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Have you ever bought an engine from someone and wondered if it was what they said it was? I'll show you where to find the casting numbers to look it up for y...dr_hunt. Members. 2.7k. Posted June 3, 2006. The 509 is the one you want, early model 2 bolt block. The 511 is the 4 bolt block, also desireable, the 817 is the late model 2 bolt block. My understanding from a buddy that worked at the GM foundry for new prototype motors, Joe Rakov, said way back when that the 509 and the 511 is the same mold ...Loaded in 1 ms. There are 2,506 casting numbers in the database.What Is the Biggest Small Block Chevy Engine? The largest mass-produced / production small block Chevy series engine is 400 cubic inches / 6.6 liters. This displacement was manufactured from 1970 - 1981. However, the aftermarket offers small blocks up to 600 cubic inches, with higher cubic inch options typically for race-only applications.150 posts · Joined 2007. #19 · Sep 10, 2007. Crankshaft casting #s. 1967 Z28 302 = 3815822. 1968 Z28 302 = 3923279. 1969 Z28 302 = 3941178. If the crankshaft doesnt have one of these casting numbers then it is NOT a factory 302 crankshaft. If it does have one of these numbers then you should also buy yourself a lotto ticket.The small block Chevy casting numbers will tell you exactly what you have, as externally, it is difficult to tell whether you're looking at a two-bolt 307 small block Chevy or an SBC 350 4-bolt main engine. The 2 bolt vs 4 bolt main 350 is just one of the decisions you'll need to make, and knowing the power level you're building for will ...When it comes to cranking serious torque from the classic Small-Block, it's hard to beat the 383 stroker combination, which uses a long, 3.800-inch stroke with 4.005-inch bores to generate exceptional low-end pulling power and surprising high-rpm horsepower. ... Part Number: 19435451; Engine Type: Chevy Small-Block V8; Displacement (cu. in ...Through the years, small block Chevy heads have been ID'd by the head's different end casting shapes. They don't usually tell the exact details like valve sizes but are useful for telling (at least potentially) a performance head from a non performance head.C3 Tech/Performance - Engine block Identification question 3914660 - I am trying to ID a 327 Engine block # 3914660, pad # 18Z120285, T1127EC. It appears to be 1968 327, 275 or 300 HP. But here is my question. On the back of the block is normally a casting date. It reads CONV1 ? What does that mean?Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. ... Pontiac/Chevy Aluminum Small Rectangle port. 10051128. 454. 90-94. 2.19/1.88. 72cc Bowtie Aluminum Rectangular port 400cc intake. 10052902. 427. Oval Port Open chamber. 10101136. 454. 91-94.Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage.com - Hot Rods - Musclecars - Project Cars - Farm TrucksCasting Numbers / Randy Worner / September 15, 2022. Small/big-block Chevy Engine code stamping numbers include engine ID code, engine VIN, block casting number, and block date code. Read more.The Edelbrock #5089 E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 ...Chevrolet Performance offers Intake Manifolds and Components for your Small-Block engine build or project car. View performance parts today.Production bore spacing of 4.400-inch limits the largest bore size on a small-block Chevy to 4.185-inch. But even at this point, the Dart M 2 blocks guarantee a wall thickness of 0.275-inch. Big-block foundations in either the Pro or Sportsman option deliver a 0.300-inch minimum figure at maximum bore size. The most important wall-thickness is ...Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database. someone else you’d rather not hear from, there are probably a few phoneJust bougt a fixed up 350 with casting nr 3970010 with 4 bolt mains, is this a LM1 or something else, Mikes page says a LM1 with casting number 3970010 os only a 2 bolt main. Could my block be from a Vette?Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.How to decode Chevy Engine Codes and block casting numbers350 engine block codes. I picked up an engine that was rebuilt in 1998. I cleaned it up and found the following numbers on it I would like to decode: 638 is stamped on both sides and the front of the engine. There is also a B220 and 16093638 stamped on the back side by the 5.7 stamp. I know it is a 350 but would like to know anything I may get ...there is a date code which is on the bell housing flange opposite the casting number,, or on the passenger side. say it's D/24/6,,,, that would read as april/24/1976 for an 010 block. the first letter/character (D in this example) is the month,, then day, then year. "A" is month one or jan. "B" is month 2 or feb.Re: engine casting code 4010207. I have found that you can NEVER trust casting numbers to determine if an engine is a 4 bolt main. The only way to tell for sure is to drop the pan and count the bolts on main caps 2-3-4. Or main caps 1-2-3-4-5 if you have one of those bad boy engines. Lol.

Unlock the secrets of your small block Chevy engine with a guide on decoding engine stamping numbers. Learn to identify its history and specifications.11400 posts · Joined 2002. #4 · Aug 29, 2004. Look above the casting numbers and you`ll see "hencho en mexico" meaning made in mexico, this is a target master 4 bolt main block. Honestly, I don`t like these blocks, some have problems out of them and some don`t, some liked to crack while others were just made of poor materials and workmanship.That is the casting number for 57 V-8 engines, both 265 and 283.It was done right: Block was decked, Cylinders are perfect, Crank Balanced, new 30 over TRW Pistons and rods, ARP studs, Full ARP bolt kit, high dollar full pump, worked over power pack heads, etc. etc. However when I pulled the cam it had no brand name on it. It has all the standard casting numbers on the stalk but I know that will not …

Best Answer. I can't give you an exact year based on casting number alone because Chevy used that casting for several years from 1969 through the mid 1970's. It's one of the better (and more ...Mine is Clearly 3731548 lmk thx Larry:gba: That is the casting number for 57 V-8 engines, both 265 and 283. The 265 that year was only available as a two barrel, manual trans application. All other engines were 283. Same casting number, just a slightly smaller bore on the 265.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.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. C/K = TRUCK, X = Nova/Chevy II, Y = Corvette Click her. Possible cause: SMALL-BLOCK VORTEC CYLINDER HEADS 12558060. ... Casting number 10239906 or 1255806.