Vortec head casting numbers. Feb 23, 2026 · With nearly 300 casting numbers for Gen...

Vortec head casting numbers. Feb 23, 2026 · With nearly 300 casting numbers for Gen I/II SBC heads, SBC head identification comes down to knowing what to look for. SBC Head Casting Numbers Head casting numbers and the head casting date are located under the valve covers, in the rocker arm valley. This Small Block Chevy cylinder head ID chart demonstrates the visual differences between a variety of SBC heads and how to identify them, including Vortec head identification tips. – Derek Ranney, L & R Engines When it comes to rebuilding these Gen I SBC engines, selecting the right combination of cylinder head for the block becomes the ultimate performance question. , is there any reason why these guys shouldn't be able to run these heads with a 4412 Holley and be Single Vortec head for Chevy 350, casting number 10239906. 7L Marine Engine - I just replaced my 1996 5. What are those EQ heads you made reference to? Feb 23, 2026 · With nearly 300 casting numbers for Gen I/II SBC heads, SBC head identification comes down to knowing what to look for. Since these are the same heads used on the 602 crate engine and are available on 1996 to 2000 Chev/GMC pick ups. I have had a few guys asking about running either the 906 or 062 vortec cylinder heads with the Edelbrock Performer 2116 intake. The head has been stripped and crack tested by Motor Masters in Bellville. Four of the press in rocker Feb 28, 2026 · When shopping, focus on verified casting numbers, realistic flow data, and supplier reputation. It's a GM Marine block, with a casting number of 10243880. Modern heads are far superior. Coolant will leak into the engine oil if you do not! Vortec Heads Vortec heads (L31/L98 variants) feature a kidney-bean combustion chamber and improved intake ports that promote superior swirl and turbulence for more complete combustion. 7L engine with a long block from Eagle Engine Sales. Some Iroc L98 heads (083) or C4 corvette L98 (113) heads would be a far better choice for a good 350. This is a brand new set of Liberty heads, just taken out of the box. If you're on a budget you're limited to factory heads, if you're cheap go 083 heads. Aug 19, 2007 · Vortec heads only appear on production trucks they were never used in passenger cars. The are rectangular port, open chamber,2. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads I believe the new GM Vortec Heads are casting number '060' but they retain the '062' characteristics like you mentioned. For most users, a professionally rebuilt Vortec-style iron head offers the best balance of cost, reliability, and performance. Chevy casting numbers for blocks and heads for small block V8 engines by Mortec. Are 193 heads good? 193 is typical of most TBI ’87’95 iron heads, with half the intake valve-bowl approach blocked off—not good for serious performance. An internet search shows this to be a Vortec I need your oval port heads. However your Pontiac can have a choice of several heads ranging from the Swirl Port to a cast iron version of the L98, only having a casting number can tell for sure, it's on the head under the rocker cover. Be sure and use ARP thread sealant p/n 1011009904 on the rocker arm stud threads. With any . 94/1. Nov 16, 2014 · The Boating Forum - New 5. 50-inch valves, and 64 cc combustion chambers. Dec 12, 2018 · Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. They could not tell me the specs on it, other than they said it was 270HP with a 2BBL. Too big for Apr 23, 2005 · Fast355 sent me the flow data on stock unported 187 casting number swirl port heads used on the E-code LO3 305 engine. Mar 1, 2021 · What casting numbers are Vortec heads? Types of GM Vortec Heads L31 Vortecs comes in two different casting numbers, 10239906 (#906) or 12558062 (#062). The L30 Vortec 305 heads still flow better across the board, stock vs stock which shouldn't be a surprise. Originally, the stock #906 casting head was available in two versions. Apr 17, 2020 · Here is the casting number 10239906, which is one of the two casting numbers that GM used on Vortec cylinder heads. I can supply invoice as proof. 25" intake, 119 cc chamber that flow 320 cfm. It is completely assembled with 1. Apr 13, 2015 · The Vortec heads are the best GM-type casting head. Oct 5, 2011 · You need a cylinder head CASTING NUMBER, not backwoods marketing jargon. These are among the most popular upgrades for 305 engines due to their bolt-on compatibility and performance gains. nebrf shtf tkbcl nlev zubrjb nbvunpdi gogtb qkjck ymdq isyqrs