i hate my truck..... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67ChevyC10Stepside · 12-16-2004, 01:10 PM

a couple nights ago i went out to adjust the valves and got it runnin decent so ran it up to like 2 grand for a little bit to warm it up good then let it idle at right about 1050-1100... it sat there for a while then it stalled and right after it stalled...the bottom radiator hose comes flieing off shooting however many gallons of hot antifreeze everywhere. what would cause that? i know the clamp was on tight because i checked it a couple nights ago. every time i fix one thing another one sh#$s out. im about ready to do this to it.

**JIMs70GMC** · 12-16-2004, 01:24 PM

Thermostat never opened?

67ChevyC10Stepside · 12-16-2004, 01:30 PM

it dont have one.....and the coolant was just barely hot enough that i wouldnt stick my hand in it for a while....i could touch it for a little bit though.

*Randy70C-10* · 12-16-2004, 01:34 PM

Hmmm, I know that you said it was tight but the only thing that would make it come off like that is it wasn't tight enough. I can't think of any other reason.

ckhd · 12-16-2004, 01:33 PM

Yeah, sounds like a cooling issue to me. Thermostat is the first to look at, maybe a 37 year old radiator, maybe crud in the water jackets of the block, maybe the water pump...

400 small blocks run a little hotter anyway because of the siamese cyliders.

You could ship it to me and then you wouldn't have to worry about it anymore!

ckhd · 12-16-2004, 01:35 PM

Oh, didn't see your last post, my first guess would be a bad fit on the hose. Maybe it's a little big and even though the clamp was tight, it wasn't actually tight. Maybe the hose is too short and the tension pulling on it helped work it off...

Just where I'd start.

RAT-AT-TACH · 12-16-2004, 01:38 PM

is it a new clamp?
if not put a new one on.

stelth2002 · 12-16-2004, 02:07 PM

Could you have blown a head gasket? I wouldnt think so, but i know some bigger engines will blow the radiator hose off when they break a head gasket internally.

LT4XTREME · 12-16-2004, 03:01 PM

(quote) I hate my truck.. Sir put the wrench and hammer down and step away from the truck! Sir I said step away from the truck! j/k Hope you get it figured out. I would think that it takes a good bit of pressure to just blow a hose off. Why did you need to adjust the valves? Was it running real bad? Did it start running bad all at once? Is there a chance that it blew a head gasket and is pressurizing the cooling system?

Brainchild · 12-16-2004, 10:32 PM

Quote:

Originally Posted by stelth2002

Could you have blown a head gasket? I wouldnt think so, but i know some bigger engines will blow the radiator hose off when they break a head gasket internally.

I was thinking the same thing,I hjad my old Nova shoot the bottom hose off like that.I double clamped it,and it wold blow water about 4 feet out the top of the rad with the cap off.
It had a blown head gasket.On a good note,both the heads,and block were in fine shape,and didn't even need surfacing

rambler · 12-16-2004, 03:20 PM

I was thinking the same thing as stelth, I had a cougar that did the same thing, blew off the lower raditor hose,, then the raditor blew a leak,, finally found out it had a blown headgasket,, (it really didnt blow white smoke out the tailpipe till later),, the pressure of the leak blew off the hose, parked it now the engine is water locked...

67ChevyC10Stepside · 12-16-2004, 07:55 PM

here it is the head gaskets are new......everything except the block is new.

dwaite72lnghrn · 12-16-2004, 08:38 PM

Personally I never could get them tight with a screw driver always use a ratchet and never had a problem. I would turn them tight as I could with a driver and the ratchet will always get them tighter. If the head gasket went I would expect it to be hot even with out a thermostat, and I would expect it to blow when he had the rpms up on it. Put it back on and run it again and see what happens. With no thermostat it will never really heatup around here.

GMC AMI · 12-16-2004, 09:22 PM

With no thermostat will cause overheating on some engines due to coolant flowing too fast to cool off in the radiator. I would suggest installing one correct for the season.

68w/sbc406 · 12-16-2004, 09:42 PM

when i did my engine swap i kept getting leaks on the lower hose, w couldnt get the worm drive style rad hose clamp tight enough, i striped out 2 of them. then i went to napa and got s different style and the problem was gone. i reefed the $h!+ out of them and no more leaks, something you might want to try

67ChevyC10Stepside · 12-16-2004, 10:30 PM

well i think it's the head gasket.....it ran like sh@% blows smoke and has pressure in the hose.....i tried to get that rad hose off for like 35 minutes the other night....i pulled it yanked it tried twisting it used a screwdriver a hammer everything and it wouldnt budge so i said screw it and put the clamp back on. then it blew itself off...the fin truck hates me.

67ChevyC10Stepside · 12-16-2004, 10:59 PM

the heads have been decked already and the block is a virgin block in real real nice shape so i should be good for that....how much do 400 head gaskets run? anyone know? it's been a while since i bought these. this kinda pisses me off though...:'(

68w/sbc406 · 12-17-2004, 01:13 AM

i bought mine for $16.95 a side (felpro) might be a dumb question, but, are you sure that the head gaskets were for a sb400 and not a 350, cause then you would block the steam holes, but i think you knew that iirc from other conversations

spencra · 12-17-2004, 01:24 AM

Ahh yes, Our trucks, it is a love hate relationship.

