C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Phase 6 Heads?

Thread Tools
 
Search this Thread
 
Old May 8, 2002 | 08:50 AM
  #1  
ddecart's Avatar
ddecart
Thread Starter
Team Owner
25 Year Member
All Eyes On Me
Photogenic
Top Answer: 1
 
Joined: Aug 1999
Posts: 42,487
Likes: 47
SPARTAN
CI 3-4-5-6-8-9-10 Vet
CI-9 AutoX Winner
CI-3 Go Kart Champ
St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11
Default Phase 6 Heads?

Browsing through the classified ad's here at work and I see an ad for "Small block Phase 6 heads, fresh, new valves $1000"

I'm thinking $1000 seems like a lot for used heads, but then again Phase 6 heads aren't something I'm familiar with.

Hmmm....just found this on Mortec.com
14011049........................Bowtie, aluminum, 55cc chambers,
angle plug, 180cc ports, "Phase 6"
What's a set of heads like this worth? and are they worthless in terms of modern performance?

I'm not necessarily interested in them. I just saw the ad and it wasn't something I was familiar with. (He's also got a ZZ502 cam, eagle 6" h beam rods, dart single plane intake, unilite distributor, and a 7.5" G-body posi axle if anyone is interested).
Reply
Old May 8, 2002 | 04:29 PM
  #2  
ddecart's Avatar
ddecart
Thread Starter
Team Owner
25 Year Member
All Eyes On Me
Photogenic
Top Answer: 1
 
Joined: Aug 1999
Posts: 42,487
Likes: 47
SPARTAN
CI 3-4-5-6-8-9-10 Vet
CI-9 AutoX Winner
CI-3 Go Kart Champ
St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11
Default Re: Phase 6 Heads? (ddecart)

ttt anyone?
Reply
Old May 8, 2002 | 04:50 PM
  #3  
Pete79L82's Avatar
Pete79L82
Drifting
25 Year Member
Active Streak: 30 Days
Liked
Loved
 
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Default Re: Phase 6 Heads? (ddecart)

Phase 6 were aluminum heads that GM used in Nascar before the were allowed to use SB2 stuff. They are a 23 degree head and most were shipped without valve seats so the builder could put in whatever they wanted. They were cast with small runners but had a lot of material in them so they could be opened up when doing the port work. I dont remember the exact number but the intake valve is offset either .040 or .060 to allow for 2.100 intake valve. As an all out race head they were a little short on horsepower compared to something like a Brodix -10. But if you want to use them on the street the would be great as long as they were not open up to far. Say not more than 200cc to 210cc max intake runner.
Reply
Old May 8, 2002 | 07:14 PM
  #4  
ddecart's Avatar
ddecart
Thread Starter
Team Owner
25 Year Member
All Eyes On Me
Photogenic
Top Answer: 1
 
Joined: Aug 1999
Posts: 42,487
Likes: 47
SPARTAN
CI 3-4-5-6-8-9-10 Vet
CI-9 AutoX Winner
CI-3 Go Kart Champ
St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11
Default Re: Phase 6 Heads? (Pete79L82)

Thanks Pete. They look like an alternative that needs some expertise to get ported & setup properly. probably a bit high on the hassle-meter.
Reply

Get notified of new replies

To Phase 6 Heads?





All times are GMT -4. The time now is 02:57 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE