Dynamometer Results & Comparisons - Dynoed AFR Heads VRX2 Ported Fast 92mm

Wanted to try a mix match setup.. Mods in Sig, plus using Pacesetter 1 3/4 headers, steel flywheel and high flow carsound cats that are 3 yrs old. 85 degrees and 95% humidity. I know yes with kooks or QTP headers and/or an open cutout and a LW flywheel and 85mm MAF it will be more. Although I am using a ported smooth out stock maf.
Of course I wanna thank vengence racing and AFR for there products but wanna give a special thanks to RevXtreme in Fla for Helping me with my build. Thanks again Tracy and Matt.
Would also like to add that this car runs like a raped ape past 3500 rpms.

Wanted to try a mix match setup. I am sure I could have gotten a lil more but I am fine with it. Mods in Sig plus using Pacesetter 1 3/4 headers steel flywheel and 85 degrees and 95% humidity.
Of course I wanna thank vengence racing and AFR for there products but wanna give a special thanks to RevXtreme in Fla for Helping me with my build. Thanks again Tracy and Matt.
Would also like to add that this car runs like a raped ape past 3500 rpms.

Looks like a little tweak in the WOT fuel tables from 4800-5500 is all that is needed. And it is still pulling above 6K...run it up to 6400 and see where it drops off. :thumb:

The above graph is 2nd pull and the third pull is here:

You positive that's a VRX2 you put in there?

You positive that's a VRX2 you put in there?

Yea ask Ron at Vengence I bought it about 2 months ago. I sure hope so he sent it to me??

Here is my best run using Standard Does it look Better?

Nice looking setup. Don't waste the money on the bigger MAF. Instead, have the cats cut off (almost free mod) and spend some money on the exhaust. PM me if you want the name of a good exhaust guy in WPB.

Lovin that nice flat torque curve:)

Great job guys!

Looks good. What are the VRX2 specs? Also how much timing are you running? Stock GM headgasket or a thinner cometic?

Looks good. What are the VRX2 specs? Also how much timing are you running? Stock GM headgasket or a thinner cometic?

224/228/114 running 27* timing using gm mls gaskets .052 thickness..

That is one flat ass TQ curve. Nice resulsts.

thanks

nice power, lets us know what it does at the track. lol I still need to get to the track and see if I was just on a happy dyno.

My setup is close to yours. I went with the X2 but on a 112. Is your TA a M6.

That's a lot of dough spent for 427rwhp but the TQ curve is beautiful.

My setup is close to yours. I went with the X2 but on a 112. Is your TA a M6.

Yea it is a M6. How much more power would I get if I massaged the runners and a bigger cam in the 230's

Are you running an UD pulley? I don't think the numbers are horrible as I have seen similar setups pull different numbers on different dyno's. If I remember correctly, you previously had a different cam/rocker setup and then made this change. What were the changes and can you show one dyno vs. the new setup?

Are you running an UD pulley? I don't think the numbers are horrible as I have seen similar setups pull different numbers on different dyno's. If I remember correctly, you previously had a different cam/rocker setup and then made this change. What were the changes and can you show one dyno vs. the new setup?

Hi vette nuts yes I am running an UD pulley the link here was with LS6 intake and 205 heads with a cam of 222/228/115 and crane vinci 1.8 roller rockers.

http://www.ls1tech.com/forums/dynamometer-results-comparisons/1152568-dynoed-h-c-afrs-i-wanted-more-though.html

So the changes were new cam of slightly more duration, drop from Crane 1.8 to YT 1.7 rockers and a FAST for the new setup?

I would talk to Tony Mamo but I think you need to look at the exhaust side of the setup. See what Tony thinks. I think the cam it performing good because of the nice flat curve you have and it certainly carries well to the higher RPM.

So the changes were new cam of slightly more duration, drop from Crane 1.8 to YT 1.7 rockers and a FAST for the new setup?

