How can I tell what year engine I have?
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Currently: 96 4wd XCab, 85 2wd S15 XCab, 82 2wd lwb Sport, 95 2wd Jimmy w/95 LT1
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You have casting numbers there, not the machined pad with stampings, of course. I ran into this post, below, has the block numbers you showed above. Might help.
www.s10forum.com
block cast #
Hey Hey whats up i am working on a 93 gmc sonoma i have a 2.8 ok i called the parts store. to find out if this motor this guy has will work i am looking for a replacement motor for the 2.8 the 93 has a block cast #695 and 89-92 have block cast numbers 457 and 695 i am wanting to know i i have to...
www.s10forum.com
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thank you. Where can I find the machined pad with stampings? Thanks.You have casting numbers there, not the machined pad with stampings, of course. I ran into this post, below, has the block numbers you showed above. Might help.
block cast #
Hey Hey whats up i am working on a 93 gmc sonoma i have a 2.8 ok i called the parts store. to find out if this motor this guy has will work i am looking for a replacement motor for the 2.8 the 93 has a block cast #695 and 89-92 have block cast numbers 457 and 695 i am wanting to know i i have to...
Currently: 96 4wd XCab, 85 2wd S15 XCab, 82 2wd lwb Sport, 95 2wd Jimmy w/95 LT1
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As you saw further down in that thread I linked above, the number you showed is the part number of the raw cast block, cast in just like the date code, before machining. The machined number is what would have one of those three letter codes and maybe a date (and maybe a portion of vin in some years). That machined pad and the stampings should be either where you had encircled the blue on an earlier post, or close to this block casting number we're talking about now. The stampings can be faint, but they will be there somewhere. Do you have reason to think the heads are not original to that block? The casting date in the area of the rockers should be clear to see if you get a cover off, and that would confirm a date.
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I will go look some more. Im hoping for a large journal crank that is internally balanced. If the engine isnt damaged maybe it will be enough for my needs as a reliable and cool work truck. But I need to know what it is so I can buy parts like a starter motor which it needs. I want to know what water pump to use. The truck was totally boogered up so I have no idea how its supposed to be. I have no frame of reference. water pump rotation, starter motor, flywheel (neutral or externall balanced), and my truck is 4x4 so I dont know if i have the right oil pan, oil pump or front timing cover. I plan to use the stock manifold with a webber carb instead of the eddelbrock and holley set up which i thought about buying while i still can so when i find a 3.4 i can just transfer it over. Not looking to build any kind of race truck. So i need to know what i have in there and what shape its in. Well i guess ill go out there now and see if i cna find that number. I will look under the valve cover also see if I can find any clues. Does the intake number have any date on it? I see an 87 on it, is that the year of the intake manifiold?
I think you’re overthinking it. Small crank, large crank, who cares? It’ll last if taken care of.
You have all the belts, so you have a CW water pump.
Flywheel can be resurfaced if you’re replacing the clutch. Wait until you actually pull the transmission on that one.
I’d suggest to simply un-booger what you have. It shouldn’t be difficult. Compression test the motor first to see if it’s even worth your while.
Edit: why are your rockers every which way but proper?!?!??!
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You have all the belts, so you have a CW water pump.
Flywheel can be resurfaced if you’re replacing the clutch. Wait until you actually pull the transmission on that one.
I’d suggest to simply un-booger what you have. It shouldn’t be difficult. Compression test the motor first to see if it’s even worth your while.
Edit: why are your rockers every which way but proper?!?!??!
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those rockers are on a head that lives under my workbench. it is from the original engine. I just wanted to see what the date code said it was on a known date head. what does CW mean?
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so theres the date code off the head that is on the engine. it ends in 3 so Im guessing its 83 or 93. Could it be a 1983 if the mechanical fuel pump area is not fully machined for a mechanical fuel pump? Is it safe to conclude that its a 93?
Generally, CW is the opposite of CCW (CCW = counter clock wise, CW = clock wise). And, if you keep accumulating casting numbers, you may need to start an Excel spread sheet to keep track of all of them.
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Im trying to figure out if they have any meaning in my search to find out what year and model / options the engine was originally built for. Ive been looking for the engine serial number but I cannot find it so far.. Are all passenger side starters the same for all years of 2.8, 3.1, 3.4 I really dont know what I have. I need to buy a starter. Also, clockwise meaning looking at the pump from the front or from the drivers seat? Because the fan also has to spin the right way to pull air throught the radiator. I dont know whats original on this car or whats stock. Thats why I have to go over everything and I cant assume that anything is the right part.
