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Author Topic:   powerglide valve and line size
posted April 09, 2004 07:55 PM
ok i think i may have pinpointed my problems.... the line i am currently running is 3/8 with a 1/2 inch valve... but a 1/2 inch bolt wont fit thru the valve... when you put car in gear it takes off right away... doesn't bleed the pressure off.... had the rearend up in the air... got in it fired it up... dropped into gear and it goes and does it... hold the brake it'll kill the motor.. what are your opinions

posted April 10, 2004 05:53 AM
That sounds like your problem. The same thing happened on my TH 350 with a 1/4" line that I was told was big enough. I replaced it with 1/2" line, fittings, and valve and it works fine. When it's cold, it will take off with the valve open if you rev it up, but it will idle in gear.

posted April 16, 2004 07:51 PM
that was the problem
got half inch line and a new half inch valve
works perfect

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