8x Series V8 Swaps

Joined
Oct 12, 2009
Messages
108
Location
abbotsford bc
I have windstar fans on mine right now that do a great job of keeping it cool but hate how much current they draw. I'd like to go back to the clutch fan at some point.
 
Joined
Nov 6, 2006
Messages
919
That’s basically my understanding as well, GM signal is wrong. I’ll tackle the tach someday, currently still trying to get the speedo to work (speedo should have been straightforward, so I’m stumped)
 
Joined
Oct 12, 2009
Messages
108
Location
abbotsford bc
Did you ground the brown and white wires with black stripe coming out of the t-case harness? That was my issue with my '97's speedo. The tach on my '97 was easy with the dakota box using the black wire with silver bands that went to the toyota PCM
 
Joined
Nov 6, 2006
Messages
919
Did you ground the brown and white wires with black stripe coming out of the t-case harness? That was my issue with my '97's speedo. The tach on my '97 was easy with the dakota box using the black wire with silver bands that went to the toyota PCM
Yup, those wires grounded. The CDL & elockers all work. Tested the three wires to the sending unit, one gets 12v, one is grounded, and the other presumably sends the signal back to the combination meter. I beeped it out all the way to the glovebox, but don’t think I can actually test for a signal while diving. Replaced the sending unit on the tcase. I’ve got two more things to try: is the speedo gauge in the combination meter grounded? And dig a little deeper in the tcase to check that the sending unit is properly engaging.

But to the bright side, waiting for amazon on Friday, but 99% sure I have a solution to get backup lights, and PRND12 display on the dash.
 
Joined
Jan 6, 2012
Messages
7,278
I have windstar fans on mine right now that do a great job of keeping it cool but hate how much current they draw. I'd like to go back to the clutch fan at some point.
The nice thing about the LS is that it's easy to upgrade the alternator for more power if necessary. I thought about electric but decided to go mechanical for simplicity. I do have a electric pusher for when the AC is on.
 
Joined
Feb 11, 2011
Messages
489
Location
Milwaukee
Working on my fan shroud. Without the shroud motor runs fine but I think it will help in the summer, especially in pulling air for the condenser at slow speeds. So far I'm getting about 16mpg in town if I take it easy. If I romp on it in town a lot mileage tanks to around 13. Haven't figured highway mpg numbers yet. View attachment 1940768
Did you noticed high temperature Without the shroud? I want to remove my shroud to see if i get better airflow on the freeway. I want to see more air movement under the hood. Seems like with shroud the air is bouncing back off it on speeds over 50 MPH.
so i m also adding extreme duty fan clutch and hood scoop
i m not having problems with overheating but don't like to see 210-215 F on freeway
 
Joined
Jan 6, 2012
Messages
7,278
I have not noticed a temperature change. I added the shroud for 2 reasons, 1 my radiator hose was bouncing really close to the fan, 2 it should keep the condenser cooler at slow speeds. I was having temp issues because of a messed up thermostat and air in the system. Are you filling Coolant into the upper radiator hose first? 1 think I'm running around 190 to 200. I also added a Coolant H in the heater hoses as that's supposed to aid Coolant flow.
Did you noticed high temperature Without the shroud? I want to remove my shroud to see if i get better airflow on the freeway. I want to see more air movement under the hood. Seems like with shroud the air is bouncing back off it on speeds over 50 MPH.
so i m also adding extreme duty fan clutch and hood scoop
i m not having problems with overheating but don't like to see 210-215 F on freeway
 
Joined
Feb 11, 2011
Messages
489
Location
Milwaukee
i ' m running volvo expansion tank and i also fill the cooling system thru the tank
and i ' m running suzuki vitara 14 " electrical fan to keep the condenser cool in summer and my a/c is like being in fridge at idle
 
Joined
Jan 6, 2012
Messages
7,278
i ' m running volvo expansion tank and i also fill the cooling system thru the tank
and i ' m running suzuki vitara 14 " electrical fan to keep the condenser cool in summer and my a/c is like being in fridge at idle
If your shroud is really shallow I could see how air could be bouncing off of it as u say. My shroud is 2" deep before the fan. A guy at work has a LS with a shallow shroud. His LS overheats
 
Joined
Feb 11, 2011
Messages
489
Location
Milwaukee
If your shroud is really shallow I could see how air could be bouncing off of it as u say. My shroud is 2" deep before the fan. A guy at work has a LS with a shallow shroud. His LS overheats
i do not have overheating problem but just can't get over it running at 210 F heaven'S people telling me it is normal
how far back did you move your engine because i do not have that much room between fan and radiator
 
Joined
Jun 6, 2016
Messages
456
Location
Magna, UT
i do not have overheating problem but just can't get over it running at 210 F heaven'S people telling me it is normal
how far back did you move your engine because i do not have that much room between fan and radiator
I was going to say...isn't 210 the desired operating temp for these engines?
 
Joined
Nov 7, 2012
Messages
564
Location
Edmonton, Alberta
210 is the desired operating temp for an LS it's normal, run 18-20 psi rad cap and don't worry about it

All else fails change the tstat to a 190 , hell have you checked tstat to know what it's set for?
 
Joined
Feb 11, 2011
Messages
489
Location
Milwaukee
i have 187 F thermostat
i just found legit GM water pump and it has 187 F thermostat already installed i guess it is standard for 2007 5.3
 
Top Bottom