350 no turning over?

88 s10 Blazer · 06-28-2009, 12:46 PM

The 350 that I just put into my blazer will not turn over at all. My girlfriend's dad and his friend just came over and checked it and said it could be the compression because the crank wouldnt even turn with a wrench. So we took the plugs out to relieve some compression but the motor still would not turn over. So they told me that the engine may have a spun bearing or something internal (I have no idea how this could have happened because the motor has never been turned) or the trans could be messed up since it was dropped from about 3 feet in the air onto the tail cone. Just asking here to see if you guys have had this prob and have anything else I can check. Thanks

solenoid · 06-28-2009, 01:00 PM

If it cant be turned by a socket then is more than likely internal.

AWD V8 · 06-28-2009, 01:03 PM

Was it running OK last time it ran? Don't know?... then it could be internal.

Where/how was it stored? Inside, outside, covered?

Not likely the transmission drop affected this.

If it was running OK last time, the rings are probably rusted in the cylinders. With the plugs out you should be able to turn it with a wrench on the crank pulley.

I'd spray a good amount of penetrating spray into the cylinders. Something like PB Blaster or Moovit. Let it sit for a day and try to turn it with a wrench. Just begin by working it back & forth, trying not to loosen the crank pulley bolt. When it does come loose just spin it around a few times to work the oil around. When you start it up it will smoke like crazy for a few minutes.

88 s10 Blazer · 06-28-2009, 01:12 PM

This motor has never been cranked, I was going to put it into a different blazer but I ended up not being able to get a title so I put it in this one. The motor was stored in my dads garage. I might just try to spray pb blaster in like you said just to see what happens, since its the easiest to start with. Thanks for the idea

Formulakid1 · 06-28-2009, 03:38 PM

Take the TQ converter bolts out and see if you can rotate the converter by hand, if so then its in the motor.
If you can't, try spining the motor.

firstgenon24s · 06-28-2009, 08:30 PM

I know this isnt helping bud,but you seem to have some bad luck with your motors.IIRC you were rebuilding a 305 or something right? and then u decided to doa 350 with some 305 heads or something? which motor is this one?

jarrodh · 06-28-2009, 10:42 PM

Quote: Originally Posted by solenoid

If it cant be turned by a socket then is more than likely internal.

did you check the bearing clearances when it was assembled?? did you make shure you got all the same bearings?? as a 10 under or all 20 under etc??

i had a the same prob when i was buildin mine, i somehow got a couple 20 over bearings(the crank is only 10 under) so after i had a few done up, i went to turn it and it wouldnt, so i lossened them all off and it turned, so i took it all apart, and there were 2 or 3 20 over bearings in it, they were boxed wrong.. ..

haha

88 s10 Blazer · 06-29-2009, 10:13 AM

Quote: Originally Posted by firstgenon24s

I know this isnt helping bud,but you seem to have some bad luck with your motors.IIRC you were rebuilding a 305 or something right? and then u decided to doa 350 with some 305 heads or something? which motor is this one?

I do have bad luck, this is the 350 with double hump heads.

88 s10 Blazer · 06-29-2009, 10:16 AM

Quote: Originally Posted by jarrodh

did you check the bearing clearances when it was assembled?? did you make shure you got all the same bearings?? as a 10 under or all 20 under etc??

i had a the same prob when i was buildin mine, i somehow got a couple 20 over bearings(the crank is only 10 under) so after i had a few done up, i went to turn it and it wouldnt, so i lossened them all off and it turned, so i took it all apart, and there were 2 or 3 20 over bearings in it, they were boxed wrong.. ..

haha

Yeah im sure they were all 10s and when I had all the pistons in when we built it, it turned easily with a rachet. Im thinking its got to be rusted cylinder walls or the trans.... has to be

Blmfighter · 06-29-2009, 03:51 PM

Did you put a new cam in it? If so and you when to high your valves could be hitting the pistons.

