Need More Help Guys!!!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 05-29-2003, 09:05 PM

OK, I am now ready to put the heads on this 350, is there any markings to tell you which side is which??

360hp350 · 05-29-2003, 09:26 PM

pretty sure it doesnt matter. either that or I got lucky every time. but seriously look at the heads side by side and they have the same holes and etc.

matt67350 · 05-29-2003, 09:28 PM

yes it does, make sure the assessories will bolt up, alt bracket,power steering pump, a/c brackets

**old Rusty C10** · 05-29-2003, 09:29 PM

i think therye interchangable ive never tried to see which was which

360hp350 · 05-29-2003, 09:29 PM

every head I ever had had the same holes

**StingRay** · 05-29-2003, 09:35 PM

If they are the same casting no's they will likely have the same holes on the same ends. Line up side by side facing the same way and not as though they are on the engine and you will know right away. If for some reason the holes are different then as already said make sure you are going to get your accessory holes where you need them.

lukecp · 05-29-2003, 09:46 PM

On every SBC head i have seen, the heads are exactly the same. If you lay them right next to each other, you will see that they have the same holes on the end of each head. With a short water pump truck, the head will have holes for the alternator braket on one end, and a hole for the battery ground cable on the other. The temp sending hole is also on each head, just one is plugged. They only go on one way, so you should be just fine, unless they are different casting numbers as stated above. GM did this to save money and time (make 2 heads on one mold instead of 2 heads on 2 molds)

*Randy70C-10* · 05-29-2003, 10:09 PM

Like they said, both sides are the same. You do know which order to torque the bolts, right?

dubie · 05-29-2003, 10:25 PM

Thanks for the replies guys. I'm at home now, so I got the heads all figured out. I have just the small stuff to put on now. Got everything from the crank to the intake done tonight . Well I still have to put the push rods, and rocker arms on. Good night of progress

Longhorn Man · 05-29-2003, 11:15 PM

Don't forget to roatate the heads from side to side on the engine every 50,000 miles!
(Can you believe we had a kid actually believe this once!?!?!)

*Randy70C-10* · 05-30-2003, 09:49 AM

I have to remember that.

Big69C20 Toy · 05-30-2003, 10:23 AM

i like that one longhorn... and i suppose it would be a good thing seeing as you'd check your valves and pistons every 50k

hehe

**JIMs70GMC** · 05-30-2003, 10:30 AM

3000 more miles and I'll be rotating my heads. LOL

Longhorn Man · 05-30-2003, 11:04 AM

LOL! IT was when i was in the army and we pulled a Hummer in to service it. I was training the FNG how to service them and I ran down the list explaining what needed to be done. (I was getting ready to leave the motor poos since I was clearing getting ready to come back state side) As I was ready to walk out of the bay, I told the kid to read me the mileage and he said 49thousand and some chainge.
You shoulda seen the look on his face when i told him. "Oh sh!t man...you need to rotate the heads before 50,000. OTherwiser you'll wear out the passenger side becouse the torque roatates the engine to where all the fuel and air goes to that side and the drivers side is hardly used."
HE was pretty p!ssed an hr later whe I came back and he had all the tool , was ready to rip it apart, and was trying to locate head gaskets! (Which a job like head gaskets was out of our job level anyways!)

progress · 05-30-2003, 11:07 AM

50000 MILES...really? What oil are using in your liquid sodium cooler? I an only getting 5000 miles out of mine so have been rotating them every 3000 just to be on the safe side! I love this board...so much help and this will save me a ton on head gaskets alone!

Long Knight · 05-30-2003, 11:32 AM

I haven't had to rotate mine since I installed my flux capacitor.

oldsub86 · 05-30-2003, 11:11 PM

The heads should be the same and be interchangable but be careful with the head gaskets. I am no expert on Chevy V8's so maybe someone else knows better but some engines have coolant passages that must line up with gasket holes etc. If you get the head gaskets reversed, they will overheat. I know this can happen on Toyota V6's from reading another forum devoted to them.

05-29-2003, 09:05 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	Need More Help Guys!!!!! OK, I am now ready to put the heads on this 350, is there any markings to tell you which side is which?? __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

05-29-2003, 09:26 PM	#2
360hp350 Registered User Join Date: May 2003 Location: Springfield, MO Posts: 132	pretty sure it doesnt matter. either that or I got lucky every time. but seriously look at the heads side by side and they have the same holes and etc. __________________ 72 Chevy Chevelle - Firing off saturday morning 74 Chevy Blazer - 360 horsepower 350 78 Chevy Suburban - 454/TH400 parts truck for chevelle 88 Chevy S-Blazer - 2WD, no motor/trans FOR SALE $450 I will turn 19 in boot camp

