Screw in Pivot ball - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 05-23-2003, 09:40 AM

Does anyone have a pic of this. I know you need one when you switch from an inline to a 350 and I am in the process of doing this. Or do you know a part # for it so i don't get that blank look from the parts guy here

Or is there a donor vehicle I could rob this off of??

**CPNE** · 05-23-2003, 10:53 AM

Actually you are not looking for a screw in pivot ball if you are building a 2wd and are putting the small back in the correct v-8 position. The screw in is for 4x4's. You need one that sits on a flat plate bracket that bolts to the 2 bosses in the engine block designed for the cluch pivot ball. In addition, the bracket for the z-bar on the frame is different from the I6 as is the z-bar and clutch rod. Basically you need the entire setup from clutch to fork off a small block standard truck. Again, the big assumption is correct v8 position and 2wd.

I don't have part #'s but your best bet is to find another member who is parting such a beast.

dubie · 05-23-2003, 11:21 AM

Thanks for the info CPNE

The 350 is going in the I-6 position. I know that crazy longhorn has this same setup and informed me about the screw in type pivot ball. Just wondering if anyone can shed anymore light on this subject.

Rod · 05-23-2003, 11:45 AM

I only had a pic of BB one saved. I believe the SB v8 one is just flat with a similar pivot ball.

crazy longhorn · 05-23-2003, 12:01 PM

I dont have a pic Dubie, but if you look at the 73 up trucks with stick, I think you will find the pivot ball you need(screws into the bell housing). In I6 position, I ran the ball in the foward hole in the block, & shot the Z bar through the # 5 & 7 header tubes. The frame bracket had to be moved to get the z bar perpendicular to the block, & as CPNE mentioned, you need to use all the v8 clutch linkage(2 wd). Very minor mods were needed to set it up(bottom rod lenght, & possibly a slight bend on the top arm on the Z bar). Headman headers (69090) fit set up like this, & I believe the Hooker comps will also......my linkage is set up behind the #7 tube this time, & also has mods to the firewall,a custom top rod(with rod ends), & a different top arm on the Z bar for a straight shot from the peddle to the bell crank. 6 gears are fun

good luck, crazyL

dubie · 05-23-2003, 03:52 PM

Hmm this might take a little jimmy riggin because I am using stock manilfolds. Once I have the engine and tranny back in, I should be able to get a better idea as to what I'm up against.
Thanks guys

Mike C · 05-23-2003, 04:44 PM

I would try a pivot ball and bellcrank for a 4x4. Should be real close to the V8 in 6 cylinder position. LMC has the pivot balls, and I am sure others do as well.

**CPNE** · 05-23-2003, 05:29 PM

Mike C has something there. You'd have to use a straight dump ramhorn though.

crazy longhorn · 05-23-2003, 07:58 PM

Ill 3rd that....I think the 4x4 V8 linkage will work for you. positioning will be different than the 2 wd pcs, so I would try to get all the pcs if you can

crazyL

gr8scott51 · 05-23-2003, 11:16 PM

I have installed this setup in my 68. Using the 4X4 stud and Z bar the linkage lines up perfect. Did not have to relocate the frame mount. I did have to use ram horns - center drop - manifolds on both sides. You can see the pivot balls in the Truck Shop catalog, page 129. www.truckandcarshop.com good luck, Scott

PanelDeland · 05-24-2003, 12:13 PM

Make sure you use a new pivot.I had one break on a 2-3rd shift years ago as I got onto the hiway.It let the Z-bar cotter pin hit the oil filter just enough to put a pinhole in it.Since the guages in that truck were junk I never knew it was leaking oil til it was too late.So make sure you have a good oil pressure guage too.

*Slams_58* · 05-24-2003, 12:33 PM

so what year should i look at robbing this from? will one from a 73-87 work?

crazy longhorn · 05-24-2003, 01:03 PM

73 up on the trucks should work on the pivot ball(anything that didnt have hyd clutch). A lot of the 60s cars had the same screw in pivot ball, it should be 1/2 " 13 NC thread. Good luck, crazyL

Im not sure I answered that properly Mrs dubie..... if you are looking for the 4x4 linkage, i would go for 67-72.....& try to get all the pcs,as you are swapping from a I6 to V8, & the pcs are different. 4wd, I have not been into, So I dont know how the pcs differ (as far as top/ bottom rods). Good luck, crazyL

dubie · 06-06-2003, 02:51 PM

Just my rotten luck, the yard here has never wrecked a 67-72 manual 4x4. I'm gonna post this on the parts board and see if we might have a board member that is selling these parts