88 s10 Blazer · 06-29-2009, 03:54 PM

The cam is nearly stock =/

Formulakid1 · 06-30-2009, 01:39 AM

knock the conv. bolts loose....you might not have it seated all the way.

Wait a min....are the conv. bolts bolted up? Motor won't spin over at all right?

If they are bolted up, what has been done since they were put in?

88 s10 Blazer · 06-30-2009, 02:09 AM

Im droppin the trans tomorrow so ill check it out

88 s10 Blazer · 06-30-2009, 10:04 PM

Just dropped the trans out and the motor spins great now.... should I go with a 700r4 or th350 trans now?

Formulakid1 · 07-01-2009, 10:23 AM

I would put the 700R4 in it.

firstgenon24s · 07-01-2009, 01:35 PM

Yeah 700 for daily street strip and 350 for strip.I have a 350 in mine and it sucks for cruising decently long distances but it can be fun around town.

Paint Guy · 07-01-2009, 02:48 PM

I think you have a rod cap or two on backwards, have the caps on the wrong rods, or you have the wrong rod bearings. Been there done that on all three when I was younger. That'll do it every time. Another possibility is that you used Lubriplate or another lithium grease for assembly and then let the engine set for several weeks or months before installing it. Only saw this once, but it really happened to a friend of mine.

ka_jd7and1 · 07-01-2009, 04:36 PM

Quote: Originally Posted by Paint Guy

I think you have a rod cap or two on backwards, have the caps on the wrong rods, or you have the wrong rod bearings. Been there done that on all three when I was younger. That'll do it every time. Another possibility is that you used Lubriplate or another lithium grease for assembly and then let the engine set for several weeks or months before installing it. Only saw this once, but it really happened to a friend of mine.

He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans.

chris.niemann84 · 07-01-2009, 04:50 PM

Quote: Originally Posted by ka_jd7and1

He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans.

wow.... some people must not read or they are a really slow typer and his answer got in before he posted...... but an edit saying ooops i missed that part would have worked......LOL it's posts like those that make you stop scrolling around and go "HUH?"

88 s10 Blazer · 07-01-2009, 06:14 PM

LOL, I just picked up a used 1983 700r4 from a chevy van for $350. 90 day warranty, I think it was a good deal.. Well see :P

Chevhead89 · 07-01-2009, 10:53 PM

ya in 90 days you will be able to see whethor or not itll work. but make sure u use the Converter lockup on that one.

Paint Guy · 07-02-2009, 11:54 AM

Quote: Originally Posted by ka_jd7and1

He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans.

Yeah, guess I missed that. But hey, those other reasons are still common for new builders, right? I'll try to read each and every post more thoroughly from now on.

06-28-2009, 12:46 PM	#1
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	350 no turning over? The 350 that I just put into my blazer will not turn over at all. My girlfriend's dad and his friend just came over and checked it and said it could be the compression because the crank wouldnt even turn with a wrench. So we took the plugs out to relieve some compression but the motor still would not turn over. So they told me that the engine may have a spun bearing or something internal (I have no idea how this could have happened because the motor has never been turned) or the trans could be messed up since it was dropped from about 3 feet in the air onto the tail cone. Just asking here to see if you guys have had this prob and have anything else I can check. Thanks
	[Reply w/Quote]

06-28-2009, 01:00 PM	#2
solenoid bad s-10's brewing Age: 35 Join Date: Mar 2008 Posts: 86 Location: User is: OffLine	Re: 350 no turning over? If it cant be turned by a socket then is more than likely internal.
	[Reply w/Quote]