Sorry, I have no advice. Just listen to all the guys above, at least they know what they are talking about.

kingsolver72 · 12-17-2004, 01:23 AM

With the information given,my guess is that Mike Files is correct.

67ChevyC10Stepside · 12-17-2004, 02:06 AM

the temp has nothing to do with it....as i said before i could stick my hand in the coolant......it wasnt that hot. im sure they were 400 SB head gaskets yes....i have a set of 350 ones here still...you know i am in school to become a technician and i built this all from nothing and know a lot about this.....and i noticed the white smoke but it never crossed my mind. i feel so stupid right now.

Brainchild · 12-17-2004, 02:08 AM

It all good man,Money will fix it

67ChevyC10Stepside · 12-17-2004, 02:10 AM

also the other night i ran it for maybe a minute tried taking the cap off and there was a SH%$ load of pressure in there....finally got it bled off and tested the antifreeze and when i sucked it up it was completely white from air bubbles.

LT4XTREME · 12-17-2004, 11:24 AM

Ok! Now that I see you have a 400 and that you said you had 400 head gaskets. Do you have 400 heads or did you have the steam holes drilled into the heads if they are not 400 heads? A 400 has such a small area between the cylinders that the gaskets are thin and blow easy when the steam holes are not present. I have had to drill the holes in heads by using the gasket as a template and center punch the holes then carefully drill them out. I don't remember the size of bit that I used.

LT4XTREME · 12-17-2004, 11:32 AM

Just done a Google search for (drill steam holes 400 heads) and came up with the drill bit size for the steam holes 1/8" This is a common mistake when someone bulids a 400 because people are told all their live that a small block chevy are all the same and they forget about that "BIG" redheaded bastard stepchild of the small block family, the 400.

12-16-2004, 01:10 PM	#1
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	i hate my truck..... a couple nights ago i went out to adjust the valves and got it runnin decent so ran it up to like 2 grand for a little bit to warm it up good then let it idle at right about 1050-1100... it sat there for a while then it stalled and right after it stalled...the bottom radiator hose comes flieing off shooting however many gallons of hot antifreeze everywhere. what would cause that? i know the clamp was on tight because i checked it a couple nights ago. every time i fix one thing another one sh#$s out. im about ready to do this to it. Attached Images __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-16-2004, 01:24 PM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Thermostat never opened? __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

12-16-2004, 01:30 PM	#3
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	it dont have one.....and the coolant was just barely hot enough that i wouldnt stick my hand in it for a while....i could touch it for a little bit though. __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-16-2004, 01:33 PM	#5
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	Yeah, sounds like a cooling issue to me. Thermostat is the first to look at, maybe a 37 year old radiator, maybe crud in the water jackets of the block, maybe the water pump... 400 small blocks run a little hotter anyway because of the siamese cyliders. You could ship it to me and then you wouldn't have to worry about it anymore! __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

12-16-2004, 01:35 PM	#6
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	Oh, didn't see your last post, my first guess would be a bad fit on the hose. Maybe it's a little big and even though the clamp was tight, it wasn't actually tight. Maybe the hose is too short and the tension pulling on it helped work it off... Just where I'd start. __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

12-16-2004, 01:34 PM	#4
Randy70C-10 Account Suspended Join Date: Mar 2001 Location: Virginia Beach, Va. U.S.A. Posts: 15,320	Hmmm, I know that you said it was tight but the only thing that would make it come off like that is it wasn't tight enough. I can't think of any other reason.

12-16-2004, 01:38 PM	#7
RAT-AT-TACH Registered User Join Date: May 2003 Location: shawnigan lake b.c. canada Posts: 287	is it a new clamp? if not put a new one on. __________________ who says moneys not everything....try running a rat!

12-16-2004, 02:07 PM	#8
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	Could you have blown a head gasket? I wouldnt think so, but i know some bigger engines will blow the radiator hose off when they break a head gasket internally. __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

12-16-2004, 03:01 PM	#9
LT4XTREME Registered User Join Date: Nov 2004 Location: MINERAL WELLS WV Posts: 143	(quote) I hate my truck.. Sir put the wrench and hammer down and step away from the truck! Sir I said step away from the truck! j/k Hope you get it figured out. I would think that it takes a good bit of pressure to just blow a hose off. Why did you need to adjust the valves? Was it running real bad? Did it start running bad all at once? Is there a chance that it blew a head gasket and is pressurizing the cooling system?

