1970 front disc conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

polevault1977 · 07-15-2004, 03:55 PM

I have a 70 frame that I converted to front disc brakes. As you know the steel brake line run on the backside of the front crossmember opposed to the 71 and 72 being in front. Looping the flex hoses from steel line to cylinder really seems like a tight bend. I could swap sides the the flexes and loop it towards the rear, but I didn't really like that look either. Anyone made this conversion and how did your flex hoses work out? I may just need to by long hoses instead of using stock. I don't really want to redo my steel lines. Any help and pics appreciated. Danny

PS How do i insert a pic. Insert Image does not seem to let me.??

gr8scott51 · 07-15-2004, 04:00 PM

http://www.classicperform.com/produc...-Hose-Kits.htm

These guys will help.

RON WOODGEARD · 07-15-2004, 04:18 PM

Quote:

Originally Posted by polevault1977

PS How do i insert a pic. Insert Image does not seem to let me.??

The best way to insert a Picture is to "Web Host" it. That's where you take it from your hardrive and put it on the Web, Then you go to the web spot, find the Pic, Right click, and Highlight "Properties" Highlight The HTTP (that's where the address to where your picture is) and copy, Then come back to your post and do this..

[img] then insert here (paste) where the Http of your Pic, [/img]

You have to do the slant after the [ of the last img....

Other wise you have to size the picture down to get it within the size allowable.

polevault1977 · 07-15-2004, 06:43 PM

Thanks, Danny

Tx Firefighter · 07-15-2004, 07:28 PM

I did the same thing to my 70 and ran into the same situation. I did not want to bend all new hard lines. I called ECE and they have a set of special conversion brake hoses just for this situation.

The big brown truck stopped at my house 4 days later with them.

crazy longhorn · 07-15-2004, 08:15 PM

You gotta love seeing that big brown truck! The driver here (Pauley), brings the pcs right out to the garage. He is a gearhead , & runs a BB 70 Nova! Last trip in, the wheeler cart brought the goods up the drive, to the garage.....& the dude just couldnt leave till I opened that big box that had Richmond all over it

Back to topic, I did my brakes the hard way(cheap tho). my longhorn has 1975 1/2 ton pcs under it, & the master, prop valves,lines ,hoses & all were used. I drilled a couple holes in the very front crossmember to mount the prop valve, & a hole in ea side frame rail for the hoses(crawl under a 73-up truck & take a look). The brake hoses run across the front of the top a arms.....maybe not the way you want to go, but another option. Best of luck,crazyL

polevault1977 · 07-16-2004, 09:58 AM

Thanks for the info crazyal and txfirefighter. I'm thinking maybe just buy the new longer hoses. Hey Txfirefighter, I'm not to far from you. My uncle used to live on rambling trail there in weatherford, but he is moving to fla.

Later dudes,

Danny

SCOTI · 07-16-2004, 11:44 AM

Quote:

Originally Posted by crazy longhorn

....my longhorn has 1975 1/2 ton pcs under it, & the master, prop valves,lines ,hoses & all were used. I drilled a couple holes in the very front crossmember to mount the prop valve, & a hole in ea side frame rail for the hoses(crawl under a 73-up truck & take a look). The brake hoses run across the front of the top a arms.....maybe not the way you want to go, but another option.....

That's how I did mine as well. I don't remember having to drill holes on the side of the frame though as I used existing holes. I did cut one of the upper a-arm hose tabs & invert it so the hose would have a smooth (& symetrical) transition.

polevault1977 · 07-16-2004, 04:31 PM

Greasemonkey,

I bought new hard lines for a 70 frame and they fit fine. It's flex hoses i bought for a 72 that is the problem. I have them hooked up, but they have two really tight bends, kinda like a S that is bent tighter than it should be. I going to check into the hoses that are specifically made for this swap. I just never thought about them being any different. Live and learn!!
Danny

polevault1977 · 07-16-2004, 04:38 PM

I'm trying to figure out the pic posting. Let's see if this works

greasemonkey · 07-16-2004, 10:32 AM

polevault1977: did you just buy all new hardlines for a 72 Chevy truck? I have run into the same problem as you, and didn't know if i could reuse any of my old lines since they are in good shape. How do the lines attach to the front of the crossmember?
Thanks,
John

greasemonkey · 07-17-2004, 11:18 AM

TX, that's exactly what I was looking for. Thanks!