06-28-2009, 01:03 PM	#3
AWD V8 Registered User Age: 56 Join Date: Jan 2009 Posts: 384 Location: Vancouver, BC User is: OffLine	Re: 350 no turning over? Was it running OK last time it ran? Don't know?... then it could be internal. Where/how was it stored? Inside, outside, covered? Not likely the transmission drop affected this. If it was running OK last time, the rings are probably rusted in the cylinders. With the plugs out you should be able to turn it with a wrench on the crank pulley. I'd spray a good amount of penetrating spray into the cylinders. Something like PB Blaster or Moovit. Let it sit for a day and try to turn it with a wrench. Just begin by working it back & forth, trying not to loosen the crank pulley bolt. When it does come loose just spin it around a few times to work the oil around. When you start it up it will smoke like crazy for a few minutes.
	[Reply w/Quote]

06-28-2009, 01:12 PM	#4
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? This motor has never been cranked, I was going to put it into a different blazer but I ended up not being able to get a title so I put it in this one. The motor was stored in my dads garage. I might just try to spray pb blaster in like you said just to see what happens, since its the easiest to start with. Thanks for the idea
	[Reply w/Quote]

06-28-2009, 03:38 PM	#5
Formulakid1 10 sec. street truck!!! Age: 33 Join Date: Jul 2002 Posts: 1,472 Location: Mississippi User is: OffLine	Re: 350 no turning over? Take the TQ converter bolts out and see if you can rotate the converter by hand, if so then its in the motor. If you can't, try spining the motor.
	[Reply w/Quote]

06-28-2009, 08:30 PM	#6
firstgenon24s Registered User Age: 21 Join Date: Nov 2007 Posts: 1,691 Location: User is: OffLine	Re: 350 no turning over? I know this isnt helping bud,but you seem to have some bad luck with your motors.IIRC you were rebuilding a 305 or something right? and then u decided to doa 350 with some 305 heads or something? which motor is this one?
	[Reply w/Quote]

06-28-2009, 10:42 PM	#7
jarrodh Registered User Age: 20 Join Date: Aug 2006 Posts: 779 Location: User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by solenoid If it cant be turned by a socket then is more than likely internal. did you check the bearing clearances when it was assembled?? did you make shure you got all the same bearings?? as a 10 under or all 20 under etc?? i had a the same prob when i was buildin mine, i somehow got a couple 20 over bearings(the crank is only 10 under) so after i had a few done up, i went to turn it and it wouldnt, so i lossened them all off and it turned, so i took it all apart, and there were 2 or 3 20 over bearings in it, they were boxed wrong.. .. haha
	[Reply w/Quote]

06-29-2009, 10:13 AM	#8
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by firstgenon24s I know this isnt helping bud,but you seem to have some bad luck with your motors.IIRC you were rebuilding a 305 or something right? and then u decided to doa 350 with some 305 heads or something? which motor is this one? I do have bad luck, this is the 350 with double hump heads.
	[Reply w/Quote]

06-29-2009, 10:16 AM	#9
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by jarrodh did you check the bearing clearances when it was assembled?? did you make shure you got all the same bearings?? as a 10 under or all 20 under etc?? i had a the same prob when i was buildin mine, i somehow got a couple 20 over bearings(the crank is only 10 under) so after i had a few done up, i went to turn it and it wouldnt, so i lossened them all off and it turned, so i took it all apart, and there were 2 or 3 20 over bearings in it, they were boxed wrong.. .. haha Yeah im sure they were all 10s and when I had all the pistons in when we built it, it turned easily with a rachet. Im thinking its got to be rusted cylinder walls or the trans.... has to be
	[Reply w/Quote]

06-29-2009, 03:51 PM	#10
Blmfighter Registered User Age: 32 Join Date: May 2007 Posts: 185 Location: User is: OffLine	Re: 350 no turning over? Did you put a new cam in it? If so and you when to high your valves could be hitting the pistons.
	[Reply w/Quote]

06-29-2009, 03:54 PM	#11
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? The cam is nearly stock =/
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06-30-2009, 01:39 AM	#12
Formulakid1 10 sec. street truck!!! Age: 33 Join Date: Jul 2002 Posts: 1,472 Location: Mississippi User is: OffLine	Re: 350 no turning over? knock the conv. bolts loose....you might not have it seated all the way. Wait a min....are the conv. bolts bolted up? Motor won't spin over at all right? If they are bolted up, what has been done since they were put in?
	[Reply w/Quote]