05-29-2003, 09:28 PM	#3
matt67350 Registered User Join Date: May 2001 Location: Benbrook, TX Posts: 1,060	yes it does, make sure the assessories will bolt up, alt bracket,power steering pump, a/c brackets __________________ 69 swb stepside, rebuild and upgrade in progress

05-29-2003, 09:29 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,345	i think therye interchangable ive never tried to see which was which __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

05-29-2003, 09:29 PM	#5
360hp350 Registered User Join Date: May 2003 Location: Springfield, MO Posts: 132	every head I ever had had the same holes __________________ 72 Chevy Chevelle - Firing off saturday morning 74 Chevy Blazer - 360 horsepower 350 78 Chevy Suburban - 454/TH400 parts truck for chevelle 88 Chevy S-Blazer - 2WD, no motor/trans FOR SALE $450 I will turn 19 in boot camp

05-29-2003, 09:35 PM	#6
StingRay Senior Member Join Date: Mar 2000 Location: Saskatoon,SK,Canada Posts: 2,487	If they are the same casting no's they will likely have the same holes on the same ends. Line up side by side facing the same way and not as though they are on the engine and you will know right away. If for some reason the holes are different then as already said make sure you are going to get your accessory holes where you need them. __________________ Saskatoon, Saskatchewan Canada

05-29-2003, 09:46 PM	#7
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	On every SBC head i have seen, the heads are exactly the same. If you lay them right next to each other, you will see that they have the same holes on the end of each head. With a short water pump truck, the head will have holes for the alternator braket on one end, and a hole for the battery ground cable on the other. The temp sending hole is also on each head, just one is plugged. They only go on one way, so you should be just fine, unless they are different casting numbers as stated above. GM did this to save money and time (make 2 heads on one mold instead of 2 heads on 2 molds) __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

05-29-2003, 10:09 PM	#8
Randy70C-10 Account Suspended Join Date: Mar 2001 Location: Virginia Beach, Va. U.S.A. Posts: 15,320	Like they said, both sides are the same. You do know which order to torque the bolts, right?

05-29-2003, 10:25 PM	#9
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	Thanks for the replies guys. I'm at home now, so I got the heads all figured out. I have just the small stuff to put on now. Got everything from the crank to the intake done tonight . Well I still have to put the push rods, and rocker arms on. Good night of progress __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

05-29-2003, 11:15 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Don't forget to roatate the heads from side to side on the engine every 50,000 miles! (Can you believe we had a kid actually believe this once!?!?!)

05-30-2003, 09:49 AM	#11
Randy70C-10 Account Suspended Join Date: Mar 2001 Location: Virginia Beach, Va. U.S.A. Posts: 15,320	I have to remember that.

05-30-2003, 10:23 AM	#12
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	i like that one longhorn... and i suppose it would be a good thing seeing as you'd check your valves and pistons every 50k hehe __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-30-2003, 10:30 AM	#13
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	3000 more miles and I'll be rotating my heads. LOL __________________ 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

05-30-2003, 11:04 AM	#14
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	LOL! IT was when i was in the army and we pulled a Hummer in to service it. I was training the FNG how to service them and I ran down the list explaining what needed to be done. (I was getting ready to leave the motor poos since I was clearing getting ready to come back state side) As I was ready to walk out of the bay, I told the kid to read me the mileage and he said 49thousand and some chainge. You shoulda seen the look on his face when i told him. "Oh sh!t man...you need to rotate the heads before 50,000. OTherwiser you'll wear out the passenger side becouse the torque roatates the engine to where all the fuel and air goes to that side and the drivers side is hardly used." HE was pretty p!ssed an hr later whe I came back and he had all the tool , was ready to rip it apart, and was trying to locate head gaskets! (Which a job like head gaskets was out of our job level anyways!)

05-30-2003, 11:07 AM	#15
progress Gotta luv a clean shave Join Date: Jan 2002 Location: Kent, WA Posts: 226	50000 MILES...really? What oil are using in your liquid sodium cooler? I an only getting 5000 miles out of mine so have been rotating them every 3000 just to be on the safe side! I love this board...so much help and this will save me a ton on head gaskets alone! __________________ Welding while you wait...you can help if you like and it...might even save you a little as long as you don't mess things up! We make house calls too...just like the old days!



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05-30-2003, 11:32 AM	#16
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	I haven't had to rotate mine since I installed my flux capacitor. __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

05-30-2003, 11:11 PM	#17
oldsub86 Registered User Join Date: Dec 2002 Location: Canada Posts: 695	The heads should be the same and be interchangable but be careful with the head gaskets. I am no expert on Chevy V8's so maybe someone else knows better but some engines have coolant passages that must line up with gasket holes etc. If you get the head gaskets reversed, they will overheat. I know this can happen on Toyota V6's from reading another forum devoted to them. __________________ 1968 Chevy - 292 with a powerglide

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