[quote]I'd go with an ST3500 or PI3200 rpm stall. Both have good street mannors and will really knock some time off your ET<hr></blockquote>

Damn! I agree with Terry Burger! Someone slap me.....wait, someone just slap Terry instead <img src="gr_images/icons/wink.gif" border="0">

With your 3400 lb raceweight, either of those converters should work sweet! Maybe some low 1.6 60' times coming soon.

Doubt cutouts will work much, you seem to have a nice exhaust setup. Are the catalytics removed already? That would probably be worth a tenth if not.

And yes, some guys are putting HAL adjustable shocks on their C5s. All you need are the front ones for your car, should greatly assist your weight transfer. Mine should be on the way <img src="gr_grin.gif" border="0">

Tony <img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />

[ March 05, 2002: Message edited by: Nine Ball ]</p>

 

OK - I'm going with the HAL's in front and see how that goes. The cutouts will be just for fun.

That leaves the converter question. I am considering one of the following three:

Vig 3200
Vig 3600
ST 3500

Terry, Trevor and Tony: which of the three would you recommend? Again, I can't thank you enough. I am trying to get this right and don't have a lot of money to keep on experimenting with converter swaps. I did call the guys at P.I. and they leaned more towards the 2800 but I am more convinced that I should go with a higher stall.

Any and all input is welcome. You guys have been great and I am grateful that everyone has been so helpful in assisting me in narrowing down the choices! <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />

gary

 

First of all great numbers. A friend of mine has the same heads, cam, and lifters. You can see his car in last months issue of super rod magazine (silver 98 camaro). One thing that really made an improvement in his was the computer tuning. That set up loves to rev! He bumped his rev limiter up to 7200 and also bumped the timing a little. The difference was like night and day. He is running a yank 4400 nitrous converter. Man that thing leaves hard. You probably don't want to go that high but it is an awesome converter. He is running a yank t/350 also. With your package it will benefit from a higher stall. This is also the heads and cam that are going on my car. It just sounds and performs awesome. I will try to post my numbers also. (On & Off the bottle) Good luck....hope this helps some.

 

Oh....whatever conveter you go with post some numbers (dyno and track) after. I am trying to decide which converter also. Thanks

 

Well it appears that i am the one that needs slapped. I thought you had the mms 229 cam. Maybe my nitrous line is leaking into the interior of my car or something. Forget everything I said. (except for the good numbers) I still think you would love the 3600 stall though. I'm gonna go and bang my head on the wall.

 

Juiced you say that he probably wouldnt want to go as high as the Yank 4400 yet in the same breath recommend a PI3600. Yet the PI converter REALLY stalls to 4300. What gives?

 

Juice and John - keep it coming!

Also, apologies, meant to say Super Yank 3500 (not ST3500). Got that old age thing goin'!

Because of everyone's feedback, I am now leaning more towards the SY 3500 because I think that I will be loving too much on the table with a lower stall than that. I am afraid of going much bigger because of concerns about streetability.

Again, I am very grateful for everyone's posts. Since you are all experts, and the experts don't always agree, it actually is taking some pressure off to find the PERFECT converter. Having said that, I know you guys are definitely helping me to go in the right direction. <img src="gr_stretch.gif" border="0">

gary

 

I am planning to do this around the end of the month (when I can afford it!) and will definitely post before and after times.

Juice - yes, tuning makes all the difference - I am fortunate that MMS is just a few miles from my home.

gary

 

If you spend any time at all on the corvette forum, you will find that the Yank C5 Super Yank 3500 is far and away the most popular converter for heads/cam Vettes. The C5 is very finicky about codes (throttle by wire and tighter slip codes in pcm), thus making the larger diameter Super Yank the highest performing, most trouble-free choice.

Converter swaps in C5s are very time consuming and expensive. You can't compare what work in an F-body and expect it to hold true in a C5. They're more different than you'd think. Most C5 owners don't bolt up ET Streets and most like racing from a fast roll. In these areas, the C5 Super Yank 3500 is unmatched.

 

Raughammer--

I told you my nitrous line was leaking! The 4400 seems to run up higher than 4400 also. After riding in my friends car I would have to recommend the 4400. He had the 3600 before he put in the 4400.

 

As always, great information from everyone!

I had yet another senior moment though. I have narrowed the choices to the following:

Yank ST 3500 or
Yank SY 3500.

Pros and cons?

This is my daily driver AND I take it to the strip at least twice a month. I also run 26 x 11.5 x 16 ET Streets in the back and skinnies in the front.

gary

 

If you run ET Streets and go to the track as much as you say, then go with the ST3500. It's at least a tenth better than the Super Yank 3500 and will be nearly as efficient on the big end of the track. Most C5 racers don't run ET Streets, hence the popularity of the SY3500.

The only downside of the ST3500 is that it will make your car more on the ragged edge of the stock pcm slip codes. A Vig 3200, with its 3800 stall speed would only be worse in this regard. The SY3500 is a larger 258mm converter vs. a 245mm converter in the ST3500. Both converters are excellent, but after trying 10 converters in LS1 powered vehicles, my 11th one is my favorite...the Yank Super Thruster 3500 (ST3500). Does that tell you enough?

 

Patrick et. al.

Yes - that is enough info! <img src="gr_grin.gif" border="0">

I am going with the ST3500.

There are no perfect choices here but you guys got me as close to the perfect converter as I think I can find with my current set-up.

Pros and cons for all the possible range of excellent choices you guys recommended was great. Truly, there wasn't one bad recommendation in the bunch that wouldn't have helped me improve my e.t.'s while considering streetability. I learned much - including that I have lots more to learn. One of the things that I really like about this list is the depth of knowledge and experience that all of you are willing to so freely share.

Hopefully, as I gain more knowledge and seat-time, I will be able to pass on some of what I am learning to others.

As always, I am very grateful for everyone's help. When I was racing 33 years ago, we didn't have access to the depth and breadth of knowledge that exists today. I remain your humble student!
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" /> to all of you!

gary