Mystery motor/cam- wont idle in drive-need to pick a converter somehow - Hot Rod Forum : Hotrodders Bulletin Board
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Old 11-13-2002, 07:28 PM
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Question Mystery motor/cam- wont idle in drive-need to pick a converter somehow

Picked up a little chevy short wide with a homebuilt motor and a "big" cam. don't know any more details than that as far as specs. i timed it and tweeked on the idle mixtures (q-jet) and could only get about 10 inches. it has a rough idle and needs to run around 850-950 (guessing) to idle. once in gear it dies inless you power brake it to get it going. once going it runs like a raped ape. sooooo, i'd like to drop in a higher stall but don't really know where to start. could i hook up a tach and find out where it reall hooks up and kinda guess from there? :p

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Old 11-14-2002, 06:11 AM
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I have always had good luck on warm street engines with the '2000 stall' converters that most manufacturers make. They are just loose enough to allow your type of engine to idle freely but tight enough that they perform well in day-to-day driving.
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Old 11-14-2002, 07:44 AM
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Converter is the ticket, but without cam specs It's gonna be tough picking one. Try calling someone like TCI or B+M they might be able to help.
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Old 11-14-2002, 09:26 AM
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COCHEV; how bad does this engine lope? You might have to bump your idle up a bit to keep it from stalling when engaging a stock stal convertor. Check that idle speed and adjust it and see what happens. I run an 18 to2200 stall when I run a rough idling cam. How big are these tires you are trying to turn? Just curious.
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Old 11-14-2002, 05:22 PM
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i really haven't had time to go through everything on this truck yet. lovely thing about winter up here is it's dark at 5:30

anyways, here is what i do know. turning up the idle does not help. the rear tires are 295x50x15s, i have no idea what the r&p is yet, th350, 12 bolt.

i was leaning towards a 2000-2400 and was hoping someone could tell me the street maners of this converter range- sounds like its doable. the truck is not a daily driver and i plan to build it as a street/strip type rig.

thanks all

jason
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Old 11-14-2002, 06:44 PM
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I was having the same problem with my 72 Cheyenne. I had a 2000-2200 stall converter and changed to a 2800-3000 converter, problem solved.
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