The Ford Barn

46WINE · 10-14-2015, 06:02 PM

I've got a 46 ford coupe with a ford 302 carbureted engine. My problem is non of the gauges are hooked up. It's a 12 volt system. What would be the proper way to hook up the gauges. I have the original 46 gauges and dash wireing in the car. Or is there some written information that I can get that can help me do the job. Would appreciate any help I could get. Thanks all.

waterboychuck · 10-14-2015, 06:15 PM

Try this.
http://dennis-carpenter.com/voltage-reducer/p/D-10800/

39topless · 10-14-2015, 06:18 PM

You may have better luck posting your question on the H.A.M.B. site. Just an opinion, a 302 seems a bit under-powered for your 46'. Good Luck.

scooder · 10-15-2015, 01:52 AM

If a 302 in a 46 Ford is under powered, then what is a 46 Ford with a stock flathead?

46 wine, you need to fit voltage reducers on the oil, fuel and temp gauges. Amp gauge is fine as it is. The problem I believe your gonna have is the sender units for the temperate and oil pressure have to be compatible, the stock flathead ones need to be installed in the 302 for them to read anywhere near accurate. If you can't do this, you'll need to gut the gauges and fit 302 compatible guts in the gauges. This would be the nice way to do it. Other option is to fit an after market gauge setup.
Martin.

koates · 10-15-2015, 03:23 AM

39 topless, stock 1946 ford flathead approx. 100 HP. Stock 302 ohv 220 HP plus. Go figure. Regards, Kevin.

JSeery · 10-15-2015, 07:12 AM

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Diagrams of the original type gauges. Modern senders are resistance devices, the original Ford type senders are a pulse type of device (they use points that open and close). The Ford gauges and senders have the same current flowing through them and the heat in the gauge coil matches the heat in the sender (this is just a quick simple explanation). On the temp senders only the single wire sender would be used (the dual wire is basically an on/off switch). Some have claimed success with using later resistance senders but I would try and adapt the original senders.

RalphG · 10-15-2015, 08:53 AM

Quote:

Originally Posted by scooder

If a 302 in a 46 Ford is under powered, then what is a 46 Ford with a stock flathead?

Martin.

My thoughts exactly. I still remember the first ride in my aunt's brand new 302 powered 69 Ford Falcon. After riding in the 52 Merc as a kid , this Falcon 302 seemed like an absolute rocket with unlimited power and acceleration. (Yes we tried it out :-) Worlds apart from the old 255 flathead.

4t8v8 · 10-15-2015, 08:59 AM

Isn't horsepower great. It can be whatever you want it to be. A 302 in 1969 made 220 HP. In 1975 the same engine made 120 HP. Your tax dollars at work. A stock 239 flathead makes 100HP? Yeah, right.

19Fordy · 10-15-2015, 10:06 AM

The easiest way would be to install 12V under dash gauges compatible to the 302. This includes the fuel gauge and matching fuel sender unit in your gas tank. This is worth reading. http://www.jalopyjournal.com/forum/t...-vr-88.936572/

39topless · 10-15-2015, 10:22 AM

Quote:

Originally Posted by koates

39 topless, stock 1946 ford flathead approx. 100 HP. Stock 302 ohv 220 HP plus. Go figure. Regards, Kevin.

I'm well aware that a 302 will produce more horse power than the stock 239. If you're going to go to the trouble of installing a "modern" engine in a big heavy 46', you may as well put in something stronger than a 302. Just my opinion.

clydemc · 10-15-2015, 07:59 PM

46 had positive ground.6 v. if you good remove backs on old gauges mount new ones in there place speedo the same lot of work. Looks stock good luck

JSeery · 10-15-2015, 08:41 PM

Quote:

Originally Posted by clydemc

46 had positive ground.6 v. if you good remove backs on old gauges mount new ones in there place speedo the same lot of work. Looks stock good luck

Don't think the polarity is an issue, but the voltage is. Voltage reducers are required.

Marvin/TN · 10-15-2015, 10:03 PM

Many years ago I put A GM engine in my 51 F-1. All I did was to switch the sending units to the GM engine and everything worked. No Voltage reducers and it was a 12 volt system. Drove the truck for about 15 years as a daily driver. I even used a GM heater blower resister to use the 6 volt heater. Picked out a coil with 7 volts reading with a VOM. The resister had to be in the air stream to keep it cool.