12-16-2004, 03:20 PM	#11
rambler MOVE OVER Join Date: Jun 2002 Location: Warrensburg, MO Posts: 5,470	I was thinking the same thing as stelth, I had a cougar that did the same thing, blew off the lower raditor hose,, then the raditor blew a leak,, finally found out it had a blown headgasket,, (it really didnt blow white smoke out the tailpipe till later),, the pressure of the leak blew off the hose, parked it now the engine is water locked... __________________ No matter where you are..... There you are... Buckaroo Banzi

12-16-2004, 07:55 PM	#12
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	here it is the head gaskets are new......everything except the block is new. Attached Images __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-16-2004, 08:38 PM	#13
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	Personally I never could get them tight with a screw driver always use a ratchet and never had a problem. I would turn them tight as I could with a driver and the ratchet will always get them tighter. If the head gasket went I would expect it to be hot even with out a thermostat, and I would expect it to blow when he had the rpms up on it. Put it back on and run it again and see what happens. With no thermostat it will never really heatup around here. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

12-16-2004, 09:22 PM	#14
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	With no thermostat will cause overheating on some engines due to coolant flowing too fast to cool off in the radiator. I would suggest installing one correct for the season. __________________ 1968 Chevy 4x4 307 4 speed

12-16-2004, 09:42 PM	#15
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	when i did my engine swap i kept getting leaks on the lower hose, w couldnt get the worm drive style rad hose clamp tight enough, i striped out 2 of them. then i went to napa and got s different style and the problem was gone. i reefed the $h!+ out of them and no more leaks, something you might want to try __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

12-16-2004, 10:30 PM	#16
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	well i think it's the head gasket.....it ran like sh@% blows smoke and has pressure in the hose.....i tried to get that rad hose off for like 35 minutes the other night....i pulled it yanked it tried twisting it used a screwdriver a hammer everything and it wouldnt budge so i said screw it and put the clamp back on. then it blew itself off...the fin truck hates me. __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.



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12-16-2004, 10:59 PM	#17
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	the heads have been decked already and the block is a virgin block in real real nice shape so i should be good for that....how much do 400 head gaskets run? anyone know? it's been a while since i bought these. this kinda pisses me off though...:'( __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-17-2004, 01:13 AM	#18
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	i bought mine for $16.95 a side (felpro) might be a dumb question, but, are you sure that the head gaskets were for a sb400 and not a 350, cause then you would block the steam holes, but i think you knew that iirc from other conversations __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

12-17-2004, 01:24 AM	#19
spencra This, is my BOOMSTICK! Join Date: Oct 2003 Location: Berlin, CT Posts: 1,310	Ahh yes, Our trucks, it is a love hate relationship. Sorry, I have no advice. Just listen to all the guys above, at least they know what they are talking about. __________________ Larry Got rid of my projects for now. 1980 Jeep CJ7 1998 Nissan Sentra (my car) 2001 Toyota Sienna (wife's, of course)

12-17-2004, 01:23 AM	#20
kingsolver72 10/30/19 Join Date: Aug 2004 Location: ottawa kansas Posts: 5,205	With the information given,my guess is that Mike Files is correct.

12-17-2004, 02:06 AM	#21
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	the temp has nothing to do with it....as i said before i could stick my hand in the coolant......it wasnt that hot. im sure they were 400 SB head gaskets yes....i have a set of 350 ones here still...you know i am in school to become a technician and i built this all from nothing and know a lot about this.....and i noticed the white smoke but it never crossed my mind. i feel so stupid right now. __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-17-2004, 02:08 AM	#22
Brainchild Still drivin' a Rat Rod Join Date: Sep 2004 Location: Monett Missouri Posts: 4,925	It all good man,Money will fix it __________________ Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the a$# 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website

12-17-2004, 02:10 AM	#23
67ChevyC10Stepside Registered User Join Date: Mar 2004 Location: Butler PA Posts: 3,034	also the other night i ran it for maybe a minute tried taking the cap off and there was a SH%$ load of pressure in there....finally got it bled off and tested the antifreeze and when i sucked it up it was completely white from air bubbles. __________________ 67 c-10, 400 SB, TH350, 4.10 gears, Blazer tank,camaro tach, sidemarker fuel fill (soon) WTB: stepside parts, 67 front end parts, 67 small window cab. posi for 3.73 or 4.10 for 12 bolt and 10 bolt.

12-17-2004, 11:24 AM	#24
LT4XTREME Registered User Join Date: Nov 2004 Location: MINERAL WELLS WV Posts: 143	Ok! Now that I see you have a 400 and that you said you had 400 head gaskets. Do you have 400 heads or did you have the steam holes drilled into the heads if they are not 400 heads? A 400 has such a small area between the cylinders that the gaskets are thin and blow easy when the steam holes are not present. I have had to drill the holes in heads by using the gasket as a template and center punch the holes then carefully drill them out. I don't remember the size of bit that I used.

12-17-2004, 11:32 AM	#25
LT4XTREME Registered User Join Date: Nov 2004 Location: MINERAL WELLS WV Posts: 143	Just done a Google search for (drill steam holes 400 heads) and came up with the drill bit size for the steam holes 1/8" This is a common mistake when someone bulids a 400 because people are told all their live that a small block chevy are all the same and they forget about that "BIG" redheaded bastard stepchild of the small block family, the 400.

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