I would talk to Tony Mamo but I think you need to look at the exhaust side of the setup. See what Tony thinks. I think the cam it performing good because of the nice flat curve you have and it certainly carries well to the higher RPM.

Hi Yes that is correct ^ vette nuts you mean then to go catless and maybe use a cutout. I know I would probably pick up more right?

Hi Yes that is correct ^ vette nuts you mean then to go catless and maybe use a cutout. I know I would probably pick up more right?

I would consult with Tony. I think your cam is a good all around power under the curve street cam. I am wondering if exhaust improvements will net you more power. Not familiar with f-body headers so someone who is can better answer if you will net any more power with a better exhaust.

Does anyone know would I gain more power switching from pacesetter headers to something like QTP or Kooks it is worth it or marginal gains. Thanks

Found this: Link (http://www.ls1tech.com/forums/8844205-post15.html)

It appears that headers may help, question is which set. Do a search in external and there is alot of reading :D

Can anyone else chim in. Is my exhaust hurting my dyno numbers using the pacesetters and TSP catted Y pipe. How much more would I gain if I went with QTP headers and there catted Y?

Can anyone else chim in. Is my exhaust hurting my dyno numbers using the pacesetters and TSP catted Y pipe. How much more would I gain if I went with QTP headers and there catted Y?

If you are going to switch headers, go with ARH.

If you are going to switch you might as well get the best and just get the kooks. I have them and love them. Fit perfectly and I would get an off road y if I were you. good luck man

What size cam would I need to optimize my package. It is a daily driver car?

That definitely looks like alot of money spent for the gains, but maybe that's just me.

So what do you guys think of my setup?? Dyno numbers

Nice numbers looks good.

I say switch to texas speed longtubes and switch to the VRx4 or VRx5 cam

I have a new camshaft very similar in duration & a set of PRC 215 heads that I think would work very well for you. I have a customer wanting a set of AFR 205s, if you want to do some trading shoot me a pm.

Go to Pat G and get him to spec you a cam. I'd say 233/237 .603/.609 111+3 LSA would give you 450 with the same set-up you have now. I'd look into ARH headers and ARH ORY. They use a very high quality merge and I'd add a cut-out also in the I-pipe. I'd do 1 7/8 headers to a 3.5 collector after the merge and 3.5" cut-out and after the I-pipe I'd reduce it to 3" corsa/mufflex/magnaflow type exhaust. With all those mods I think you could defineately see 470rwhp, and add a ported fast 92/92 and the magical 500 number comes to mind, or at least very close...

Go to Pat G and get him to spec you a cam. I'd say 233/237 .603/.609 111+3 LSA would give you 450 with the same set-up you have now. I'd look into ARH headers and ARH ORY. They use a very high quality merge and I'd add a cut-out also in the I-pipe. I'd do 1 7/8 headers to a 3.5 collector after the merge and 3.5" cut-out and after the I-pipe I'd reduce it to 3" corsa/mufflex/magnaflow type exhaust. With all those mods I think you could defineately see 470rwhp, and add a ported fast 92/92 and the magical 500 number comes to mind, or at least very close...

He's already got a ported 92/92 so I doubt changing to that cam and better exhaust will get him to 500.

So the cam in the 230 range should net me more about 450rwhp right?

Now I have a 224/228 with regular AFR heads milled to 62cc. Goin to a 232 I think should bring me to 450. Also I wouldlike to add that the car drives awsome Despite any dyno numbers The car is totally transformed.

That's what I would think. Whenever I get a chance I'll be headed back to the dyno to see what the extra timing (up to 26 deg as of now) plus the ported 90/90 nets me. I'm expecting around 460RWHP/410RWTQ SAE with a 232/237 cam. With an LS6 intake, ported TB, 24 deg timing I was 445/402 STD. It also seemed like it might have been knocking a little on the dyno too based on my graph down low. Since then I also added a catch can that's definitely doing it's job. The slight oil consumption through the intake may have been causing a little bit of detonation too but can't be for sure. I just know that my tuner only did 24 deg initially due to some KR and after the catch can and 90/90 it wasn't knocking at all so we upped it to 26 deg.

