Greg Good Cylinder Heads
Enthusiast
As the head comes off the CNC machine.
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Gen 3 5 axis CNC heads in production. Pics inside.
- Thread starter Greg Good Cylinder Heads
- Start date
Greg Good Cylinder Heads
Enthusiast
Polished out.
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Greg Good Cylinder Heads
Enthusiast
This is the same port as on Andres Gen 3 car* that makes 643 rwhp and ran 195 at the Texas Mile. The CNC port won't be any better, it will just be easier to get more of them done. We ran 6 sets on this first run and 3 are available.
Gen 4 heads and Gen 2's will be along shortly. (It's been a tough road getting this to come to fruition)
* http://forums.viperclub.org/threads/658100-Texas-Mile-195.0-All-motor
[URL]http://forums.viperclub.org/threads/652307-643whp-606wtq-Greg-Good-Heads-Cam-with-A-amp-C-Tune
[/URL]
Gen 4 heads and Gen 2's will be along shortly. (It's been a tough road getting this to come to fruition)
* http://forums.viperclub.org/threads/658100-Texas-Mile-195.0-All-motor
[URL]http://forums.viperclub.org/threads/652307-643whp-606wtq-Greg-Good-Heads-Cam-with-A-amp-C-Tune
[/URL]
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speedracervr4
Enthusiast
Looks great Greg!!
GTS-R 001
Enthusiast
Congrats Greg!
I still remember the heads you made for me back in 2001,
317 CFM, on a gen 2 head,
YEAH BABY!
GREG GOOD IS THE MAN!
I still remember the heads you made for me back in 2001,
317 CFM, on a gen 2 head,
YEAH BABY!
GREG GOOD IS THE MAN!
JAY
Enthusiast
Looking forward to seeing Gen 4 results , maybe even with a Gen 5 intake .
Greg Good Cylinder Heads
Enthusiast
I spent a LOT of time on a Gen 4 port to make it perfect. It's already digitized.
345s-bspinnin
Enthusiast
Awesome work Greg. Glad to see that my heads/ports were baselined off my heads. I am certain they will perform just as well.
Looking great Greg... Everyone should have Good heads 
99 R/T 10
Enthusiast
Awesome job Greg!!! Looks like I will be sending you another set......................
cubican
Enthusiast
Great news
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ssjcreeper
Viper Owner
I foresee lots more Greg Good heads/cam cars running around real soon.
troublemaker
Enthusiast
What are the chances this could be done to a Gen 2 casting? I know the Gen 3 can be adapted, but I was just curious about having my stock heads done.
Greg Good Cylinder Heads
Enthusiast
After the Gen 4 program is running, which will be in a about a week, the Gen 2 program is next.
The Gen 2 castings have a lot of core shift from one set to another, so....I'm having to do a *safe* port that will not make even a shifted set of heads too thin. That will hurt some flow, but that's the only way we can do it. The way I've been doing the Gen 2's for years now is hand roughing using a sonic checker to not go too thin. An all out hand port won't be safe for all heads. We'll see how it works out.
The Gen 2 castings have a lot of core shift from one set to another, so....I'm having to do a *safe* port that will not make even a shifted set of heads too thin. That will hurt some flow, but that's the only way we can do it. The way I've been doing the Gen 2's for years now is hand roughing using a sonic checker to not go too thin. An all out hand port won't be safe for all heads. We'll see how it works out.
Robert Dyck
Enthusiast
Greg...my car is running super strong and sounding mean as hell with your heads and cam....best thing I ever did 
Super Glad to see this is in the works cause im still few years out on opening my beast up. Can not wait till the day i am able to make the call.
If this partly automated process is able to bring the pricing down on sending in my Gen2's then that would definitely speed up me being able to write the check.
Greg, PM with pricing once you sort out the Gen2.
If this partly automated process is able to bring the pricing down on sending in my Gen2's then that would definitely speed up me being able to write the check.
Greg, PM with pricing once you sort out the Gen2.
JAY
Enthusiast
Yes Good question ! ...lol !
Greg Good Cylinder Heads
Enthusiast
Here the link to a thread where a set of my Gen 4 heads ran a 10.56.
http://forums.viperclub.org/threads/656932-Greg-Good-does-it-again-10.566-135.8-GEN-4
Seen the link Greg just wondering the actual power your heads picked up over stock heads, and any pricing as of yet? Cause just looking at those numbers with multiple mods and DA changes etc doesn't really give a clear pic of how much power was picked up with just the heads. Also were these ported and bigger valves?
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Greg Good Cylinder Heads
Enthusiast
With 3.73 gears, the car made over 620 rwhp. I forget what it made stock. Dyno numbers do not always tell the whole story. Two cars can dyno the same but one can be hands down faster. That's what we're looking for in a "combination".
Those heads have a larger intake valve.
Those heads have a larger intake valve.
Thanks Greg a dyno sheet would be real nice to see so a person could put a cost v.s dollar amount on this. Also what about pricing?
Greg, please keep me updated when your ready to start production with GenII heads, I have been holding off awaiting this opportunity.
I will be running your head/cam package on my "96 with an S/C application (Novi 2500) Thank you!!
I will be running your head/cam package on my "96 with an S/C application (Novi 2500) Thank you!!
troublemaker
Enthusiast
Thanks for the information and clarification. I'm on the fence about porting the 2s, adapting a set of ported 3s or just biting the bullet and do a Gen 4 top end or possibly Strikers. I need to break down cost per Real HP and finally get my ducks in a row. So many variables, so little real information.
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