat panel on the "passenger" side and I did. They are TYF705125 and V1015TMM. I have tried to look these numbers up and I can not find anything.Sometimes you can't get a block with 4 bolt mains though, so a way to make a 2 bolt main block even stronger than a typical 4 bolt block is to use a "main support". This is a brace that bolts across all 5 main caps, thus tying them all together and sort of creating a 10 bolt main engine. The theory behind this is simple, if one main cap tries ...Vortec heads are easily identified, as they only have 4 intake manifold bolts per side that are straight up compared to the older style which used a 6 per side intake mounting that are angled. Real Vortec heads were introduced in 1996. The name "Vortec" gets somewhat confusing, as GM began to use the name in the 80`s, many GM trucks …350 mains (1) 454 mains (1) Part Category Performance Parts (2) PRICE $2000 TO $5000 (3) Items Per Page: Performance Small Block Bare Block. ... 4-bolt Cast Iron Main Caps; Max Stroke 4.250; View Details. $2,218.67 (1) Ships Today FREE Shipping Lowest Price Guarantee. Add To Cart.Look for the casting number: The first step is to locate the casting number, which is usually found on the engine block. The number can be stamped or raised, and it provides valuable information about the engine. Check for the "4m" stamp: The 351 cleveland engines typically feature a "4m" stamp on the engine block. This mark signifies that the engine has a four-bolt main bearing cap ...Why do you need a 4 bolt main block? 429/460 blocks are strong engine blocks and unless you are going to be making some ungodly amount of HP you don't need 4 bolt mains. For most Street and race applications 2 bolt mains are more than sufficiant.This MABBCO® Remanufactured Short Block is for a GM Chevy 5.7 350 motor, model years 1970-1979. This engine is commonly known as an "early model 350" and is identifiable by its 2pc. rear main seal, left hand dipstick, and 4-bolt main. MABBCO® short blocks include NEW pistons, rings, rod bearings, main bearings, cam bearings, and timing set.To start with, the Targetmaster 350, was a GM crate engine. The Targetmaster 350 came out in the late 70's, and was a brand new, made in Mexico, 4 bolt main, 350. I seem to remember the compression ratio was in the 8.0 to 8.5 range. They used the 2 piece rear main seal, the 76cc heads common back then, and the L-48 "929" cam.Jul 11, 2019. #8. All stock blocks are 2 bolt mains. Except..... The '70 T/A - AAR 340 6 pack engines had the thick/filled in areas that could be drilled and tapped for a 4 bolt application. Not all of MP race blocks came with 4 bolt main caps. All of the race blocks could be tapped for 4 bolt main caps.how to tell if you have a 4 bolt main or 2 bolt main sbc 350 - YouTube. Straight piped Chevy productions. 1.73K subscribers. 13K views 2 years ago. ...more. in this video I show …crawl under the car on the drivers side look above the starter there will be a number the last 4 didgets will be for example 340-5 or 360-3 or 318-1 the last number could be from 1 to 9 i hope vthis will make it easier for you.I am going to see a fellow who has a true Z28 block and heads. {So he says}I questioned him if it had just a block number that "could" be used for a 302. To this, he says, it is the real deal. I do not know what else the engine has, …You can convert a two bolt block to four bolts in a machine shop easily enough with a set of used cast iron main caps or a set of aftermarket steel ones. Not so much the machine work for the oil cooler used on Corvettes as that requires special tooling (long dual twist drill bits) most machine shops do not have readily lying around on the shelf.4171 posts · Joined 2007. #8 · Apr 17, 2010. Unless you are looking at making some very serious hp and turning extremely high rpms there is no need for 4-bolt mains or an aftermarket block. Factory 351w blocks can handle 700-800hp. If you are worried about cap walk you can use a main stud girdle for extra insurance.4. Bowtie blocks with splayed 4-bolt mains with center studs should handle over 1,500 HP, and are good to well over 8500 RPM. Also, an article in todaysnhra.com, it stated that "Factory production blocks with 4-bolt main caps can reliably 800 HP. And a 2-bolt main coverted to aftermarket splayed caps are much stronger that factory 4-bolts."Most engines have 5 main caps. 2 bolt main caps are fastened to the block with 2 bolts (one on each side), and a 4 bolt cap is held in with 4 bolts (2 on each side) so there is "about" double the holding force keeping that 4 bolt main cap fastened to the block and keeping the main bearings securely in place as compared to a 2 bolt, which in ...Type your engine block casting number in the SEARCH BOX below. E.g. 14102058. Leave a comment at the end of this post if you cannot find the information you want or check out or post specifically for SBC and BBC engine code stamping numbers. Gen III 6.0L Iron Block. LQ-4 and LQ-9. Gen III 6.0L Iron Block.383 BARE BLOCK (1986 - LATER STYLE), 1-PIECE REAR MAIN SEAL. Cast-iron 4-bolt block. 4.004" bore. Torque plate honed. Clearanced for 3.800" stoker crankshaft. Machined for hydraulic roller or flat tappets.