I'm in the process of getting a 1990 Chevy C1500 with a 350 from a guy that owes me money. Am I right in thinking this engine is roller can, and therefore ok with the current crop of SN motor oils?
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1990 Chevy pickup 350 ci
- Thread starter Stelth
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I have this truck. Flat tappet. But the cam and valve train is very non-aggressive.
You can run diesel oil.....Rotella if you want. Or add zinc, if it makes you sleep better....like me.
I dont think it's really needed tho.
How many miles on the truck? I have tons of experience fixing up mine. Hit me up anytime.
You can run diesel oil.....Rotella if you want. Or add zinc, if it makes you sleep better....like me.
I dont think it's really needed tho.
How many miles on the truck? I have tons of experience fixing up mine. Hit me up anytime.
Yup non roller cam. Those don't have cam wear problems. I've seen many with over 300+k on them.
Sounds like a good candidate for QS Defy.
Dont worry about it. The stock cam is well broke i n by now and it doesn't need high zinc and phosphorus levels.
But I would run defy anyway.
But I would run defy anyway.
Depending on the condition, mileage, etc. of the engine, you can probably run just about anything in it.
There are a few things I'd look at right away when you take possession of it.
1.) pull the PCV hose off the front of the throttle body and make sure there is a lot of vacuum at that port/nipple. Also, check and make sure your PCV valve is operational.
2.) look into the oil filler cap, and run your finger along the rocker arm towards the fire wall....see what you find as far as sludge/crusty oil goes.
3.) is there evidence of antifreeze pooling at the top of the intake? Take it out for a run and shut it off and look under the hood 10 minutes later and look for anti-freeze leaks around the intake.
4.) New plugs, wires, cap, and rotor are cheap. Good place to start anyways.
5.) while idling, push the EGR valve open with your finger and make sure the truck stumbles.
6.) Rebuilding the throttle body and cleaning up the injectors is cheap and takes a few hours at most. Most of these trucks need it done. is there a new cone spray pattern on the butterflies when idling? Cone pattern is optimal. Is there fuel dripping out of an of an injector(s) while idling? This indicates new injectors or cleaning is needed.
These old 350's love heavier oils and they seem to respond well to MMO and Kreen.
Keep us posted.
There are a few things I'd look at right away when you take possession of it.
1.) pull the PCV hose off the front of the throttle body and make sure there is a lot of vacuum at that port/nipple. Also, check and make sure your PCV valve is operational.
2.) look into the oil filler cap, and run your finger along the rocker arm towards the fire wall....see what you find as far as sludge/crusty oil goes.
3.) is there evidence of antifreeze pooling at the top of the intake? Take it out for a run and shut it off and look under the hood 10 minutes later and look for anti-freeze leaks around the intake.
4.) New plugs, wires, cap, and rotor are cheap. Good place to start anyways.
5.) while idling, push the EGR valve open with your finger and make sure the truck stumbles.
6.) Rebuilding the throttle body and cleaning up the injectors is cheap and takes a few hours at most. Most of these trucks need it done. is there a new cone spray pattern on the butterflies when idling? Cone pattern is optimal. Is there fuel dripping out of an of an injector(s) while idling? This indicates new injectors or cleaning is needed.
These old 350's love heavier oils and they seem to respond well to MMO and Kreen.
Keep us posted.
Originally Posted By: Stelth
I'm in the process of getting a 1990 Chevy C1500 with a 350 from a guy that owes me money. Am I right in thinking this engine is roller can, and therefore ok with the current crop of SN motor oils?
Originally Posted By: KD0AXS
Sounds like a good candidate for QS Defy.
QS DEFY is what was coming to mind while reading the post/replys
I'm in the process of getting a 1990 Chevy C1500 with a 350 from a guy that owes me money. Am I right in thinking this engine is roller can, and therefore ok with the current crop of SN motor oils?
Originally Posted By: KD0AXS
Sounds like a good candidate for QS Defy.
QS DEFY is what was coming to mind while reading the post/replys
Stelth
Thread starter
Originally Posted By: Phishin
Depending on the condition, mileage, etc. of the engine, you can probably run just about anything in it.
There are a few things I'd look at right away when you take possession of it.
1.) pull the PCV hose off the front of the throttle body and make sure there is a lot of vacuum at that port/nipple. Also, check and make sure your PCV valve is operational.
2.) look into the oil filler cap, and run your finger along the rocker arm towards the fire wall....see what you find as far as sludge/crusty oil goes.
3.) is there evidence of antifreeze pooling at the top of the intake? Take it out for a run and shut it off and look under the hood 10 minutes later and look for anti-freeze leaks around the intake.
4.) New plugs, wires, cap, and rotor are cheap. Good place to start anyways.
5.) while idling, push the EGR valve open with your finger and make sure the truck stumbles.
6.) Rebuilding the throttle body and cleaning up the injectors is cheap and takes a few hours at most. Most of these trucks need it done. is there a new cone spray pattern on the butterflies when idling? Cone pattern is optimal. Is there fuel dripping out of an of an injector(s) while idling? This indicates new injectors or cleaning is needed.
