My LM7 build into a 1994 Silverado
#42
In-Zane Moderator
iTrader: (25)
Did you still leave all the other wires pluged in to the fuel pump relay? Or did you just cut the gray wire and run the 12v off of the fuse box to the gray wire? For some reason I see myself screwing this simple thing up and messing up my fuel pump, sorry for all the questions.
#43
Thanks Zone, i'm going to try it around 2pm today and see if it works. I realized I have to get a smaller belt now because I used my old alternator. Hopefully I can find that today.
#45
If your using the stock in tank pump just leave all the relays and stuff alone. Adapt the oil pressure gauge sender. Get a holley regulator use the lower port as the inlet from the stock pump. Route one of the side ports to the carb and route the other to the return line. The trick is to put a restriction in the return side and drill a 1/16" hole in it to limit the amount of fuel returning to cool the pump and bleed of pressure. Then just set with a pressure guage to 6.5 PSI.
#46
I got my stock belt to work, was looking at it the wrong way. I have a holley billet fuel pressure regulator with a return line that I am using. I drove the truck this morning, I got about a mile before the temp got up to around 220F. Either the thermostat is stuck or my radiator lines are crossed. I used my stock 1994 radiator. I am on a 24hr shift today so tomorrow I will give it another shot.
#48
I looked at some set ups today and realized i crossed the radiator lines, easy fix. I will try to fix that tomorrow. Man what a different feeling it is driving a vehicle with a mild stall converter. I can't wait to fix the bugs and get my SLP Loudmouth II's welded up.
#53
The carb is a used 4160 style 750cfm vacuum secondary that I sent out and had completly rebuilt and converted to a 4150 style carb. They tuned it according to all the specs I had on my truck. I pulled two plugs and noticed that it is very rich, so it must be flooding the engine over 3200 rpm. tomorrow I will lower the PSI on the carb to 6 and try it again.
#59
I messed with the carb a bit today and noticed my accelerator pump is very stiff, I took the bottom off and everything is in its place and the spring is fine. I think the port might be clogged up. I am going to try and pull it all apart tomorrow or tuesday and figure it out.
#60
On The Tree
Join Date: Sep 2010
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