Currently: 96 4wd XCab, 85 2wd S15 XCab, 82 2wd lwb Sport, 95 2wd Jimmy w/95 LT1
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(I just got in off the road, haven't read all that was posted since 3 days ago, so be patient.)
The engine block casting part number you pictured was 10065457; If you look at the thread I linked from 2010 (block cast #), it states that that block casting part number is one of three known for a large journal (see post #7), so they are confirming that you have the larger journal. Check that out if you haven't.
Now we see the newer photo of the cylinder head casting date that you just posted shows "11F3", which to me states it was cast June 11, 83 or 93, in your case likely '93.The block casting date you had shown earlier had looked like "10E3", but casting often mutilates the date, and it may actually have been an F, not an E, it's easy to mis-read it, hence actually "10F3", which states it is likely a '93 cast block, cast within a day of the cylinder head. So, that would confirm, in my mind, based on all your other info too, that you have a block and head that were both cast in '93.
The engine block casting part number you pictured was 10065457; If you look at the thread I linked from 2010 (block cast #), it states that that block casting part number is one of three known for a large journal (see post #7), so they are confirming that you have the larger journal. Check that out if you haven't.
Now we see the newer photo of the cylinder head casting date that you just posted shows "11F3", which to me states it was cast June 11, 83 or 93, in your case likely '93.The block casting date you had shown earlier had looked like "10E3", but casting often mutilates the date, and it may actually have been an F, not an E, it's easy to mis-read it, hence actually "10F3", which states it is likely a '93 cast block, cast within a day of the cylinder head. So, that would confirm, in my mind, based on all your other info too, that you have a block and head that were both cast in '93.
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1993. So the previous owner must have used the 1985 cover to fit the 1984 4x4 oil pan. The odd thing is the belts are hybrid. I also noticed there is a externally balanced flywheel on the engine! What do you make of that? Thanks for the help
The style of timing cover used would dictate what drive system and water pump used. The serpentine belt setup rotates opposite of what the older "Vee" belts do. So if you were to use the newer timing cover, you'd use a water pump meant for serpentine belts and you'd also have to use the correct fan clutch and fan.
When you fire up the engine, you can easily check and see if the fan is running the right way, it should be sucking air into the grille and blowing it out towards the engine. If it's blowing air out the grille, obviously a No No!
Starter-wise, all the RWD Cast-Iron-Head blocks that aren't FWD-deriviative (like the misfit in my '90 Trooper) take a passenger's side starter. If you want a year to look up, go to Rockauto.com and look up one for a '90.
My Trooper has the starter on the driver's side which is FWD configuration, so it's a bit of a strange cat, same as the early-90's 3.1 TBI Minivans (Lumina APV, Olds Silhouette, Pontiac TransPort). IIRC so did the Fiero 2.8.
Don't forget starter shims, you may need them if there aren't any for the current starter. If there are shims, I'd start out with what was there. If you need more, they're the same as used in a Small Block Chev V8. You're generally gonna need a certain amount of shimming to make sure the starter gear isn't too deep into the flywheel ring gear; if it is, it can make a lot of noise, bind up badly, or become jammed.
Autozone carries a universal set that should fit:
And a set at Amazon:
When you fire up the engine, you can easily check and see if the fan is running the right way, it should be sucking air into the grille and blowing it out towards the engine. If it's blowing air out the grille, obviously a No No!
Starter-wise, all the RWD Cast-Iron-Head blocks that aren't FWD-deriviative (like the misfit in my '90 Trooper) take a passenger's side starter. If you want a year to look up, go to Rockauto.com and look up one for a '90.
My Trooper has the starter on the driver's side which is FWD configuration, so it's a bit of a strange cat, same as the early-90's 3.1 TBI Minivans (Lumina APV, Olds Silhouette, Pontiac TransPort). IIRC so did the Fiero 2.8.
Don't forget starter shims, you may need them if there aren't any for the current starter. If there are shims, I'd start out with what was there. If you need more, they're the same as used in a Small Block Chev V8. You're generally gonna need a certain amount of shimming to make sure the starter gear isn't too deep into the flywheel ring gear; if it is, it can make a lot of noise, bind up badly, or become jammed.
Autozone carries a universal set that should fit:
And a set at Amazon:
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what is the name of this book? its really comprehensive!! I would like to get a hard copy if you know the title and author I would appreciate that thanks.See this old post, particularly Post #11
Here's PDF with similar, but more detailed info. See page 8 about cranks.60*V6 Parts swapping: What Fits and How.
So the forum ate my first thread on swapping parts and all the questions that get asked all the time here. I'll try again.
Hopefully you have an 88 up engine.
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