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04-08-2011, 01:24 PM
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#1 |
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BLACK SATIN
 
Join Date: Jan 2009
Location: canton, IL
Posts: 266
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replacing 250ci w/305V8; clutch linkage mod?
We are running into a problem with mounting the clutch linkage pivot bracket on the small block on my 67 3/4 ton. It seems like there is enough room around the headers to do something, but how should we mount it? Any ideas would be appreciated. We are thinking about changing it to a hydraulic system.
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67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci Last edited by ges55; 04-08-2011 at 01:30 PM. |
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04-08-2011, 07:10 PM
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#2 |
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'Burban Legend
Join Date: Apr 2005
Location: Mingo Junction OH
Posts: 918
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Re: replacing 250ci w/305V8; clutch linkage mod?
There are two holes on the side of the block that are where you would mount the pivot ball in a car application that you mount a bridge plate to, to make the pivot directly across from the frame bracket, then you need a small block z-bar. The 6 cylinder stuff will not work with a v-8. 6, sbc, and bbc are all different.
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'67 Chevy Iron City Beer Truck (9ft step) '67 Chevy Panel Truck 467 '68 Short Fleet 305v6 '68 McLaren Ramp Truck '68/'68/'70/'71 Burbs 292/366/402/454 '69 C-30 dump '71 C-50 dump and church bus '71 4x4 454 '72 Blazer (w/pop-up camper) $15 x-hooks '66 Chevy II 194/Weber '68 El Camino" 305v6 '69 Skylark 455 Buick '70 Chevelle 427 '71 Cutlass W-31 '71 GTO 400 2x2 "The 51" Chopped '51 Chevy (409) my first car OK Toad, we'll take 'em all... John Milner |
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04-21-2011, 11:22 AM
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#3 |
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BLACK SATIN
Join Date: Jan 2009
Location: canton, IL
Posts: 266
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Re: replacing 250ci w/305V8; clutch linkage mod?
My problem is that there is only one hole on the 85 305 block. I think the 85s had hydraulic clutches?
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67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci |
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04-21-2011, 11:36 AM
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#4 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: replacing 250ci w/305V8; clutch linkage mod?
Are you using 6 cyl frame mounts or swap to v8 mounts?
I just started a build thread detailing my 6cyl to v8 swap as well. Posted via Mobile Device
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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04-21-2011, 01:24 PM
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#5 |
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BLACK SATIN
Join Date: Jan 2009
Location: canton, IL
Posts: 266
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Re: replacing 250ci w/305V8; clutch linkage mod?
It bolted right on to the 6 cyl mounts.
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67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci Last edited by ges55; 04-21-2011 at 01:24 PM. |
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04-21-2011, 01:35 PM
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#6 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: replacing 250ci w/305V8; clutch linkage mod?
Yep it will go right in to the 6 cyl mounts
read my 250 3 speed to 350 4 speed swap buikd thread for all the info you need Posted via Mobile Device
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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04-22-2011, 08:44 AM
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#7 |
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BLACK SATIN
Join Date: Jan 2009
Location: canton, IL
Posts: 266
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Re: replacing 250ci w/305V8; clutch linkage mod?
Which z bar bracket did you use on the block?
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67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci |
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04-22-2011, 09:17 AM
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#8 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: replacing 250ci w/305V8; clutch linkage mod?
No bracket on the block, I just used the block side pivot ball for a v8 4wd straight into the block, that may be an issue for you. It threads into a boss near the dipstick tube.
The stick v8 clutch stuff will not work with the motor in the 6cyl mounts. They put the motor about 3" back farther than the stock v8 mounts. I used the stick 6 cyl z bar Posted via Mobile Device
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig Last edited by OJ1988; 04-22-2011 at 09:39 AM. |
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