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Old 12-07-2010, 01:58 PM
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Stall Convertor for Pontiac 400?

I am stall convertor shopping. It's going in a 70 Pontiac LeMans with TH350. The engine has headers, summit 2802 cam, 6X-4 heads milled .040".

I was given the advise below on a stall convertor for my car;

"If you want a bit more off the line and dont want a super loose 3500 stall like the chevy guys have to run, head down to a transmission repair shop and ask them if they can order you a Th400 high stall converter. Its similar to what the L88 Corvettes ran, they are 13" converters with 1900-2200 stall speeds. That converter will work in a Th350 or a Th400 trans so no worries there.

Stay away from the typical B&M converters like the Holeshot, they slip really badly with Pontiac engines."

So what vendors make a stall convertor that meets the above? Once I find out I can head to the trans repair shop.

Thanks,
BT

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Old 12-08-2010, 12:56 PM
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A convertor doesn't care what it is behind brand wise. You also don't want to just pick your stall speed out of mid air. You need to know your combo and the results you expect horsepower wise. If your car isn't going to make gobs of power up high you wouldn't want a high stall convertor.
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Old 12-08-2010, 01:46 PM
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Torque Converter Selection at ChevyHiPerformance.
Alot to read there.
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Old 12-08-2010, 02:08 PM
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A custom made converter for your setup ?
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Old 12-08-2010, 09:04 PM
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[QUOTE=beertracker]I am stall convertor shopping. It's going in a 70 Pontiac LeMans with TH350. The engine has headers, summit 2802 cam, 6X-4 heads milled .040".

I was given the advise below on a stall convertor for my car;

"If you want a bit more off the line and dont want a super loose 3500 stall like the chevy guys have to run, head down to a transmission repair shop and ask them if they can order you a Th400 high stall converter. Its similar to what the L88 Corvettes ran, they are 13" converters with 1900-2200 stall speeds. That converter will work in a Th350 or a Th400 trans so no worries there.

Stay away from the typical B&M converters like the Holeshot, they slip really badly with Pontiac engines."
thanks
BT
quote

/ The 2200 rpm figure looks pretty good as thats where the cam you have starts peaking its power.You will need a looser than stock converter to be able to idle as it has too wide of duration for street use and because the LSA is wide you wont have any power off the line without a stall and some gears.
Does not sound like an optimal cam for the street, IMHO

So what vendors make a stall convertor that meets the above? Once I find out I can head to the trans repair shop.
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