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Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1347817 Tue Feb 25 2020 12:34 AM
Joined: Dec 2019
Posts: 44
K
Wrench Fetcher
Got the Zenith installed...man what a difference. Runs like a champ. Lost just a little punch above half throttle but not surprised going from a venturi that was badly undersized. The low to mid throttle response, smooth running, and much better fuel economy was well worth the little loss above. May do a little tuning on it just to see if that makes a difference. As a side note, if any of you are trying to locate cup grease, or the closest equivalent that exists today (lithium soap/mineral oil) for your distributors, speedo drive, etc...I found this. Can be ordered off Amazon and other places. See pic. Also got the alignment and gear box adjustment done...drives absolutely straight with zero wandering. It's a pleasure to drive now. I'm going to say I'm pretty much done with it as is. Itll be a little while before I have a chance to get the 302 done for it but I'm in no hurry.

Attached Files
20200224_192146.jpg (76.28 KB, 135 downloads)

Keep the old ones running...
Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1347942 Wed Feb 26 2020 02:05 AM
Joined: Sep 2013
Posts: 1,011
M
Shop Shark
Well Done Sir!!!

Thanks for sharing and don't be a stranger.

RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1348839 Thu Mar 05 2020 03:39 AM
Joined: Dec 2019
Posts: 44
K
Wrench Fetcher
Being a stickler for details...it has bothered me that the temp gauge on Shop Truck wasnt reading accurately - way too low. The reason...temp sending units for 70 yr old 6 volt electrical systems and gauges are non existent...or have a completely wrong impedance. So the fix...get the engine to known operating temperature of 170 degrees. In parallel, run 1 wire to gauge and a second wire shorted to ground. In the second wire, stack resistors until the gauge reads 170 (accounting for voltage drop in the 6 volt charging system at idle), then soulder the resistors together. From there, if the engine gets hotter, the sending unit will continue to function normally and taaadaaa....we now have a perfectly celebrated temp gauge at 94ohms worth of 1/4 watt resistors. Pics are just showing my testing with different resistance to narrow down which to use. 2 47 ohms did the trick.

Attached Files
IMG_20200304_212739_612.jpg (67.21 KB, 103 downloads)
IMG_20200304_212739_610.jpg (41.3 KB, 104 downloads)
IMG_20200304_212739_613.jpg (131.73 KB, 104 downloads)
20200304_202904.jpg (140.76 KB, 103 downloads)

Keep the old ones running...
Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1349055 Fri Mar 06 2020 07:38 PM
Joined: Jul 2019
Posts: 243
B
Shop Shark
I was gonna go that route because mine was originally a electric sender on my 49 gmc but I ended up just swapping a mechanical guage into my cluster but i used the original weathered looking gauge face so you cant tell. Its surprisingly accurate when comparing the reading on my scantool from the obd2 port.

Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1349075 Fri Mar 06 2020 09:14 PM
Joined: Dec 2019
Posts: 44
K
Wrench Fetcher
A custom tach...Westach did this for me.

Attached Files
20200306_143846.jpg (154.65 KB, 99 downloads)

Keep the old ones running...
Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1349077 Fri Mar 06 2020 10:22 PM
Joined: Sep 2001
Posts: 29,874
ace skiver
Very nice, kevinb1450


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE [1954advance-design.com] - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1349127 Sat Mar 07 2020 01:50 PM
Joined: Sep 2013
Posts: 1,011
M
Shop Shark
The tach, very nice. Wonder if Westach assigned a part number to your tach. Care to share price? PM is OK.

Thanks, RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1349134 Sat Mar 07 2020 02:28 PM
Joined: Jan 2010
Posts: 4,510
D
Shop Shark
Nice range

Re: 1949 GMC Daily Driver Conversion and Repairs
kevinb1450 #1350242 Mon Mar 16 2020 08:14 PM
Joined: Dec 2019
Posts: 44
K
Wrench Fetcher
He did an awesome job. Completely custom. Chose the 3500 rpm range, 6v and pos ground. Works awesome. I'm hesitant to share what I paid, he may have given me a dealer price. May be best to call him, tell him you saw what he did for me, and get a quote. Thanks for the compliments on it.

Also...I started the tear down of the 302 and uploaded a video on you tube. You guys asked me to update ya, so heres the link. Have a look if you like. Anxious to hear what you guys think. The video is mainly intended for the who aren't familiar at all with these so much of it some of you may already know.

https://youtu.be/8ip-liF2DTM


Keep the old ones running...
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