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Black Oil

26 messages,  Last post on Sep 14, 2007 at 4:23 PM

You are in the Speed Shop Tuning and Modification Forum.

What is this discussion about? Chevrolet S-10, Performance Mods

Messages Page 1 of 3

#1 of 26 BLACK OIL by drcarp

Sep 02, 2007 (9:21 am)

I HAVE A 350 IN A 1986 S10 AND THE OIL IS A BLACK 500 MILES AFTER AN OIL CHANGE. THE TRUCK IS GEARED FOR 3000 RPM AT 60 MPH. THE MOST I DRIVE IS 16 MILES TO THE GOLF COURSE AND 5 OF THAT IS AT 60 MPH. THE REST IS IN TOWN. GAS MILEAGE IS 8 MPG. THE ENGINE IS RUNNING ABOUT 350 HP. WHERE IS THE CARBON COMING FROM TO DARKEN THE OIL. I CHANGE THE OIL VERY FREQUENTLY.

#2 of 26 Re: BLACK OIL [drcarp] by paisan

Sep 02, 2007 (11:23 am)

Replying to: drcarp (Sep 02, 2007 9:21 am)
Well my guess is that the tuning on the 350 in an S10 would be fairly aggressive, since the S10 was not offered with a 350 from the factory. Seems like it may be overheating.
 
-mike

#3 of 26 Re: BLACK OIL [paisan] by drcarp

Sep 02, 2007 (2:07 pm)

Replying to: paisan (Sep 02, 2007 11:23 am)
THANKS FOR THE REPLY MIKE
THE TEMP.IS A LITTLE WARM AT START UP BUT ALWAYS RUNS 180-190 ON TEMP. GUAGE.
K.C.

#4 of 26 Re: BLACK OIL [drcarp] by hoodlatch

Sep 02, 2007 (6:12 pm)

Replying to: drcarp (Sep 02, 2007 2:07 pm)
Temp sounds great to me. Does the carb run rich or does it over-flow when you shut it down? After it sets for a few hours do you have to pump the accelerator several times to get it to fire up? I use to have a 350R with a four barrow that when I turned it off the carb would drain down allowing the gas to wash down the pistons and cylinders.
 
Did you ever think about changing the ring and pinion to get better fuel mileage? Good luck

#5 of 26 Re: BLACK OIL [drcarp] by okko1

Sep 02, 2007 (7:59 pm)

Replying to: drcarp (Sep 02, 2007 9:21 am)
what kind of carb are useing and what kinda air cleaner. sounds like a 3.73 gear. a 700r would help some on fuel. carburation equals carbon tell use more about the age and condition of the engine. does this engine use oil.

#6 of 26 Re: BLACK OIL [hoodlatch] by drcarp

Sep 03, 2007 (3:07 am)

Replying to: hoodlatch (Sep 02, 2007 6:12 pm)
the carb may be rich but it starts without touching the accelerator. Rear end change may be an option later
thanks for the reply
k.c.

#7 of 26 Re: BLACK OIL [okko1] by drcarp

Sep 03, 2007 (3:16 am)

Replying to: okko1 (Sep 02, 2007 7:59 pm)
Carb is Edelbrock 1406 600 cfm electric choke. air cleaner is large 13-14" x 3 round no brand name. engine is about 3 years old since rebuild with 20 k miles engine doesn't use oil
thanks for the reply
k.c.

#8 of 26 Re: BLACK OIL [drcarp] by okko1

Sep 03, 2007 (6:38 am)

Replying to: drcarp (Sep 03, 2007 3:16 am)
thats a very good carb. is this an egr motor

#9 of 26 Re: BLACK OIL [okko1] by drcarp

Sep 03, 2007 (11:44 am)

Replying to: okko1 (Sep 03, 2007 6:38 am)
No erg no smog no converter
headers and dual exhaust
thanks for the reply
K.C.

#10 of 26 Re: BLACK OIL [drcarp] by hoodlatch

Sep 03, 2007 (1:54 pm)

Replying to: drcarp (Sep 03, 2007 11:44 am)
From the sound of things I wouldn't touch a thing. It seems your got it right where you want it.

Messages Page 1 of 3

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