Question on selecting a converter.

[Pancho79]

I have a TH350 behind a Pontiac 400 with a cam that Comp recommends a mild converter to pair with. By "mild" they mean what? 2000 RPM? I also see choices for "sprag" and "spragless" converters and I can't get any info clear enough to help me make a choice. I'm also looking at 3.42 rear gears over my stock 2.73 if that helps.

[camrat68]

What RPM range does Comp list for this cam and what rear tire diameter are you planning to run?

Jim

[HandOverFist]

If you want clear information based on fact contact any convertor manufacturer of your choosing...they will ask you all the pertinent questions and supply you with what you actually need.

[Interceptor5588]

General rule of thumb from the converter people is 300 rpm higher than the bottom of your cam's power range. So, if you have a 2500-5500 rpm rated cam, then 2800 rpm stall. This is a little tough to pick unless you've had it dyno'd. MOST of the cams advertised are rated for the middle engine in the range -- meaning if it says Pontiac 326-455 - 2500-5500 rpm, then you could expect that power range out of a 400. Same cam in a 326 will range from maybe 3000-6000, in a 455 it might make power from 2000-5000.

[Craig@Bowler]

I have a TH350 behind a Pontiac 400 with a cam that Comp recommends a mild converter to pair with. By "mild" they mean what? 2000 RPM? I also see choices for "sprag" and "spragless" converters and I can't get any info clear enough to help me make a choice. I'm also looking at 3.42 rear gears over my stock 2.73 if that helps.

If you need some help getting one just let me know. I have a converter tech sheet I'll send you that will give me all the info we need to get you set up with the correct converter. you can email me [email protected] and I'll shoot you back the tech sheet. Thanks!

[Pancho79]

*Update* Got one chosen. Thank's, Craig, for all the help!