305 probably dead! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gchemist · 07-28-2003, 03:37 AM

My indestructable SB 305 may have been done in by the cooling system. The heater supply hose cracked at the intake connection. I get to work open the hood and coolant is going everywhere.

Easy fix, cut the hose end and reconnect.

Digital guages are scary. I saw the temp get up to 235+!!

I check the oil and the oil is cooked. It's still a liquid but you can tell by feeling it between your fingers that it was subjected to extreme heat. The oil pressure guage is stuck at ~73 PSI. The normal PSI is slightly lower at normal high speeds. I plan on changing the oil ASAP. This is the first time I've cooked an engine oil. The SB has survived a cracked radiator but this time the Texas heat may have done the 305. It still idles smooth. Now I'll just have to wait till I change the oil.

the baron · 07-28-2003, 06:00 AM

Don't panic...
I got the same problem on my 300ci Buick years ago , all the cooling water was gone ( hose blew away ) , my temp sensor was shot ( no lamp on the dash ) , the engine got blocked...
I let the engine to cool down , fix the hose , put fresh water in , start the engine back , no special noise...
These engines ar solid as a rock , it's all cast iron , change your oil & cross your fingers

The baron
____________________________________________________
1979 C10 long bed , Olds 350ci engine , stock ( & dead)
1986 Burb , 6.2 Diesel ( shot ) , restauration project
1977 Impala sedan , straight six 250ci , "Ye Old Reliable"
1960 Girl Friend , frame still good , body has some dents

ocbaud · 07-28-2003, 10:35 AM

wish i could do that:p

bigblock73 · 07-28-2003, 11:29 AM

Quote:

Originally posted by the baron
cross your fingers

cross yur fingers you grenaded it...time for that long overdue and hyped up 350 you have been yappin about ever since I can remember.

...Jeff

79BIG10 · 07-28-2003, 01:55 PM

SPeaking of the long awaited 350 what stage is it at now?

apstguy · 07-28-2003, 02:13 PM

No worrys. 305 don't want to be replaced with a 350 so they survive through everything (wether it is to the delight or dismay of the owner). My 305 beast won't die. They may not have power, but they are stout little things!

Prerunner1982 · 07-28-2003, 02:32 PM

mine must have wanted to go, blew a head gasket and rod all in the same week!

Tom · 07-28-2003, 05:10 PM

I blew up my water pump in my 307ci caddy once. Driving home it started pinging. Had to keep driving it for another couple miles with no coolant what so ever. The dam thing not only ran fine after fixing the pump, bu the oil wasen't even cooked! And that was in 110* heat. I think your 305 will be fine. Which is good for you, since I don't think there really is any super duper 350 in the works :p

**N2TRUX** · 07-28-2003, 06:47 PM

Well just in case OL Bullet bit the big one, I happen to know where a very low mile LS1 motor is at. It's fresh out of a totaled Vette....

If you rally want another 305, I can make you a deal on a 84 Z-28 H.O. 305 that has less than 30k on it....

*1FaastC10* · 07-28-2003, 09:28 PM

Quote:

Originally posted by Tom
I blew up my water pump in my 307ci caddy once. Driving home it started pinging. Had to keep driving it for another couple miles with no coolant what so ever. The dam thing not only ran fine after fixing the pump, bu the oil wasen't even cooked! And that was in 110* heat. I think your 305 will be fine. Which is good for you, since I don't think there really is any super duper 350 in the works :p

the 307 i used in my first 2 derby cars didnt like to run good until 260*+, and i picked one up last week and derbied it on Saturday. it didnt start to run good until 240*

gchemist · 07-28-2003, 11:30 PM

The 305 has survived.

I drove the truck home and changed the oil this morning. No problems. Still have a 16 sec 305 in the 4000 lbs truck. I think it even idles smoother. Guess the 350 upgrade is going to have to wait. The filter was really cooked. I pulled off the filter and the usual spill while you unscrew it didn't happen!! The filter was basically empty! Well the SB survived and it lives to race and terrorize the streets.

Those who doubt will see nothing but tailgate. The block in the picture is not the same one I'm going to use now. I have 94 suburban 350 that will get a 272 XE roller cam.

CT-Truckster · 07-28-2003, 11:44 PM

hey i got one of those indestructible 305's too. it leaks oil like crazy around timimg cover seal i think, well i went for about 3 months without adding any oil to thinking and hoping it would blow chunks, my oil pressure gauge aint worked in over six months. well it finally got to making all kinds of scary noises, popping, missing, and got so bad i couldn't even drive it to finish it off. guess the oil got so low it couldn't even pump it to the lifters, but it just wouldn't die. well i put about a little over 3 quarts of oil in it and the damned thing ran better than it ever did and still going strong after 3 more months. i been keeping a check on the oil now and guess i'm gonna fix the leak in the t.c. cover if it wants to live that bad. soon as I get the leak fixed it'll probably expolode then.

**N2TRUX** · 07-28-2003, 11:55 PM

Quote:

Originally posted by gchemist
.....Those who doubt will see nothing but tailgate......

