1st gear problem on 3sd - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70c/10barebone · 12-12-2006, 11:16 AM

I've had this problem for awhile and it's getting worse. Whenever I'm stopped and moving to 1st it's a fight. Usually its easier to force up to reverse then throw it quickly into first, que loud hammer sound. If I go to 1st while still rolling then no problems. The truck is a completly stock 1970. Is this a clutch adjustment problem? What do you all think? Feel free to ask for more info on specifics. It won't happen every time but becoming more frequent.

**truckdude239** · 12-12-2006, 11:28 AM

mine is like that but its not as bad i can get it in once i'm stoped but rolling nope wont go think the trans i put in the truck has somesort of safety in it

1969K10 · 12-12-2006, 12:14 PM

Some of those old 3-speed do NOT have synched 1st gears, and are not designed to go into first unless you're stopped...

Have you checked your synch's to see if they're shot?

12-12-2006, 11:16 AM	#1
70c/10barebone Junior Member Join Date: Oct 2006 Location: Lawrence, KS Posts: 79	1st gear problem on 3sd I've had this problem for awhile and it's getting worse. Whenever I'm stopped and moving to 1st it's a fight. Usually its easier to force up to reverse then throw it quickly into first, que loud hammer sound. If I go to 1st while still rolling then no problems. The truck is a completly stock 1970. Is this a clutch adjustment problem? What do you all think? Feel free to ask for more info on specifics. It won't happen every time but becoming more frequent. __________________ 70 C/10 LWB 250 Last edited by 70c/10barebone; 12-12-2006 at 12:18 PM.

12-12-2006, 11:28 AM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: 1st gear problem on 3sd mine is like that but its not as bad i can get it in once i'm stoped but rolling nope wont go think the trans i put in the truck has somesort of safety in it __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-12-2006, 12:14 PM	#3
1969K10 Senior Member Join Date: Jul 2004 Location: Clarks Hill, Indiana Posts: 733	Re: 1st gear problem on 3sd Some of those old 3-speed do NOT have synched 1st gears, and are not designed to go into first unless you're stopped... Have you checked your synch's to see if they're shot? __________________ 1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12)

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