polevault1977 · 07-17-2004, 07:19 PM

Good info. Thanks. Wish I was plumbing to the mc, that'll be a little further down the road. Danny

07-15-2004, 03:55 PM	#1
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	1970 front disc conversion I have a 70 frame that I converted to front disc brakes. As you know the steel brake line run on the backside of the front crossmember opposed to the 71 and 72 being in front. Looping the flex hoses from steel line to cylinder really seems like a tight bend. I could swap sides the the flexes and loop it towards the rear, but I didn't really like that look either. Anyone made this conversion and how did your flex hoses work out? I may just need to by long hoses instead of using stock. I don't really want to redo my steel lines. Any help and pics appreciated. Danny PS How do i insert a pic. Insert Image does not seem to let me.??

07-15-2004, 04:00 PM	#2
gr8scott51 Registered User Join Date: Mar 2003 Location: Bremerton, WA Posts: 1,839	http://www.classicperform.com/produc...-Hose-Kits.htm These guys will help. __________________ Silence is golden, duct tape is silver. - Scott

07-15-2004, 07:28 PM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	I did the same thing to my 70 and ran into the same situation. I did not want to bend all new hard lines. I called ECE and they have a set of special conversion brake hoses just for this situation. The big brown truck stopped at my house 4 days later with them. __________________ I'm on the Instagram- @Gearhead_Kevin

07-15-2004, 08:15 PM	#6
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	You gotta love seeing that big brown truck! The driver here (Pauley), brings the pcs right out to the garage. He is a gearhead , & runs a BB 70 Nova! Last trip in, the wheeler cart brought the goods up the drive, to the garage.....& the dude just couldnt leave till I opened that big box that had Richmond all over it Back to topic, I did my brakes the hard way(cheap tho). my longhorn has 1975 1/2 ton pcs under it, & the master, prop valves,lines ,hoses & all were used. I drilled a couple holes in the very front crossmember to mount the prop valve, & a hole in ea side frame rail for the hoses(crawl under a 73-up truck & take a look). The brake hoses run across the front of the top a arms.....maybe not the way you want to go, but another option. Best of 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....

07-16-2004, 10:32 AM	#11
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	polevault1977: did you just buy all new hardlines for a 72 Chevy truck? I have run into the same problem as you, and didn't know if i could reuse any of my old lines since they are in good shape. How do the lines attach to the front of the crossmember? Thanks, John __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

07-15-2004, 06:43 PM	#4
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	Thanks, Danny

07-16-2004, 09:58 AM	#7
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	Thanks for the info crazyal and txfirefighter. I'm thinking maybe just buy the new longer hoses. Hey Txfirefighter, I'm not to far from you. My uncle used to live on rambling trail there in weatherford, but he is moving to fla. Later dudes, Danny

07-16-2004, 04:31 PM	#9
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	Greasemonkey, I bought new hard lines for a 70 frame and they fit fine. It's flex hoses i bought for a 72 that is the problem. I have them hooked up, but they have two really tight bends, kinda like a S that is bent tighter than it should be. I going to check into the hoses that are specifically made for this swap. I just never thought about them being any different. Live and learn!! Danny

07-16-2004, 04:38 PM	#10
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	I'm trying to figure out the pic posting. Let's see if this works

07-17-2004, 11:18 AM	#12
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	TX, that's exactly what I was looking for. Thanks! __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

07-17-2004, 07:19 PM	#13
polevault1977 Pick'n up the pieces! Join Date: Sep 2002 Location: Marietta, Oklahoma Posts: 198	Good info. Thanks. Wish I was plumbing to the mc, that'll be a little further down the road. Danny



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