Best convertor for a stock turbo

[84gnguy]

I am guessing a 12" 2800
Mods are in signature...thanks in advance for your thoughts and opinions.

 

[TurboDave]

Easy answer. The stock D5 converter..... Simply a perfect match for a stock or near stock configuration.

 

[84gnguy]

So something that flashes higher than the D5 won't help the 60 ft?

 

[Nick Micale]

Yes, it should help 60' times.

We use a re-stalled stock D-5 converter at 3000 RPM with stock and 44/49 turbos with great success.

My "garage queen", all stock 1987 T except it has a 3000 stall 10" which launches great even with the stock turbo and crummy tires I was using in 1990, the last time last it was at the track.

The white car in my sig has a 5000 stall, so do not get confused!

 

[84gnguy]

I like the idea of a 3000 stall D5
One of my other cars (BBC powered) has a Continental 3200 10" stall that works awesome and I would love to have something similar in the GN

 

[JP112_89]

The most I "heard" of a restalled D5 is 2200 @ 0psi.

 

[Dusty Bradford]

I like the idea of a 3000 stall D5
One of my other cars (BBC powered) has a Continental 3200 10" stall that works awesome and I would love to have something similar in the GN

A D5 won't stall anywhere near 3000 at 0-1# of boost. It may go 3000 at 5-7psi. When talking 0-1# of boost. A good restalled D5 will go 2200-2300. Stock is about 1600-1800.

 

[KL Mallender]

A stock D5 with stock or slightly larger turbo will stall quite easily to 3000-3300 rpm with 15-20 lbs when a transbrake is used.
With all the upgrades available today for a Blown Buick, it gets confusing real quick. I can still remember just how vicious a stocker could launch with slicks and 15+ lbs, good times, just have the engine restrained well.
Good luck.

Kevin.

 

[turbo nasty]

A D5 rated at 3k is gonna slip like a mofo on the big end. No way around it

 

[84gnguy]

A D5 rated at 3k is gonna slip like a mofo on the big end. No way around it

and that is due to the 12" diameter.
Hard to build an efficient high stall convertor on a 12" core.
I had a 12" 2400 convertor that flashed to 3000 and it had about 9% of slippage
Now I have a 10" 3200 that flashes to 3500 and it has about 4-5% of slippage
These 2 examples are NOT with a turbo Buick....