The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-26-2018, 01:03 PM   #26
Cris
Registered User
 
Join Date: Aug 2016
Location: Los Altos Hills, California
Posts: 83
Re: How low without converting to disc?

lolife99: I see your point. It looks like six of one and half dozen of another. Neither looks ideal. This would be a good problem to plug into a suspension program to see which is the best compromise.

UKNOWME: Tires are 275-55-17's. 28.9" in diameter. I agree, I really want to go about another two inches lower. Unfortunately that extra two inches kicks off a C or step notch and more serious mods to the front A-arms.
Cris is offline   Reply With Quote
Old 03-26-2018, 01:25 PM   #27
UKNOWME
Senior Member
 
UKNOWME's Avatar
 
Join Date: Aug 2012
Location: Clovis, NM
Posts: 2,669
Re: How low without converting to disc?

Maybe I should just suck it up and do the CPP grand slam. It’s 1200 and includes all the drop components, disc brake conversion with new mater cylinder and brake booster, ball joints and tie rods.
__________________
2018 Audi S5- wife's ride
1980 Chevy Scottsdale http://67-72chevytrucks.com/vboard/s...d.php?t=543511
1981 Chevy Silverado- in pieces
1964 Chevy c10
1961 Chevy Apache 30
1988 Chevy c20
UKNOWME is offline   Reply With Quote
Old 03-26-2018, 05:16 PM   #28
theastronaut
Registered User
 
theastronaut's Avatar
 
Join Date: May 2011
Location: Anderson SC
Posts: 3,238
Re: How low without converting to disc?

I didn't spend near that much to drop my blue '66 C10, maybe only $800 bucks. I did it in two stages- the free way, I cut 1.5 coils off and removed the bump stop bracket to gain more travel. I also relocated the shock mount further up the frame to keep use of the stock length shocks. On the rear I removed the bump stop brackets and bolted in leftover springs from a friend's Jeep TJ for a 3-4" drop. I wouldn't go any lower than this up front with just cut or drop springs, you get into geometry/travel problems and the springs get loose in the cups when you lift the truck with a jack.

Stock height, and cut/jeep springs. The jeep springs are too soft if you plan on hauling or towing anything.






When I wanted to go lower I used CPP's disc/spindle kit, added rear drop blocks, a mild pipe notch, stiffer drop springs, and relocated the rear shocks using FrizzleFry's method. I left the factory single circuit manual master cylinder in place with no issues. The pedal feel and effort were really good actually, I never wished I had a booster. This is as low as you can go up front and have decent ground clearance, inner fender clearance, and suspension travel. Any lower and you'll need to section the crossmember and clearance the inner fenders for more up travel.




I modified a set of rear axle shock mounts so they'd bolt to the frame rails up front.






FrizzleFry's cheap/super effective rear shock relocation method, post #11. This works better than the normal relocation kits since it gets the shocks outside of the frame and closer to the wheel so the shocks can be more effective. I used gas shocks all around and sway bars front and rear and it drove great and cornered with less body roll than my autocross car.

http://67-72chevytrucks.com/vboard/s...postid=4730005





Last edited by theastronaut; 03-26-2018 at 05:21 PM.
theastronaut is offline   Reply With Quote
Old 03-26-2018, 05:19 PM   #29
UKNOWME
Senior Member
 
UKNOWME's Avatar
 
Join Date: Aug 2012
Location: Clovis, NM
Posts: 2,669
Re: How low without converting to disc?

Love it!
__________________
2018 Audi S5- wife's ride
1980 Chevy Scottsdale http://67-72chevytrucks.com/vboard/s...d.php?t=543511
1981 Chevy Silverado- in pieces
1964 Chevy c10
1961 Chevy Apache 30
1988 Chevy c20
UKNOWME is offline   Reply With Quote
Old 03-26-2018, 06:52 PM   #30
Cris
Registered User
 
Join Date: Aug 2016
Location: Los Altos Hills, California
Posts: 83
Re: How low without converting to disc?

theastronaut:

"and the springs get loose in the cups when you lift the truck with a jack"

I fixed this issue by using a longer upper bump stop. This doesn't allow the a-arms to drop as much during jacking and keeps the springs tight in the pockets.
Cris is offline   Reply With Quote
Old 03-26-2018, 07:22 PM   #31
AcampoDave
Registered User
 
AcampoDave's Avatar
 
Join Date: Feb 2013
Location: central California
Posts: 1,351
Re: How low without converting to disc?

Astronaut, you run an o.e.m. single pot m.c. with disc brakes? Most people who make that kind of upgrade are happy to be rid of that thing.
AcampoDave is offline   Reply With Quote
Old 03-26-2018, 07:37 PM   #32
theastronaut
Registered User
 
theastronaut's Avatar
 
Join Date: May 2011
Location: Anderson SC
Posts: 3,238
Re: How low without converting to disc?

