4spd. Linkage?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1970CustomC10350 · 02-26-2009, 11:11 PM

Hello All, I've been working on replacing a dying 327 with a 400 in our 72 3/4 ton. When I was at it I noticed that the clutch lever on the frame seemed to be at a considerable angle, as in not perpendicular to the frame. Is this normal? I haven't found a decent schematic or picture of this yet. The part I'm talking about rides on two ball studs, one mounted on the frame the other on the engine block. This truck has been monkied with quite a bit by previus owners so there really is no way of telling what combination of parts we got. It does have headers so I'm wondering if some tweaking was involved to everything work. It might be perfectly normal too. Does anyone have a decent picture of what factory 4spd. clutch linkage for a small block is supposed to look like? It seemed to be working O.K. before I started but if its not right I want to make it right. What do you guys think? Any help is very appreciated?

dan42 · 02-27-2009, 12:28 AM

Pictures. Pictures. Pictures. You are also going from a small block to a big block.

1970CustomC10350 · 02-27-2009, 11:48 AM

I'm sorry, I'm replacing the small block 327 with a small block 400.

1970CustomC10350 · 02-27-2009, 10:59 PM

Still thinking on this issue. I might have to run out to a bone yard and see if I can find a V-8 4spd. to look at. Are the factory linkage brackets mounted to the frame with rivets or bolts?

airdale94 · 02-28-2009, 12:01 AM

The ball stud on the engine doesn't go in either of the holes on the engine. There is a flat piece of metal that bolts in the holes then the ball stud screws into the plate. It almost looks "homemade" and you could probably fab one pretty easy. The bracket on the frame is riveted. But can be bolted. Make sure if you obtain a donor that you put it on facing the right way or it will bind. 6 cyl. stuff is not interchangeable, except for the frame bracket.

1970CustomC10350 · 02-28-2009, 12:01 PM

Thanks for the reply. Yeah I got the engine bracket except someone welded the ball stud to it instead of bolting it on. When you say, "Make sure if you obtain a donor that you put it on facing the right way or it will bind." are you refering to the bracket on the frame?

02-26-2009, 11:11 PM	#1
1970CustomC10350 Registered User Join Date: Nov 2008 Location: Kansas Posts: 47	4spd. Linkage?? Hello All, I've been working on replacing a dying 327 with a 400 in our 72 3/4 ton. When I was at it I noticed that the clutch lever on the frame seemed to be at a considerable angle, as in not perpendicular to the frame. Is this normal? I haven't found a decent schematic or picture of this yet. The part I'm talking about rides on two ball studs, one mounted on the frame the other on the engine block. This truck has been monkied with quite a bit by previus owners so there really is no way of telling what combination of parts we got. It does have headers so I'm wondering if some tweaking was involved to everything work. It might be perfectly normal too. Does anyone have a decent picture of what factory 4spd. clutch linkage for a small block is supposed to look like? It seemed to be working O.K. before I started but if its not right I want to make it right. What do you guys think? Any help is very appreciated?

02-27-2009, 12:28 AM	#2
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: 4spd. Linkage?? Pictures. Pictures. Pictures. You are also going from a small block to a big block. __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

02-27-2009, 11:48 AM	#3
1970CustomC10350 Registered User Join Date: Nov 2008 Location: Kansas Posts: 47	Re: 4spd. Linkage?? I'm sorry, I'm replacing the small block 327 with a small block 400.

02-27-2009, 10:59 PM	#4
1970CustomC10350 Registered User Join Date: Nov 2008 Location: Kansas Posts: 47	Re: 4spd. Linkage?? Still thinking on this issue. I might have to run out to a bone yard and see if I can find a V-8 4spd. to look at. Are the factory linkage brackets mounted to the frame with rivets or bolts?

02-28-2009, 12:01 AM	#5
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: 4spd. Linkage?? The ball stud on the engine doesn't go in either of the holes on the engine. There is a flat piece of metal that bolts in the holes then the ball stud screws into the plate. It almost looks "homemade" and you could probably fab one pretty easy. The bracket on the frame is riveted. But can be bolted. Make sure if you obtain a donor that you put it on facing the right way or it will bind. 6 cyl. stuff is not interchangeable, except for the frame bracket. Last edited by airdale94; 02-28-2009 at 12:02 AM. Reason: add

02-28-2009, 12:01 PM	#6
1970CustomC10350 Registered User Join Date: Nov 2008 Location: Kansas Posts: 47	Re: 4spd. Linkage?? Thanks for the reply. Yeah I got the engine bracket except someone welded the ball stud to it instead of bolting it on. When you say, "Make sure if you obtain a donor that you put it on facing the right way or it will bind." are you refering to the bracket on the frame?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.