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Old 05-06-2005, 03:24 PM
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converter Recommendations - 550+ ft/lbs

Hi Folks,
I have been doing some more work to my '72 Olds with a 455 and TH-400.

I will be installing ported C-heads, a larger cam, 240@.050, .480 lift, and rhoads lifters to make the idle a little bit more mild. Correspondingly, I will be installing a different torque converter.

The stall range I would like would be around 2700-3000 rpm. There is also a plate nitrous system in the works, 150 hp shot. What I would like is a converter that won't frag behind 550+ ft/lbs of torque in a heavy (442 A-body) car.

If you have any suggestions I would appreciate it. I just don't want to buy some random converter from Jegs and have it blow up and take out the trans, which has been suitably modified for the power levels. Please forward any suggestions or personal experience you have with different companies. I have heard some horror stories especially about B&M. I just see lots of companies out there, ATI, Coan, TCI, etc. and don't know which to choose.

Thanks for your suggestions,
Andy

PS If it is inexpensive that is a plus.

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Old 05-06-2005, 08:28 PM
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You do not want to go cheap $ on a converter. think quality first then price. every thing iis a trade off as I am sure you know.

You must know the 455 is a torque monster motor.

With Nitrous use..... anti balloon plates are recommended on the converter

I would suggest you call Hughes Performance M-F , ask for Mark.

1-800-274-7223
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Old 05-08-2005, 12:55 PM
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Thanks for the recommendation

Crosley,
Thanks for the recommendation. I will give them a call soon. I am still in school now (final exams - sucks!) but am looking forward to hauling my ride to the track with a failure-free converter.

Andy

PS The olds 455 really is a torque monster. Makes a great street motor just because of that, even in its 8.5:1 form with smog J heads and stock converter it is a low 14/high 13-sec ride.
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Old 05-08-2005, 02:19 PM
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My GN powered S-10 makes around 550 ft-lbs (at 24# boost) and I'm completely happy with my Precision Industry "Vigilante" 9.5" lockup converter. It remains comletely docile around town, but stalls at 3600 @ 10# boost which makes for a very satisfying launch! If I were to do it over, the only thing I'd do different is to lower the stall a few hundred. The shift light stays on for damn near the whole run!
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Old 05-08-2005, 07:46 PM
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Stall speeds are tricky to hit with a small turbo motor.... when the turbo spools up and turns the small motor into a larger motor( boost!)


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Originally Posted by S10xGN
My GN powered S-10 makes around 550 ft-lbs (at 24# boost) and I'm completely happy with my Precision Industry "Vigilante" 9.5" lockup converter. It remains comletely docile around town, but stalls at 3600 @ 10# boost which makes for a very satisfying launch! If I were to do it over, the only thing I'd do different is to lower the stall a few hundred. The shift light stays on for damn near the whole run!
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