It's a good performing and looking TB. 
Help me decide which ported TB
Honestly I dont think you will go wrong with the Janzter, Silver Ghost or Damian's. We offer a free bypass kit with the Jantzer but you will be happy with the quality of any of the 3 or the RevX.
usually about 4-8 hp and a noticeable gain in throttle response
usually about 4-8 hp and a noticeable gain in throttle response
I was impressed by the Shaner one that Kicks sent me to powder coat. Port work was like mine, but the epoxy work was done in a neat fashion, caught my attention.
I have had to fix several TB's for people that tried to do it themselves with a dremel, I'll leave it at that. I know its a common argument on here but I'll never agree that's a good way to port a TB for several reasons.
I have had to fix several TB's for people that tried to do it themselves with a dremel, I'll leave it at that. I know its a common argument on here but I'll never agree that's a good way to port a TB for several reasons.
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The key to the RevX CNC'd is the pattern. If you look straight into a 75mm tb you will see the bore is off-set. The straight through side allows the air charge to enter at a good velocity but the slopped side launches the flow at an angle and the resulting turbulence causes a "jumbled up mess" as the flow exits. We have all been dealing with this since the LS1 came out in 97, and the hand porting has worked well in improving low-end power & throttle response....but we have never been able to get more top end out of it. Some times we would see 2-3 more, but that is within the margin of error between dyno runs. This shows real gains and the testing was done in our Tampa facility where we had our dyno enclosed & climate controlled for more accurate testing. The CNC'd pattern is an aggressive cut on the straight through side graduating down to a smoother patteren on the sloped side and it all has a slight swirl to blend the flow. Put one on a wet-flow bench and you can see the difference. The result is the good improvment in throttle response off idle & low rpm's, and finally some measurable power on the top end. 4-8 rwhp is what we see. So the CNC'd probably won't show much better throttle response tan a good hand ported one, but overall power 4-8 is a pretty good bang for the buck....and some tuners are claiming higher after tweaking the tune.
This took app. 2 years of different patterens designed & cut and then dyno tested on a bone stock F-body before ending up with the designed that performed the best.
We have hundreds of them out there now & the results are all pretty consistant. We also have a WD program for any of the other vendors on the site.
This took app. 2 years of different patterens designed & cut and then dyno tested on a bone stock F-body before ending up with the designed that performed the best.
We have hundreds of them out there now & the results are all pretty consistant. We also have a WD program for any of the other vendors on the site.
Agreed on the gains that can be had. I have a wide veriety of dynosheets here with the last being the most odd, huge gains in the middle though....for some reason just off a TB swap lol.
Oopsorry Bo, sorry forgot to add in the venerable Bo white Tb as well!
Bo was one of the first as I remember on this site to offer them and porting heads at really good pricing. Do not over look Bo White either !
Bo was one of the first as I remember on this site to offer them and porting heads at really good pricing. Do not over look Bo White either !
^ if that's from powderpro, that's probably my throttle body,, lol sean really does do excellent work, i haven't had experience with anyone else but sean is a great person to deal with..
TECH Enthusiast
Joined: Sep 2006
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From: Burkesville,Kentucky
I'm needing a p/p throttle body aswell and cant decide which to go with. I need to make my mind up though cause i got an ls6 intake on the way. The cnc'd one is to much coin for me cause i'll probably go with a 92/92 set when i do h/c. Does the knife edged blade help much? I've heard it can cause idle problems.
I'm needing a p/p throttle body aswell and cant decide which to go with. I need to make my mind up though cause i got an ls6 intake on the way. The cnc'd one is to much coin for me cause i'll probably go with a 92/92 set when i do h/c. Does the knife edged blade help much? I've heard it can cause idle problems.
We don't knife edge the blades for that reason & no noticeable gains.
The price of the CNC ported is only $129 plus core, and since releasing the CNC'd version (which does give definate gains) we don't do the hand ported ones anymore due to the time involved & the gains the CNC'd produce.
Either choice, hand ported or CNC'd should give good throttle response improvement, but the CNC pattern results in 6-8 rwhp (or more) on top of it.
Pretty low cost per HP ratio.