Now I have a 224/228 with regular AFR heads milled to 62cc. Goin to a 232 I think should bring me to 450. Also I would like to add that the car drives awsome Despite any dyno numbers The car is totally transformed.

Isn't this the important part? I see recommendations on new cams, new heads, new everything. Careful that a larger cam doesn't require fly-cutting unless you are willing to take that on. I still recommend you contact Tony and get his input, after all he knows those heads better then anyone on this forum. You have a stellar set of heads and a great street cam. If you want big numbers, then trade-offs will be made in getting them. You are obviously happy with the performance of the car but not the "numbers". The real question is can you build on your current setup without throwing the baby out with the bathwater.

Isn't this the important part? I see recommendations on new cams, new heads, new everything. Careful that a larger cam doesn't require fly-cutting unless you are willing to take that on. I still recommend you contact Tony and get his input, after all he knows those heads better then anyone on this forum. You have a stellar set of heads and a great street cam. If you want big numbers, then trade-offs will be made in getting them. You are obviously happy with the performance of the car but not the "numbers". The real question is can you build on your current setup without throwing the baby out with the bathwater.

very good advice. I spent alot of money on this set up and got alot of opinions and the deciding factor. I am goin to leave everything the way it is now, but maybe a year down the road I want to add more cam maybe a 228 or 232. Yes, I would Like to get that 450+rwhp for braging rights. But I am Happy now. Now if the runners recieved massaging would that take me north towards 500rwhp with a bigger cam and still be streetable?

very good advice. I spent alot of money on this set up and got alot of opinions and the deciding factor. I am goin to leave everything the way it is now, but maybe a year down the road I want to add more cam maybe a 228 or 232. Yes, I would Like to get that 450+rwhp for braging rights. But I am Happy now. Now if the runners recieved massaging would that take me north towards 500rwhp with a bigger cam and still be streetable?
I say take it to the track and see what it runs. Dyno numbers aren't everything, they're only bragging rights. The track will tell you what the car can really do, but if your not a drag racer, results will take some practice. There may be some more power in there, just do some really good research and you should be able to find it without going crazy swapping parts. Good luck with it!

So the cam in the 230 range should net me more about 450rwhp right?

Now I have a 224/228 with regular AFR heads milled to 62cc. Goin to a 232 I think should bring me to 450. Also I wouldlike to add that the car drives awsome Despite any dyno numbers The car is totally transformed.

I have the same setup as you. Except I went with TFS heads. I might have gotten better number if I had ARH or Kooks headers. Instead of these old style SLP headers. They have performed well for me however a true long tube would have helped out the upper RPM numbers.
Do you still have your cats on? I know you have a tried at true street setup. AFR are one of the best heads on the market and with that cam you could see more power. I would think if your heads were milled to 60cc for more compression. That would have gotten you real close to 450rwhp.

I have the same setup as you. Except I went with TFS heads. I might have gotten better number if I had ARH or Kooks headers. Instead of these old style SLP headers. They have performed well for me however a true long tube would have helped out the upper RPM numbers.
Do you still have your cats on? I know you have a tried at true street setup. AFR are one of the best heads on the market and with that cam you could see more power. I would think if your heads were milled to 60cc for more compression. That would have gotten you real close to 450rwhp.

Yea I still have the cats on.

Yea I still have the cats on.

You need to uncork that exhaust. Axe the cats and put a cutout on each side before the merge. That should cost under $200. Less back pressure will also help you tolerate more timing. It's a double wammy and it's cheap.

Okay numbers but for the money its lacking. Your exhaust is holding you back without a doubt. Cam could have been a little bigger and I also think you could have had the heads milled more.