06-30-2009, 02:09 AM	#13
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? Im droppin the trans tomorrow so ill check it out
	[Reply w/Quote]

06-30-2009, 10:04 PM	#14
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? Just dropped the trans out and the motor spins great now.... should I go with a 700r4 or th350 trans now?
	[Reply w/Quote]

07-01-2009, 10:23 AM	#15
Formulakid1 10 sec. street truck!!! Age: 33 Join Date: Jul 2002 Posts: 1,472 Location: Mississippi User is: OffLine	Re: 350 no turning over? I would put the 700R4 in it.
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07-01-2009, 01:35 PM	#16
firstgenon24s Registered User Age: 21 Join Date: Nov 2007 Posts: 1,691 Location: User is: OffLine	Re: 350 no turning over? Yeah 700 for daily street strip and 350 for strip.I have a 350 in mine and it sucks for cruising decently long distances but it can be fun around town.
	[Reply w/Quote]

07-01-2009, 02:48 PM	#17
Paint Guy Registered User Join Date: Jun 2009 Posts: 28 Location: OKC User is: OffLine	Re: 350 no turning over? I think you have a rod cap or two on backwards, have the caps on the wrong rods, or you have the wrong rod bearings. Been there done that on all three when I was younger. That'll do it every time. Another possibility is that you used Lubriplate or another lithium grease for assembly and then let the engine set for several weeks or months before installing it. Only saw this once, but it really happened to a friend of mine. Last edited by Paint Guy : 07-01-2009 at 02:49 PM.
	[Reply w/Quote]

07-01-2009, 04:36 PM	#18
ka_jd7and1 is a fungineer Age: 24 Join Date: Jun 2005 Posts: 4,142 Location: Bakersfield, CA User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by Paint Guy I think you have a rod cap or two on backwards, have the caps on the wrong rods, or you have the wrong rod bearings. Been there done that on all three when I was younger. That'll do it every time. Another possibility is that you used Lubriplate or another lithium grease for assembly and then let the engine set for several weeks or months before installing it. Only saw this once, but it really happened to a friend of mine. He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans.
	[Reply w/Quote]

07-01-2009, 04:50 PM	#19
chris.niemann84 NebraskaHillbilly Age: 25 Join Date: Jun 2009 Posts: 13 Location: Oklahoma City, OK User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by ka_jd7and1 He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans. wow.... some people must not read or they are a really slow typer and his answer got in before he posted...... but an edit saying ooops i missed that part would have worked......LOL it's posts like those that make you stop scrolling around and go "HUH?"
	[Reply w/Quote]

07-01-2009, 06:14 PM	#20
88 s10 Blazer EAT ME Age: 19 Join Date: Jan 2008 Posts: 506 Location: Gadsden, AL-Indianapolis, IN User is: OffLine	Re: 350 no turning over? LOL, I just picked up a used 1983 700r4 from a chevy van for $350. 90 day warranty, I think it was a good deal.. Well see :P
	[Reply w/Quote]

07-01-2009, 10:53 PM	#21
Chevhead89 Registered User Join Date: Aug 2008 Posts: 490 Location: Cocoa, Fl User is: OffLine	Re: 350 no turning over? ya in 90 days you will be able to see whethor or not itll work. but make sure u use the Converter lockup on that one.
	[Reply w/Quote]

07-02-2009, 11:54 AM	#22
Paint Guy Registered User Join Date: Jun 2009 Posts: 28 Location: OKC User is: OffLine	Re: 350 no turning over? Quote: Originally Posted by ka_jd7and1 He already solved the problem...... he had dropped the transmission on the tailshaft and messed something up internally, motor spins when not connected to the bad trans. Yeah, guess I missed that. But hey, those other reasons are still common for new builders, right? I'll try to read each and every post more thoroughly from now on.
	[Reply w/Quote]