Which Vortec Heads?
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Which Vortec Heads?
Planning on refreshing the 327 next year when I put in the TKO-600. FAUXRS2 is helping me with all the specs for the build process. I had planned on using the stock 291X (2.02) hump heads after some massaging but for the same money as the head work I can get a set of Vortecs that will constantly outflow the hump heads. There are several on the market and I need some input. Schneider did the cam for FAUXRS2. I don't have the cam specs yet but it's got 410 lift with much shorter lobe separation.
Anyway here are some Vortecs.
http://cgi.ebay.com/ebaymotors/NEW-A...spagenameZWDVW
Anyway here are some Vortecs.
http://cgi.ebay.com/ebaymotors/NEW-A...spagenameZWDVW
Racer
Joined: Dec 2003
Posts: 399
Likes: 0
From: Haslet,Texas
I've done a bit of research on the Vortecs, because I am switching to them as well. If you are buying them stock, then what you want to look for is either the 906 or 062 castings. Stock, they are 170cc with 1.94/1.50 valves. Max lift is about .475". If you use them with the stock setup, you'll need self-aligning rockers. The ones you linked have screw-in studs and guideplates, so you would use standard rocker arms. The ones you linked are aluminum, and the stock heads would be cast iron. Also, don't forget you'll need a Vortec intake manifold and center-bolt valve covers.
Team Owner
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Those are aftermarket and not GM vortecs.
They are probably superflowheads or some other thing.
The new GM bowtie vortecs are iron and have 2.00, and 1.55 valves. In either a 170cc or 200cc head.
They are probably superflowheads or some other thing.
The new GM bowtie vortecs are iron and have 2.00, and 1.55 valves. In either a 170cc or 200cc head.
Melting Slicks
Joined: Jan 2004
Posts: 2,672
Likes: 1
From: New Cumberland PA
Originally Posted by Guru_4_hire
Those are aftermarket and not GM vortecs.
I clicked on the Ebay link before reading any of the other posts. GMPP makes cast iron Vortec heads and the aluminum Fast Burn heads. The Ebay seller is not selling either of these. I dislike the fact that the seller does not mention who the manufacture is.
The stock/regular GMPP Vortec heads only use centerbolt valve covers and a Vortec intake is required. From what I gathered, it's not the bolt pattern that makes a vortec intake a necessity but the matching of the runners. You can buy adapters to convert from centerbolt to perimeter style valve covers; however, a new set of valve covers would be cheaper.
The newer style Bowtie Vortec different. Allow for the older type valve covers, higher lift, a thicker deck, and other things. The downside is that they are no longer a 'value' type of head.
Racer
Joined: Dec 2003
Posts: 304
Likes: 0
From: Pasadena Maryland
If you're looking for a good package go to Pace Performance and look at part number PAC-2116. This is a complete package with all gaskets, Self aligning rockers and a Edelbrock Intake for $872.95. When I bought it two years ago it was $795. The heads are GM Casting #
12558060 and are good for a .480 lift cam. I can only speak for myself when I say this kit along with a new cam and true duals (no cat) and Hooker Headers really woke up my engine. They truely do flow very well and will surprise you. In my opinion they are the best bang for your buck.
.http://www.paceperformance.com/index...D&ProdID=73011
12558060 and are good for a .480 lift cam. I can only speak for myself when I say this kit along with a new cam and true duals (no cat) and Hooker Headers really woke up my engine. They truely do flow very well and will surprise you. In my opinion they are the best bang for your buck.
.http://www.paceperformance.com/index...D&ProdID=73011
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Originally Posted by djgrelli
If you're looking for a good package go to Pace Performance and look at part number PAC-2116. This is a complete package with all gaskets, Self aligning rockers and a Edelbrock Intake for $872.95. When I bought it two years ago it was $795. The heads are GM Casting #
12558060 and are good for a .480 lift cam. I can only speak for myself when I say this kit along with a new cam and true duals (no cat) and Hooker Headers really woke up my engine. They truely do flow very well and will surprise you. In my opinion they are the best bang for your buck.
.http://www.paceperformance.com/index...D&ProdID=73011
12558060 and are good for a .480 lift cam. I can only speak for myself when I say this kit along with a new cam and true duals (no cat) and Hooker Headers really woke up my engine. They truely do flow very well and will surprise you. In my opinion they are the best bang for your buck.
.http://www.paceperformance.com/index...D&ProdID=73011
Racer
Joined: Dec 2003
Posts: 304
Likes: 0
From: Pasadena Maryland
Their 1.94's but with the modified combustion chamber and fast burn technology they flow just as good as 2.02's. They say they are 20 to 40 HP gains. I would say they are closer to 40HP. I bought a GM cam with .460 lift to go with them for another $89.00. Topped it off with a 670CFM Holley Street Avenger Carb and I'm proud to say it's a screamer now. A far cry from the 185HP from the factory. Check out my Pics'. I'm now running a Mallory HEI instead of the Accel.
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
looking for a polished vortec style intake such as http://cgi.ebay.com/ebaymotors/SBC-C...QQcmdZViewItem
Instructor
Joined: Feb 2005
Posts: 215
Likes: 1
From: Belton Missouri
Here are the current GM Heads for sale (not necessarly production vehicle heads):
http://www.gmgoodwrench.com/perfpart...on=ep#12464298
Sounds like the new Aluminum Fast Burn Heads are Hot...
Audie
http://www.gmgoodwrench.com/perfpart...on=ep#12464298
Sounds like the new Aluminum Fast Burn Heads are Hot...
Audie