These old 350's love heavier oils and they seem to respond well to MMO and Kreen.
Keep us posted.
Thanks. This engine was apparently rebuilt in the not-to-distant past. The guy who has the truck now says he has the invoice, so I'll see what all was done, and when. When you say that these engines like "heavier" oils, do you mean like 10w-40? I'm thinking Defy might be a good oil for this one, like KD0XS recommended.
Depending on the condition, mileage, etc. of the engine, you can probably run just about anything in it.
There are a few things I'd look at right away when you take possession of it.
1.) pull the PCV hose off the front of the throttle body and make sure there is a lot of vacuum at that port/nipple. Also, check and make sure your PCV valve is operational.
2.) look into the oil filler cap, and run your finger along the rocker arm towards the fire wall....see what you find as far as sludge/crusty oil goes.
3.) is there evidence of antifreeze pooling at the top of the intake? Take it out for a run and shut it off and look under the hood 10 minutes later and look for anti-freeze leaks around the intake.
4.) New plugs, wires, cap, and rotor are cheap. Good place to start anyways.
5.) while idling, push the EGR valve open with your finger and make sure the truck stumbles.
6.) Rebuilding the throttle body and cleaning up the injectors is cheap and takes a few hours at most. Most of these trucks need it done. is there a new cone spray pattern on the butterflies when idling? Cone pattern is optimal. Is there fuel dripping out of an of an injector(s) while idling? This indicates new injectors or cleaning is needed.
These old 350's love heavier oils and they seem to respond well to MMO and Kreen.
Keep us posted.
Thanks. This engine was apparently rebuilt in the not-to-distant past. The guy who has the truck now says he has the invoice, so I'll see what all was done, and when. When you say that these engines like "heavier" oils, do you mean like 10w-40? I'm thinking Defy might be a good oil for this one, like KD0XS recommended.
I'd run maxlife in this 350. I have had good luck when I switched to it in my 350.
Originally Posted By: Stelth
When you say that these engines like "heavier" oils, do you mean like 10w-40? I'm thinking Defy might be a good oil for this one
Since you said this might be a recent rebuild, then if it really has new rings, piston, honing, bearings, etc., then I'd stick with 5w30.
If this engine consumes oil (which is likely), you can start with 5w30 and begin topping it off with a 40 weight and see if you notice any improvements in start up rattles, knocks, etc.
You'll likely get just as good of results with QS Defy as you will with SuperTech, Castrol GTX, VWB, PYB, etc. Run what you want. My engine is fairly worn out, so I usually start with a 10w40 on the initial OC, and then top off with 10w40's or 20w50.
When you say that these engines like "heavier" oils, do you mean like 10w-40? I'm thinking Defy might be a good oil for this one
Since you said this might be a recent rebuild, then if it really has new rings, piston, honing, bearings, etc., then I'd stick with 5w30.
If this engine consumes oil (which is likely), you can start with 5w30 and begin topping it off with a 40 weight and see if you notice any improvements in start up rattles, knocks, etc.
You'll likely get just as good of results with QS Defy as you will with SuperTech, Castrol GTX, VWB, PYB, etc. Run what you want. My engine is fairly worn out, so I usually start with a 10w40 on the initial OC, and then top off with 10w40's or 20w50.
Originally Posted By: KD0AXS
Sounds like a good candidate for QS Defy.
I agree, pretty good trucks back in the day.
Sounds like a good candidate for QS Defy.
I agree, pretty good trucks back in the day.
Originally Posted By: HM12460
I agree, pretty good trucks back in the day.
Pretty good truck, still to this day.
Our trucks are 23 years old. It hauls my 20' heavy fiberglass boat down the road with no problem while getting 14 mpg's.....not bad considering 23 year old technology.
It has 4-wheel drive that works flawlessly. My 14 bolt SF rear axle is nearly undestructible. The engine and EASY to trouble shoot and work on. The Chevy 350 is legendary.
I agree, pretty good trucks back in the day.
Pretty good truck, still to this day.
Our trucks are 23 years old. It hauls my 20' heavy fiberglass boat down the road with no problem while getting 14 mpg's.....not bad considering 23 year old technology.
It has 4-wheel drive that works flawlessly. My 14 bolt SF rear axle is nearly undestructible. The engine and EASY to trouble shoot and work on. The Chevy 350 is legendary.
I just got rid of my '93 in the Spring. I used to run Esso XD-3 HDEO, 0W30 (due to our cold winters). It seemed to do well on it and had very little consumption even at close to 250K miles. If you aren't in a cold area, I'd run a HDEO in 10W30. I ran this in my truck for a while and it worked well. The flat tappet cam will like it and generally HDEO oils are "thicker 30 weights" which these engines seem to like.
Regardless, the old 350 TBI's might not be the fastest, but they do run forever. I have seen more GM 350 TBI trucks with ridiculous miles than the other trucks put together.
Regardless, the old 350 TBI's might not be the fastest, but they do run forever. I have seen more GM 350 TBI trucks with ridiculous miles than the other trucks put together.
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