Evening All!

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Bretts77C10

Junior Member
Joined
Oct 4, 2018
Posts
2
Reaction score
2
Location
Livonia MI
First Name
Brett
Truck Year
1977
Truck Model
C10
Engine Size
250
I bought a 77 Chevy C10 step side in March (during a snow storm) and have been slowing restoring it (everytime I drive it something breaks!) So instead of working on the body like my intentions, I've been working on the driving/stoping components.

It only has a 4.1 in it, little inline 6. It wants to stall when taking off, so you have to take off extremely slow and then it's fine. The guy who I purchased it from blocked off and re-routed a bunch of vacuum lines and disconnected the EGR valve. Does anyone have any good pictures of this motor and the proper way the vacuum lines should be ran? I've had the hardest luck here. I'm also thinking about replacing the EGR valve and the carb (there seems to be 4 different single barrel carbs for this model). Any help/pointers would be great!

I've already had to replace power steering pump/lines, brake lines (he didn't mount them correctly and they rubbed holes in them), radiator, and fuel tank/components/mounts.

My goal was to start replacing rusted body parts, but this thing was less mechanically sound than I thought :(
 

Old77

Administrator
Staff member
Admin
Joined
Aug 19, 2010
Posts
28,220
Reaction score
8,590
Location
Kansas City, Mo
First Name
Jacob
Truck Year
1977/1990/1991
Truck Model
C10 longbed/R1500 Burb/R3500 Dually
Engine Size
350/350/454
:welcome:
 

1973c10

Full Access Member
Joined
Sep 25, 2015
Posts
6,376
Reaction score
24,013
Location
Oregon
First Name
Don
Truck Year
1973
Truck Model
C10
Engine Size
454
Welcome aboard
 

legopnuematic

Licensed Junk Dealer
Supporting Member
Joined
Oct 27, 2016
Posts
1,709
Reaction score
3,656
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
Sounds like you have some kind of vacuum leak. Is it an automatic or manual? On turbo 350's the vacuum modulator line can fall off and create a vacuum leak and it won't be noticeable from the engine bay.
You must be registered for see images attach

1977 Overhaul Manual
 

Charlie

Mopar by Birth. Chevy by Choice.
Joined
Aug 2, 2017
Posts
1,837
Reaction score
909
Location
Euless, Texas
First Name
Don
Truck Year
1974
Truck Model
Cheyenne 10 LWB
Engine Size
350/TH350/AC/4 BBL Quadrajet
:welcome:
 

dvdswan

Full Access Member
Joined
Mar 11, 2014
Posts
2,366
Reaction score
2,024
Location
Port Orchard, WA
First Name
Dave
Truck Year
1978
Truck Model
K10
Engine Size
350
Welcome to the site.
 

animal

Super Moderator
Staff member
Super Moderator
Joined
Jul 30, 2010
Posts
5,408
Reaction score
3,496
Location
Georgia
First Name
Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

Bretts77C10

Junior Member
Joined
Oct 4, 2018
Posts
2
Reaction score
2
Location
Livonia MI
First Name
Brett
Truck Year
1977
Truck Model
C10
Engine Size
250
Sounds like you have some kind of vacuum leak. Is it an automatic or manual? On turbo 350's the vacuum modulator line can fall off and create a vacuum leak and it won't be noticeable from the engine bay.
You must be registered for see images attach

1977 Overhaul Manual

It's an automatic. Just got it back today from the shop with new fuel tank, sending unit, tank mounts and straps! There were some pretty bad lines that they fixed for me too. Time to work on this stalling issue now when taking off.
 

WFO

Full Access Member
Joined
Jan 6, 2017
Posts
3,380
Reaction score
4,420
Location
Texas Panhandle
First Name
Dan
Truck Year
1986
Truck Model
K20
Engine Size
350
Welcome from the Texas Panhandle.
 

TravisB

Full Access Member
Joined
Jan 3, 2018
Posts
1,087
Reaction score
1,071
Location
Kentucky
First Name
Travis
Truck Year
1978
Truck Model
C10
Engine Size
350
:welcome:
 

K201979

Full Access Member
Joined
Oct 22, 2018
Posts
879
Reaction score
862
Location
Winona, missouri
First Name
Hippie
Truck Year
1979
Truck Model
K20
Engine Size
350ci
I had the vacuume line fall off my th400 and it ran pretty rough till i remembered about it. :welcome:
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,158
Reaction score
15,957
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
Sounds like you have some kind of vacuum leak. Is it an automatic or manual? On turbo 350's the vacuum modulator line can fall off and create a vacuum leak and it won't be noticeable from the engine bay.
You must be registered for see images attach

1977 Overhaul Manual

Been there, done that myself.
 

Forum statistics

Threads
41,852
Posts
903,521
Members
33,365
Latest member
rossivey
Top