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Old 02-06-2008, 06:59 PM
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tourqe converter question

I have a 49 ford f-1 pickup and it has the flathead v8 and four speed on the floor shifter. Tranny is starting to go and the motor needs work so i opted to swap it out with a 302 backed with a c4. Its time to get a converter for it and this is my first project and i wanted to know how to figure out what kind of converter is needed for my build. My father in law says a 2100 rpm converter would be good and my freind that i bought the tranny from said it was a 2,500 that came out of it. The tranny is from a 76 ford mavrick. Also been looking online at converters and im confused. Whats the splines and how many and all that stuff. Any help would be great.

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Old 02-06-2008, 09:42 PM
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Converter selection depends on how radical the engine is and the rear gear/tire combo. You need to post some engine build specs and drive train parts for better suggestions.

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Old 02-07-2008, 06:25 PM
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Alright hope some of this helps the motor is stock so i think its around 200 hp or so. The rear end is a 8 in ford. as far as gear ratio you've got me. Pretty much everything is going to be stock. Hope this helps if not let me know and ill try to get more info for you
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Old 02-09-2008, 03:29 AM
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Torque converter

Your post mentions a tourge converter, is this made in France? Here we have torque converters, (just messing with you). Actually if your engine is stock in the Old Ford truck it may be beneficial to use a slightly higher stall converter like about 2000 to 2200 stall. The reason is that if you have the factory drum brakes, it may be easier to hold the vehicle at a stop light with a higher stall. This is very common problem with light cars (T-buckets) and stock converters, or old brakes. The slightly higher stall converter may also allow the engine to idle when in gear with less load. In your case, the old Ford truck is heavy and the increased stall will also aid in allowing the engine to reach the bottom of the torque curve before starting the vehicles forward motion. This will enhance driving rather than detract from it.
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Old 02-09-2008, 09:17 AM
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Stock motor , stock trans .... a stock converter should work well.

Spline count on a C4 is the input shaft. Smaller shaft that rotates at the front of the trans / pump area.

a 1976 C4 trans should have a 26 spline input shaft
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Old 02-09-2008, 05:24 PM
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Alright those seem to be helpful it looks like it will be most likely a 2200 rpm with 26 spline. Any body know what inch round i would need. The 10 or the 11 inch ones or does that not really matter?
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