1970 c30 disc brake swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wjr · 01-02-2013, 03:56 PM

ive got a 1970 chevy cab chasis truck, i want to put the mid 80's to late 80's whole under carriage in my truck to get disc brakes. has anyone don e this swap ? what problems if any ? and the 80's front undercarriage i have is a hydro boost drake system, whic h i do not want to use on my 1970 1 ton. Calipers ? or will these work with the power brake system on my 70 model now ? Thanks

wjr · 01-03-2013, 03:57 PM

well its under there now. had to drill extra hole where top a arm bolted to frame, that was the only mod to get the 87 1 ton carriage bolted up.moving on now to next step. oh and the steering is hooked up with the purchase of new tie rod ends,es409l inners and es409r outers,es2004s sleeves through orilleys master pro. using 70 ps box and center link.

Longhorn 70 · 01-03-2013, 04:30 PM

I am doing a C20 Longhorn which, I believe, has the same frame. I chose to just use a kit that had 71 ball joints, tie rods and spindles.

wjr · 01-04-2013, 11:09 AM

that may have been my best bet but i already had the undercarriage. i want to put a diesel in this truck so bad but dont think my budget will allow it. i have a 454 already built on the test stand ready for my truck. But i would like to put a diesel in it,but finding a good cheap diesel , not sure of what my options are on diesel motors. i know i cant just run out and buy a cummins or duramax.ive had them both in other trucks factory and liked them both but i'm not sure of other diesel motors out there that i may be able to pick up reasonable for this truck. i do pull with this truck. i just toiok the vortec 350 out of it. boy, if anybody had any advice or insight on this it would help.

Mike C · 01-04-2013, 08:46 PM

Nice job on your brake swap. Having a late model intercooled diesel would be cool, but it's not quite as cheap a junkyard swap as your brakes. Plenty of 6.2 and 6.5 diesels out there for not much $, but don't expect common rail performance out of them. But they are a pretty easy swap and not a lot of money if you must have a diesel. But the 454 is probably a better choice IMO.

wjr · 01-06-2013, 02:59 AM

I'm going to agree with you on that. It would be nice to have a newer style diesel in the truck, but I already have the 454 built, and I really like the big blocks, so that's going to be the choice for now. Thanks for all input.
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01-02-2013, 03:56 PM	#1
wjr Registered User Join Date: Nov 2006 Location: mo Posts: 19	1970 c30 disc brake swap ive got a 1970 chevy cab chasis truck, i want to put the mid 80's to late 80's whole under carriage in my truck to get disc brakes. has anyone don e this swap ? what problems if any ? and the 80's front undercarriage i have is a hydro boost drake system, whic h i do not want to use on my 1970 1 ton. Calipers ? or will these work with the power brake system on my 70 model now ? Thanks

01-03-2013, 03:57 PM	#2
wjr Registered User Join Date: Nov 2006 Location: mo Posts: 19	Re: 1970 c30 disc brake swap well its under there now. had to drill extra hole where top a arm bolted to frame, that was the only mod to get the 87 1 ton carriage bolted up.moving on now to next step. oh and the steering is hooked up with the purchase of new tie rod ends,es409l inners and es409r outers,es2004s sleeves through orilleys master pro. using 70 ps box and center link.

01-03-2013, 04:30 PM	#3
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Re: 1970 c30 disc brake swap I am doing a C20 Longhorn which, I believe, has the same frame. I chose to just use a kit that had 71 ball joints, tie rods and spindles. __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9

01-04-2013, 11:09 AM	#4
wjr Registered User Join Date: Nov 2006 Location: mo Posts: 19	Re: 1970 c30 disc brake swap that may have been my best bet but i already had the undercarriage. i want to put a diesel in this truck so bad but dont think my budget will allow it. i have a 454 already built on the test stand ready for my truck. But i would like to put a diesel in it,but finding a good cheap diesel , not sure of what my options are on diesel motors. i know i cant just run out and buy a cummins or duramax.ive had them both in other trucks factory and liked them both but i'm not sure of other diesel motors out there that i may be able to pick up reasonable for this truck. i do pull with this truck. i just toiok the vortec 350 out of it. boy, if anybody had any advice or insight on this it would help. Attached Images

01-04-2013, 08:46 PM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: 1970 c30 disc brake swap Nice job on your brake swap. Having a late model intercooled diesel would be cool, but it's not quite as cheap a junkyard swap as your brakes. Plenty of 6.2 and 6.5 diesels out there for not much $, but don't expect common rail performance out of them. But they are a pretty easy swap and not a lot of money if you must have a diesel. But the 454 is probably a better choice IMO. __________________ 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

01-06-2013, 02:59 AM	#6
wjr Registered User Join Date: Nov 2006 Location: mo Posts: 19	Re: 1970 c30 disc brake swap I'm going to agree with you on that. It would be nice to have a newer style diesel in the truck, but I already have the 454 built, and I really like the big blocks, so that's going to be the choice for now. Thanks for all input. Posted via Mobile Device



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