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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: ralphhemi on January 25, 2012, 06:28:51 pm

Title: How do I idenfi Vortec heads
Post by: ralphhemi on January 25, 2012, 06:28:51 pm

 Hi from ralphhemi  What year and what vehicles have Vortec heads ? Will  they fit my 1957 283 cid.  I have a set of heads that came off a 305 HO Camaro 1982  casting # 14022601

Title: Re: How do I idenfi Vortec heads
Post by: 1980c10 on January 25, 2012, 06:41:52 pm

Do a google search. So much good info out there....If after that you have more questions bring them up here.

Title: Re: How do I idenfi Vortec heads
Post by: fitz on January 25, 2012, 08:12:35 pm

Easy way to check for vortex heads is the intake .manifold bolt patern. The vortecs only use 8 bolts(2 on each corner)

Title: Re: How do I idenfi Vortec heads
Post by: Donut on January 27, 2012, 04:10:37 pm

Casting numbers ending in '062 or 906.
Good reading. (Capt. posted a link in another thread to the SD Vortecs, already reworked and new) http://www.nastyz28.com/forum/showthread.php?t=56505 (http://www.nastyz28.com/forum/showthread.php?t=56505)

Title: Re: How do I idenfi Vortec heads
Post by: yellowk20 on January 27, 2012, 04:16:41 pm

As said above the easiest way is to count the intake bolts 

Vortecs have 4 per side were everything else has 6


There is lots of debate over what casting # is better but for street use it really doesn't matter

Title: Re: How do I idenfi Vortec heads
Post by: timthescarrd on January 27, 2012, 10:50:16 pm

Vortec didn't start till 88, fitting vortec heads on an older block requires swapping the intake as well as the heads, and sometimes shaving the deck to match heights. 

82 camaro heads should fit on your 283 but you need figure out what you want out of the engine.  In 82 there was a lot of concern over emissions, so even the 305 HO engine heads had small valves and large combustion chambers (the opposite of what you typically want for good torque).  I had an 84 Camaro and the heads were the very restrictive on the engine.

Title: Re: How do I idenfi Vortec heads
Post by: yellowk20 on January 27, 2012, 10:58:23 pm

Vortec didn't Start until late 95,

Title: Re: How do I idenfi Vortec heads
Post by: yellowk20 on January 27, 2012, 11:05:06 pm

CenterBolt heads started with advent off 1-piece rear mains and fuel injection around 86-87 ( 87 on the trucks possibly earlier on the cars)

Title: Re: How do I idenfi Vortec heads
Post by: Captkaos on January 30, 2012, 11:28:54 pm

Vortec technology heads started in 1986 on the 4.3L, and the 1987-1995 heads used the same Vortec Technology to create the swirl in the head.  The Vortec Motor came out in 1996 and this is the Vortec heads everyone is talking about in reference to performance.