Please help with converter/ trans brake question

[m6z]

I am needing advise on my car. The guy I bought the car told me to bump the stall up to 3600. I have ran the car once and here are the results. I couldn't get the car to build more than 1 to 2 psi boost before it would push through the brakes. (all runs @ 20psi with 110 race gas) 10.5-11.0 on the wideband.

2.03 60ft. 90.76 1/8mi. 12.54 1/4mi @114.65
2.10 60ft. 90.82 1/8mi. 12.65 1/4mi @111.08
2.93 60ft. 91.50 1/8mi. 13.57 1/4mi @116.94

So my questions are should I bump the converter to a 3600 or should I just leave the converter the same and put a trans brake in it? The trans brake would enable me to leave at 3600 rpms wouldn't it? Thanks for any help and heres the info on my combo.

450rwhp @20psi boost.

Rebuilt engine with TRW .030 over pistons, head studs, main studs, billet center main caps, balanced. Ported stock heads and intake manifold. 62mm throttle body. Crane 214/210 hydraulic roller cam.

PT63 turbo, CAS V2 front mount.

Dual 340 intank fuel pumps, hotwire kit, 50lb injectors, accufab regulator, lubrant 100 octane chip.

Jimmys stage 2 transmission, precision 2800 converter, trans cooler with braided lines and a/n fittings.

Terry houston downpipe with cutout open

 

[brian]

You are going to need more stall, either with or without the brake. With a 63 turbo you are asking alot of the converter you have. 3600 IMO is a touch high, epecially with a brake.
I would look more at 3200-3400 (not a Vig 6 pump). If you restall the Vig, you will hate it.
Your state of tune, and fuel pressure will help/can the car launch better as well.

HTH...Brian

 

[Sweet6]

Definitely need more stall. I have a 63E with a 3500 Vigilante. Spools great. Jimmy said my car spooled faster than his stocker. :biggrin:

I know a guy with a 63E too, he has a 3200 Vig and thinks it spools kind of slow. I wanted to try an Art Carr Non lock 0 pump.(3200-3400) But I could not do it under the circumstances I was in at the time of my last rebuild. Or get a 3400-3500 Vig.

 

[m6z]

I currently have a single disk lock up Vigilante. So your saying that I shouldn't just have it restalled? Why? What converter should I use? If I go to a trans brake will I want a tighter converter then without?

thanks for all the help,
doug

 

[brian]

Doug,
My experience with the 6 pump Vig on the race track is that it is way to loose for most cars. I have tried two different units to varify this. And they were both way to loose.
Now, on the street, it would feel very responsive, but when brake stalled at the track, it is easliy a 4000 stall converter. With a brake, even higher. The problem is the converter is not built for your car, rather a chosen pump design for many cars. The Vig is a beautiful, and well built piece, the 6 pump does have its place. It is just not at the dragstrip. Your bottom end torque will suffer great losses and blow right through your torque peak.
With the transbrake, your car will leave better on the unit you have. If you play with your fuel on the bottom, your converter may suprise you. But it may still be a touch to tight.
With the brake, you can use a slightly tighter converter than without.
Clear as mud huh...
Brian

 

[wickedtt]

Doug,
My experience with the 6 pump Vig on the race track is that it is way to loose for most cars. I have tried two different units to varify this. And they were both way to loose.
Now, on the street, it would feel very responsive, but when brake stalled at the track, it is easliy a 4000 stall converter. With a brake, even higher. The problem is the converter is not built for your car, rather a chosen pump design for many cars. The Vig is a beautiful, and well built piece, the 6 pump does have its place. It is just not at the dragstrip. Your bottom end torque will suffer great losses and blow right through your torque peak.
With the transbrake, your car will leave better on the unit you have. If you play with your fuel on the bottom, your converter may suprise you. But it may still be a touch to tight.
With the brake, you can use a slightly tighter converter than without.
Clear as mud huh...
Brian

Brian are you sure it was the # 6 not the #7 pump you are Talking about? Doesn't precision Industries make a #7 pump too .
They Make a #0, 6 and 7 what are the stall speeds?

 

[affordablegn]

Brians tranny is great!

Brian,
The tranny I picked up is working great.
Did you get my e-mail???
I also had some stall questions!!!
I know M6Z needs a higher stall.
Like you said probably somewhere around 3200-3400.
I bought an Art Carr 9-inch 3200 stall convertor.
It seems like it doesn't stall until around 4000.
I might have to have mine restalled.
I have a similar setup as M6Z.
I e-mailed some questions for you.
What about better brakes or a trans brake for M6Z?
What about S-10 wheel cylinders and proportioning valve?
I am holding about 10-12 lbs of boost with foot brake!
Just throwing it out there!
Best ET so far is 12.42.
Working on 11's.
Email or give me a call.
Thanks,
Jason
AffordableGn
affsys@skyenet.net

 

[brian]

"Brian are you sure it was the # 6 not the #7 pump you are Talking about? Doesn't precision Industries make a #7 pump too .
They Make a #0, 6 and 7 what are the stall speeds?"

That is the 6 pump I am speaking of. They also have a 4 pump as well.
Never had any luck with the 6.
Brian