Quote:
Originally Posted by Cris View Post
theastronaut:

"and the springs get loose in the cups when you lift the truck with a jack"

I fixed this issue by using a longer upper bump stop. This doesn't allow the a-arms to drop as much during jacking and keeps the springs tight in the pockets.

Great idea!


Quote:
Originally Posted by AcampoDave View Post
Astronaut, you run an o.e.m. single pot m.c. with disc brakes? Most people who make that kind of upgrade are happy to be rid of that thing.
Yeah, just a standard original M/C. I grew up driving a '64 VW with manual brakes so a lot of cars with boosted brakes just feel weird to me... not as much feedback from the pedal, too much pedal travel, and harder to modulate as precisely. So I like manual brakes better. I had completely rebuilt the stock brake system before swapping to discs so it already had a new stock M/C; I tried it and it worked great. If I do another I'd add a dual circuit M/C since they're safer with the same bore size and still no booster. It's not needed. A lot of "upgrades" are monkey see-monkey do, or people are misinformed by others saying that you HAVE to have power brakes to be able to stop good. The guy that bought the truck was skeptical of it when he first called about it but after test driving it he liked the pedal effort and feel.
theastronaut is offline   Reply With Quote
Old 03-26-2018, 09:28 PM   #33
AcampoDave
Registered User
 
AcampoDave's Avatar
 
Join Date: Feb 2013
Location: central California
Posts: 1,351
Re: How low without converting to disc?

Sure, boosters are optional and i don't use one either, but as for the single pot m.c and no prop valve with disc....."I don't think I'd do that" either.
AcampoDave is offline   Reply With Quote
Old 03-26-2018, 10:07 PM   #34
theastronaut
Registered User
 
theastronaut's Avatar
 
Join Date: May 2011
Location: Anderson SC
Posts: 3,238
Re: How low without converting to disc?

It worked and was new so I wasn't too worried about it. It locked up the fronts just before the rears so it didn't need a proportioning valve.

I put 90k miles on my VW with a single circuit M/C... obviously it didn't kill me. Would I rather have a dual circuit M/C? Of course. But they're not the death trap everyone makes them out to be if the system is maintained.
theastronaut is offline   Reply With Quote
Old 07-12-2018, 12:40 AM   #35
UKNOWME
Senior Member
 
UKNOWME's Avatar
 
Join Date: Aug 2012
Location: Clovis, NM
Posts: 2,669
Re: How low without converting to disc?

Finally lowered my 64 and installed wheels/tires. Not as low as I wanted but it will do for now. Also reupholstered the seat.
Attached Images
    
__________________
2018 Audi S5- wife's ride
1980 Chevy Scottsdale http://67-72chevytrucks.com/vboard/s...d.php?t=543511
1981 Chevy Silverado- in pieces
1964 Chevy c10
1961 Chevy Apache 30
1988 Chevy c20
UKNOWME is offline   Reply With Quote
Old 07-12-2018, 01:31 AM   #36
RUN GMC
Registered User
 
RUN GMC's Avatar
 
Join Date: May 2014
Location: North AL
Posts: 330
Re: How low without converting to disc?

Very very nice......is that New Mexico or Texas patina?
RUN GMC is offline   Reply With Quote
Old 07-12-2018, 04:29 PM   #37
Cris
Registered User
 
Join Date: Aug 2016
Location: Los Altos Hills, California
Posts: 83
Re: How low without converting to disc?

UKNOWME:

How did you lower?

Thanks, Cris
Cris is offline   Reply With Quote
Old 07-12-2018, 04:45 PM   #38
UKNOWME
Senior Member
 
UKNOWME's Avatar
 
Join Date: Aug 2012
Location: Clovis, NM
Posts: 2,669
Re: How low without converting to disc?

Quote:
Originally Posted by RUN GMC View Post
Very very nice......is that New Mexico or Texas patina?
NM to the best of my knowledge. It was last tagged in NM in 99
__________________
2018 Audi S5- wife's ride
1980 Chevy Scottsdale http://67-72chevytrucks.com/vboard/s...d.php?t=543511
1981 Chevy Silverado- in pieces
1964 Chevy c10
1961 Chevy Apache 30
1988 Chevy c20
UKNOWME is offline   Reply With Quote
Old 07-12-2018, 04:47 PM   #39
UKNOWME
Senior Member
 
UKNOWME's Avatar
 
Join Date: Aug 2012
Location: Clovis, NM
Posts: 2,669
Re: How low without converting to disc?

Quote:
Originally Posted by Cris View Post
UKNOWME:

How did you lower?

Thanks, Cris
4/5 drop coils. Iím about to cut a coil in the front and see what happens. Pretty sure Iím gonna have to swap the front to disk and get drop spindles to have the fender sit at or below the top of the tire.
__________________
2018 Audi S5- wife's ride
1980 Chevy Scottsdale http://67-72chevytrucks.com/vboard/s...d.php?t=543511
1981 Chevy Silverado- in pieces
1964 Chevy c10
1961 Chevy Apache 30
1988 Chevy c20
UKNOWME is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:27 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com