Installing my '85 MC & booster in my '70 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70C10Toejam** · 04-24-2007, 11:39 PM

More pics added.

This is how I fit the '85 booster in without modifying the brackets. It may not be real pretty, but it would still be acceptable for a core return.

I used some aluminum c-channel I had from some chargers. The top one is what it looks like before cutting. The other pieces are shims for the top mounting holes. They can be seen in the later pictures.

The 2nd and 3rd pics are a test fit, with the channels reversed left and right side to show how they fit and the minor bolt issue I ran into. The lower bolts could be cut down, since they no longer have to reach through the MC. I chose to leave them as is for now, later I will change for a tighter fit.

The last 2 pics are a final mockup with the MC attached. The channel pieces have been installed on their correct sides. One other change I might do later with the other full channel is to cut longer pieces and not mount the middle hole in the booster bracket and instead use the top and bottom ones. Then cutting the bottom up towards the middle mounting bolt. Don't know if it would affect the strength of the mounts, but would also eliminate the bolt interferance without cutting the original bolt down.

The booster as it is now is about 3/4 inch longer than the original booster set up, but could be closer with shallower channels. Maybe 1/2 inch without interfering with the column shift.

walker · 04-24-2007, 11:47 PM

Just curious, is there an advantage to using the later model booster?

**70C10Toejam** · 04-24-2007, 11:54 PM

Not that I'm aware of...I took all my parts off a '85 chassis: spindles, calipers, steering linkage etc. Just making what I had fit, that's all. Even have 90% of the hard lines

PS box too.

sodak69c10 · 04-25-2007, 12:48 AM

i thinking about this on my truck, and was wondering i have drums on all 4 corners still and was wondering if you used the original proportioning valve of the newer one?

**70C10Toejam** · 04-25-2007, 12:54 AM

I'm gonna use the proportioning valve from the '85. The one for drum/drum is a distribution box, not really a prop. valve. Just don't have it on yet. Still on stands

RACINJASON22 · 04-25-2007, 01:03 AM

Nice write up ans GR8 pic discription! could move this one to FAQ's section after awhile.

Thank You RJ22

**70C10Toejam** · 04-25-2007, 11:20 PM

If this makes someone elses work easier...all the better.

**70C10Toejam** · 05-10-2007, 11:12 PM

Decided to add a bit more since I finished this.

First is the finished instal.
Second is the pushrod extended to fit, with 3/8 thread-all and a coupler nut.
Third is a not so good one of the factory shoulder bolt after instal, with shoulder ground down to the 1/2 inch hole in the rod.

The last 3 are of a flange-nut I practiced on to grind to fit the push-rod. Started with a 3/8 nut, had a 9/16 head, and with the flange, was similar to the shoulder-bolt.

**70C10Toejam** · 05-10-2007, 11:14 PM

forgot the one of the installed bolt, not that you can actually see much.

just too D^$#$% hard to remove it again for a photo op.

04-24-2007, 11:39 PM	#1
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Installing my '85 MC & booster in my '70 More pics added. This is how I fit the '85 booster in without modifying the brackets. It may not be real pretty, but it would still be acceptable for a core return. I used some aluminum c-channel I had from some chargers. The top one is what it looks like before cutting. The other pieces are shims for the top mounting holes. They can be seen in the later pictures. The 2nd and 3rd pics are a test fit, with the channels reversed left and right side to show how they fit and the minor bolt issue I ran into. The lower bolts could be cut down, since they no longer have to reach through the MC. I chose to leave them as is for now, later I will change for a tighter fit. The last 2 pics are a final mockup with the MC attached. The channel pieces have been installed on their correct sides. One other change I might do later with the other full channel is to cut longer pieces and not mount the middle hole in the booster bracket and instead use the top and bottom ones. Then cutting the bottom up towards the middle mounting bolt. Don't know if it would affect the strength of the mounts, but would also eliminate the bolt interferance without cutting the original bolt down. The booster as it is now is about 3/4 inch longer than the original booster set up, but could be closer with shallower channels. Maybe 1/2 inch without interfering with the column shift. Attached Images __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys Last edited by 70C10Toejam; 05-10-2007 at 11:15 PM.

04-24-2007, 11:47 PM	#2
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Re: Installing my '85 MC & booster in my '70 Just curious, is there an advantage to using the later model booster? __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

04-24-2007, 11:54 PM	#3
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Installing my '85 MC & booster in my '70 Not that I'm aware of...I took all my parts off a '85 chassis: spindles, calipers, steering linkage etc. Just making what I had fit, that's all. Even have 90% of the hard lines PS box too. __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys Last edited by 70C10Toejam; 04-24-2007 at 11:55 PM.

04-25-2007, 12:48 AM	#4
sodak69c10 Registered User Join Date: Mar 2007 Location: Rapid City, South Dakota Posts: 285	Re: Installing my '85 MC & booster in my '70 i thinking about this on my truck, and was wondering i have drums on all 4 corners still and was wondering if you used the original proportioning valve of the newer one? __________________ ,Clint LOUD PIPES SAVE LIVES 69 C-10 short stepside 406 sbc, 02 YAMAHA WR250F, 07 SUZUKI SV650S, 81 Grand Prix 355 sbc, 81 XT 500 YAMAHA

04-25-2007, 12:54 AM	#5
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Installing my '85 MC & booster in my '70 I'm gonna use the proportioning valve from the '85. The one for drum/drum is a distribution box, not really a prop. valve. Just don't have it on yet. Still on stands __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

04-25-2007, 01:03 AM	#6
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: Installing my '85 MC & booster in my '70 Nice write up ans GR8 pic discription! could move this one to FAQ's section after awhile. Thank You RJ22 __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!

04-25-2007, 11:20 PM	#7
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Installing my '85 MC & booster in my '70 If this makes someone elses work easier...all the better. __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

05-10-2007, 11:12 PM	#8
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Installing my '85 MC & booster in my '70 Decided to add a bit more since I finished this. First is the finished instal. Second is the pushrod extended to fit, with 3/8 thread-all and a coupler nut. Third is a not so good one of the factory shoulder bolt after instal, with shoulder ground down to the 1/2 inch hole in the rod. The last 3 are of a flange-nut I practiced on to grind to fit the push-rod. Started with a 3/8 nut, had a 9/16 head, and with the flange, was similar to the shoulder-bolt. Attached Images __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

05-10-2007, 11:14 PM	#9
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Installing my '85 MC & booster in my '70 forgot the one of the installed bolt, not that you can actually see much. just too D^$#$% hard to remove it again for a photo op. Attached Images __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys



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