|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
02-26-2014, 09:59 PM
|
#1 |
|
Registered User
 
Join Date: Apr 2011
Location: AMERICAN FORK, UTAH
Posts: 535
|
1972 C-10 Longbed, 2 wheel drive, questions
Okay guys, I have three questions.
What do I do about a bouncing tach needle? From idle to 2000 rpms needle bounces. Seems to smooth out after 2000. I have checked ground wire, power wire and signal wire. All seem to be fine. Does anyone have any suggestions? I am running an HEI. I am using the power wire from the old coil. I think I have read that it is wrong to use this power lead for the HEI. If so, what do I need to do to get power to the HEI? Could this have any effect on the tach problem above? How far does the screw in the center of the brake booster, that pushes the piston in the master cylinder, need to be screwed out? Thanks for any information you can give me. |
|
|
|
02-26-2014, 11:47 PM
|
#2 |
|
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
Id clean the tach 40 years of dust can cause some issues.
You do need a new wire. Just replace the actual wire, the factory wire has built in resistance. No idea on the master cylinder screw.
__________________
67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
|
|
|
|
02-27-2014, 12:34 AM
|
#3 |
|
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
The orignal wire is a resistant wire and needs to be replaced with just a regular wire so the HEI gets full voltage when cranking the truck. It should also help with that issue also if your having trouble cranking it.
Don't know about the screw.  
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
|
|
|
|
02-27-2014, 03:12 AM
|
#4 |
|
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
I don't want to hijack the thread but can someone say what gauge and resistance the wire should be? Just wanna learn a bit more.
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
|
|
|
|
02-28-2014, 08:21 PM
|
#5 |
|
Registered User
Join Date: Apr 2011
Location: AMERICAN FORK, UTAH
Posts: 535
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
The tach is new the screw in the center of the boster can anyboby give info on that.
|
|
|
|
|
02-28-2014, 11:27 PM
|
#6 | |
|
8 vehicles only 4 that run
Join Date: Feb 2006
Location: Clemson, SC
Posts: 236
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
Quote:
http://67-72chevytrucks.com/vboard/s...d.php?t=498293 http://67-72chevytrucks.com/vboard/s...d.php?t=601985 And last part of this post http://67-72chevytrucks.com/vboard/s...62&postcount=8 Maybe this helps a little.
__________________
95 2500 350 w/ 3.73  72 GMC 1500 SWB stepside 65 Chevy C10 SWB stepside 72 Chevy C10 LWB fleetside Last edited by ClemsonChevy; 02-28-2014 at 11:37 PM. |
|
|
|
|
|
03-01-2014, 09:10 AM
|
#7 |
|
Registered User
Join Date: Jul 2013
Location: Wellsville,ohio
Posts: 140
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
My dad's 69 dodge had the same problem with his tick tock tach dash. But we just drove it easy( I can't lie it's a 440, we didn't drive it easy) but it straightened out after a couple hundred miles. Just drive and enjoy it and wait
|
|
|
|
|
03-01-2014, 09:44 AM
|
#8 |
|
Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,566
|
Re: 1972 C-10 Longbed, 2 wheel drive, questions
Or you could just drive it, enjoy it, and wait by the side of the road for a wrecker to come pick you up.
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
|
|
|
|
| Bookmarks |
|
|
Linear Mode