Marv · 10-16-2015, 04:57 AM

I put a 302 in a 47 coupe and went with 12 volt. If i remember correctly there is one wire from the ignition switch that feeds all the gauges. I put a resister in the wire between the ignition switch and the gauges and everything worked fine and never had any trouble. No junk gauges under the dash.

10-14-2015, 06:02 PM	#1
46WINE Member Join Date: May 2010 Posts: 48	46 ford with 302 I've got a 46 ford coupe with a ford 302 carbureted engine. My problem is non of the gauges are hooked up. It's a 12 volt system. What would be the proper way to hook up the gauges. I have the original 46 gauges and dash wireing in the car. Or is there some written information that I can get that can help me do the job. Would appreciate any help I could get. Thanks all.

10-14-2015, 06:15 PM	#2
waterboychuck Senior Member Join Date: Jan 2012 Location: Nine Mile Falls,WA Posts: 900	Re: 46 ford with 302 Try this. http://dennis-carpenter.com/voltage-reducer/p/D-10800/ __________________ The sign of a good craftsman is how well they cover up their mistakes.

10-14-2015, 06:18 PM	#3
39topless Senior Member Join Date: Sep 2013 Posts: 1,027	Re: 46 ford with 302 You may have better luck posting your question on the H.A.M.B. site. Just an opinion, a 302 seems a bit under-powered for your 46'. Good Luck.

10-15-2015, 01:52 AM	#4
scooder Senior Member Join Date: Jul 2010 Posts: 2,593	Re: 46 ford with 302 If a 302 in a 46 Ford is under powered, then what is a 46 Ford with a stock flathead? 46 wine, you need to fit voltage reducers on the oil, fuel and temp gauges. Amp gauge is fine as it is. The problem I believe your gonna have is the sender units for the temperate and oil pressure have to be compatible, the stock flathead ones need to be installed in the 302 for them to read anywhere near accurate. If you can't do this, you'll need to gut the gauges and fit 302 compatible guts in the gauges. This would be the nice way to do it. Other option is to fit an after market gauge setup. Martin.

10-15-2015, 03:23 AM	#5
koates Senior Member Join Date: May 2010 Location: Melbourne Australia. Posts: 2,079	Re: 46 ford with 302 39 topless, stock 1946 ford flathead approx. 100 HP. Stock 302 ohv 220 HP plus. Go figure. Regards, Kevin.

10-15-2015, 08:59 AM	#8
4t8v8 Senior Member Join Date: Nov 2011 Location: NW Arkansas Posts: 524	Re: 46 ford with 302 Isn't horsepower great. It can be whatever you want it to be. A 302 in 1969 made 220 HP. In 1975 the same engine made 120 HP. Your tax dollars at work. A stock 239 flathead makes 100HP? Yeah, right.

10-15-2015, 10:06 AM	#9
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,951	Re: 46 ford with 302 The easiest way would be to install 12V under dash gauges compatible to the 302. This includes the fuel gauge and matching fuel sender unit in your gas tank. This is worth reading. http://www.jalopyjournal.com/forum/t...-vr-88.936572/

10-15-2015, 07:59 PM	#11
clydemc Junior Member Join Date: Oct 2015 Location: kentucky Posts: 10	Re: 46 ford with 302 46 had positive ground.6 v. if you good remove backs on old gauges mount new ones in there place speedo the same lot of work. Looks stock good luck

10-15-2015, 10:03 PM	#13
Marvin/TN Senior Member Join Date: May 2010 Location: Chattanooga, TN area Posts: 832	Re: 46 ford with 302 Many years ago I put A GM engine in my 51 F-1. All I did was to switch the sending units to the GM engine and everything worked. No Voltage reducers and it was a 12 volt system. Drove the truck for about 15 years as a daily driver. I even used a GM heater blower resister to use the 6 volt heater. Picked out a coil with 7 volts reading with a VOM. The resister had to be in the air stream to keep it cool.

10-16-2015, 04:57 AM	#14
Marv Senior Member Join Date: May 2010 Posts: 875	Re: 46 ford with 302 I put a 302 in a 47 coupe and went with 12 volt. If i remember correctly there is one wire from the ignition switch that feeds all the gauges. I put a resister in the wire between the ignition switch and the gauges and everything worked fine and never had any trouble. No junk gauges under the dash.