Ok, whenever your ready, I'm game...

Prerunner1982 · 07-29-2003, 01:45 AM

well i should say, even with a blown rod the thing still drove its way to the repair shop..... 45 miles away!

method2mymadnes · 08-03-2003, 06:18 PM

I have one of those 305's that I have run out of oil and water, they just won't die.

07-28-2003, 03:37 AM	#1
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	305 probably dead! My indestructable SB 305 may have been done in by the cooling system. The heater supply hose cracked at the intake connection. I get to work open the hood and coolant is going everywhere. Easy fix, cut the hose end and reconnect. Digital guages are scary. I saw the temp get up to 235+!! I check the oil and the oil is cooked. It's still a liquid but you can tell by feeling it between your fingers that it was subjected to extreme heat. The oil pressure guage is stuck at ~73 PSI. The normal PSI is slightly lower at normal high speeds. I plan on changing the oil ASAP. This is the first time I've cooked an engine oil. The SB has survived a cracked radiator but this time the Texas heat may have done the 305. It still idles smooth. Now I'll just have to wait till I change the oil. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

07-28-2003, 01:55 PM	#5
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	SPeaking of the long awaited 350 what stage is it at now? __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

07-28-2003, 02:13 PM	#6
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	No worrys. 305 don't want to be replaced with a 350 so they survive through everything (wether it is to the delight or dismay of the owner). My 305 beast won't die. They may not have power, but they are stout little things! __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

07-28-2003, 02:32 PM	#7
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	mine must have wanted to go, blew a head gasket and rod all in the same week! __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

07-28-2003, 05:10 PM	#8
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	I blew up my water pump in my 307ci caddy once. Driving home it started pinging. Had to keep driving it for another couple miles with no coolant what so ever. The dam thing not only ran fine after fixing the pump, bu the oil wasen't even cooked! And that was in 110* heat. I think your 305 will be fine. Which is good for you, since I don't think there really is any super duper 350 in the works :p __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

07-28-2003, 06:00 AM	#2
the baron Registered User Join Date: Mar 2003 Location: Liège , Belgium Posts: 263	Don't panic... I got the same problem on my 300ci Buick years ago , all the cooling water was gone ( hose blew away ) , my temp sensor was shot ( no lamp on the dash ) , the engine got blocked... I let the engine to cool down , fix the hose , put fresh water in , start the engine back , no special noise... These engines ar solid as a rock , it's all cast iron , change your oil & cross your fingers The baron ____________________________________________________ 1979 C10 long bed , Olds 350ci engine , stock ( & dead) 1986 Burb , 6.2 Diesel ( shot ) , restauration project 1977 Impala sedan , straight six 250ci , "Ye Old Reliable" 1960 Girl Friend , frame still good , body has some dents

07-28-2003, 10:35 AM	#3
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	wish i could do that:p

07-28-2003, 06:47 PM	#9
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Well just in case OL Bullet bit the big one, I happen to know where a very low mile LS1 motor is at. It's fresh out of a totaled Vette.... If you rally want another 305, I can make you a deal on a 84 Z-28 H.O. 305 that has less than 30k on it.... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

07-28-2003, 11:30 PM	#11
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	The 305 has survived. I drove the truck home and changed the oil this morning. No problems. Still have a 16 sec 305 in the 4000 lbs truck. I think it even idles smoother. Guess the 350 upgrade is going to have to wait. The filter was really cooked. I pulled off the filter and the usual spill while you unscrew it didn't happen!! The filter was basically empty! Well the SB survived and it lives to race and terrorize the streets. Those who doubt will see nothing but tailgate. The block in the picture is not the same one I'm going to use now. I have 94 suburban 350 that will get a 272 XE roller cam. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

07-28-2003, 11:44 PM	#12
CT-Truckster ? Join Date: Jul 2002 Location: Dyersburg, TN Posts: 471	hey i got one of those indestructible 305's too. it leaks oil like crazy around timimg cover seal i think, well i went for about 3 months without adding any oil to thinking and hoping it would blow chunks, my oil pressure gauge aint worked in over six months. well it finally got to making all kinds of scary noises, popping, missing, and got so bad i couldn't even drive it to finish it off. guess the oil got so low it couldn't even pump it to the lifters, but it just wouldn't die. well i put about a little over 3 quarts of oil in it and the damned thing ran better than it ever did and still going strong after 3 more months. i been keeping a check on the oil now and guess i'm gonna fix the leak in the t.c. cover if it wants to live that bad. soon as I get the leak fixed it'll probably expolode then.

07-29-2003, 01:45 AM	#14
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	well i should say, even with a blown rod the thing still drove its way to the repair shop..... 45 miles away! __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-03-2003, 06:18 PM	#15
method2mymadnes Registered User Join Date: Jun 2003 Location: Dyersburg, TN Posts: 327	I have one of those 305's that I have run out of oil and water, they just won't die. __________________ 87% of all statistics are made up on the spot.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.