clutch shaft question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

greenvilledave · 03-14-2005, 12:51 PM

I know this question has already been asked but I need to know how to make the clutch pivot shaft work when I have changed from a 250 three speed to a 350 with the three speed. The 350 does not have the casting or the bolt holes for the pivot ball thanks dave ps pictures would be great

OLDCHEV4X4 · 03-14-2005, 01:39 PM

I ran into this problem one time. The ball screws directly into the block. I had to drill and tap the engine block. Scarry stuff.

greenvilledave · 03-14-2005, 03:23 PM

i don't remember but is there a large enough part of the casting to drill and tap that is accross from the frame point thanks dave

OLDCHEV4X4 · 03-15-2005, 07:29 AM

yes..Its right by the dip stick...if you have a driverside dipstick motor.

greenvilledave · 03-15-2005, 09:34 AM

ok I look at that last night by the way oldchev4x4 thanks for the help there is a casting that is threaded right accross from the frame point. Since I am not going to use the original six cylinder setup ever again can i take apart grind and thread one more thing the clutch shaft seems to be pretty close between these to points. then my son and i started to fit the headers into this area might be a problem thanks dave

OLDCHEV4X4 · 03-15-2005, 01:13 PM

I had to screw the ball in, then install the header , then install the Z bar clutch linkage. The arm on the Z bar would hit on the header when the clutch was pushed in, so i cut it off and welded it on where i needed it. Hope this helps.
I think the ball is different for a V8.

03-14-2005, 12:51 PM	#1
greenvilledave Registered User Join Date: Oct 2004 Posts: 141	clutch shaft question I know this question has already been asked but I need to know how to make the clutch pivot shaft work when I have changed from a 250 three speed to a 350 with the three speed. The 350 does not have the casting or the bolt holes for the pivot ball thanks dave ps pictures would be great

03-14-2005, 01:39 PM	#2
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	I ran into this problem one time. The ball screws directly into the block. I had to drill and tap the engine block. Scarry stuff. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

03-15-2005, 07:29 AM	#4
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	yes..Its right by the dip stick...if you have a driverside dipstick motor. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

03-15-2005, 01:13 PM	#6
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	I had to screw the ball in, then install the header , then install the Z bar clutch linkage. The arm on the Z bar would hit on the header when the clutch was pushed in, so i cut it off and welded it on where i needed it. Hope this helps. I think the ball is different for a V8. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania Last edited by OLDCHEV4X4; 03-15-2005 at 03:46 PM.

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03-14-2005, 03:23 PM	#3
greenvilledave Registered User Join Date: Oct 2004 Posts: 141	i don't remember but is there a large enough part of the casting to drill and tap that is accross from the frame point thanks dave

03-15-2005, 09:34 AM	#5
greenvilledave Registered User Join Date: Oct 2004 Posts: 141	ok I look at that last night by the way oldchev4x4 thanks for the help there is a casting that is threaded right accross from the frame point. Since I am not going to use the original six cylinder setup ever again can i take apart grind and thread one more thing the clutch shaft seems to be pretty close between these to points. then my son and i started to fit the headers into this area might be a problem thanks dave



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