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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: klaussk on June 16, 2012, 02:28:02 pm
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Alright, I have a 1985 Chevy K10. It had a 305 in it and a 700r4. The truck is four wheel drive. I am on deployment and I am getting all the parts I need to put a rebuilt 406 into the truck and to rebuild the transmission. All I have left on my list is a HD torque converter. But I don't know what the spline count is and I have no way to find out first hand until I get back. But I need the parts by then because I have to get the truck done while I am on leave. Can anyone please help me out here. I am buying a torque converter from monster transmission. Thanks everyone.
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So I read that GM switched in 85 to a 30 spline count on the 700r4. I will do more research and report back.
So from everything I can find in late 84 GM changed the transmissions to a 30 spine count instead of a 27 spline count. Hope this helps and I am sure if any one else has something to offer they will comment.
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the np208 was only mated to the 30 spline 700r4 so x2 on blake
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Thanks guys. I really appreciate the help.