05-23-2003, 09:40 AM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Screw in Pivot ball Does anyone have a pic of this. I know you need one when you switch from an inline to a 350 and I am in the process of doing this. Or do you know a part # for it so i don't get that blank look from the parts guy here Or is there a donor vehicle I could rob this off of?? __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

05-23-2003, 10:53 AM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Actually you are not looking for a screw in pivot ball if you are building a 2wd and are putting the small back in the correct v-8 position. The screw in is for 4x4's. You need one that sits on a flat plate bracket that bolts to the 2 bosses in the engine block designed for the cluch pivot ball. In addition, the bracket for the z-bar on the frame is different from the I6 as is the z-bar and clutch rod. Basically you need the entire setup from clutch to fork off a small block standard truck. Again, the big assumption is correct v8 position and 2wd. I don't have part #'s but your best bet is to find another member who is parting such a beast. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

05-23-2003, 11:21 AM	#3
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Thanks for the info CPNE The 350 is going in the I-6 position. I know that crazy longhorn has this same setup and informed me about the screw in type pivot ball. Just wondering if anyone can shed anymore light on this subject. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

05-23-2003, 11:45 AM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	I only had a pic of BB one saved. I believe the SB v8 one is just flat with a similar pivot ball. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

05-23-2003, 12:01 PM	#5
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	I dont have a pic Dubie, but if you look at the 73 up trucks with stick, I think you will find the pivot ball you need(screws into the bell housing). In I6 position, I ran the ball in the foward hole in the block, & shot the Z bar through the # 5 & 7 header tubes. The frame bracket had to be moved to get the z bar perpendicular to the block, & as CPNE mentioned, you need to use all the v8 clutch linkage(2 wd). Very minor mods were needed to set it up(bottom rod lenght, & possibly a slight bend on the top arm on the Z bar). Headman headers (69090) fit set up like this, & I believe the Hooker comps will also......my linkage is set up behind the #7 tube this time, & also has mods to the firewall,a custom top rod(with rod ends), & a different top arm on the Z bar for a straight shot from the peddle to the bell crank. 6 gears are fun good luck, crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

05-23-2003, 03:52 PM	#6
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Hmm this might take a little jimmy riggin because I am using stock manilfolds. Once I have the engine and tranny back in, I should be able to get a better idea as to what I'm up against. Thanks guys __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

05-23-2003, 04:44 PM	#7
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	I would try a pivot ball and bellcrank for a 4x4. Should be real close to the V8 in 6 cylinder position. LMC has the pivot balls, and I am sure others do as well. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

05-23-2003, 05:29 PM	#8
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Mike C has something there. You'd have to use a straight dump ramhorn though. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

05-23-2003, 07:58 PM	#9
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Ill 3rd that....I think the 4x4 V8 linkage will work for you. positioning will be different than the 2 wd pcs, so I would try to get all the pcs if you can crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

05-23-2003, 11:16 PM	#10
gr8scott51 Registered User Join Date: Mar 2003 Location: Bremerton, WA Posts: 1,839	Yup I have installed this setup in my 68. Using the 4X4 stud and Z bar the linkage lines up perfect. Did not have to relocate the frame mount. I did have to use ram horns - center drop - manifolds on both sides. You can see the pivot balls in the Truck Shop catalog, page 129. www.truckandcarshop.com good luck, Scott __________________ Silence is golden, duct tape is silver. - Scott

05-24-2003, 12:13 PM	#11
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Make sure you use a new pivot.I had one break on a 2-3rd shift years ago as I got onto the hiway.It let the Z-bar cotter pin hit the oil filter just enough to put a pinhole in it.Since the guages in that truck were junk I never knew it was leaking oil til it was too late.So make sure you have a good oil pressure guage too. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

05-24-2003, 12:33 PM	#12
Slams_58 Account Suspended Join Date: May 2002 Location: I let ya know as soon as I know Posts: 3,593	so what year should i look at robbing this from? will one from a 73-87 work?

05-24-2003, 01:03 PM	#13
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	73 up on the trucks should work on the pivot ball(anything that didnt have hyd clutch). A lot of the 60s cars had the same screw in pivot ball, it should be 1/2 " 13 NC thread. Good luck, crazyL Im not sure I answered that properly Mrs dubie..... if you are looking for the 4x4 linkage, i would go for 67-72.....& try to get all the pcs,as you are swapping from a I6 to V8, & the pcs are different. 4wd, I have not been into, So I dont know how the pcs differ (as far as top/ bottom rods). Good luck, crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... Last edited by crazy longhorn; 05-24-2003 at 01:23 PM.

06-06-2003, 02:51 PM	#14
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Just my rotten luck, the yard here has never wrecked a 67-72 manual 4x4. I'm gonna post this on the parts board and see if we might have a board member that is selling these parts __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

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