Sign in to follow this  
H1950

1950 Pontiac

Recommended Posts

Need information on order of head bolt torque on 1950 Pontiac straight 8 motor.

Share this post


Link to post
Share on other sites

:) Here is the order for 1940-1954 straight eights from my Motors manual as per their picture of the head and tightening sequence:

20 19 18 15 14 10 22 23 26 27 30

front

5 4 3 2 1 6 7 8 9 rear

21 17 16 13 12 11 24 25 28 29

Cylinder head bolts torque: 60 ft. lbs. in the order above after cleaning and oiling the bolts.

Motors says to coat the head bolts with white lead and oil and tighten finger tight initially and then torque down in sequence above. I always retorqued bolts twice and once again after I ran the engine. Good luck, and have a great Christmas and New Year!

:) kaycee

Share this post


Link to post
Share on other sites

kaycee what is the white lead and where can you purchase it? What kind of oil does manual reccomend?

Share this post


Link to post
Share on other sites

Forget the "white lead"... it's an obsolete lube used until it was banned from most countries. Machine shops used it on "live centers" while doing lathe work.

Use regular 10W or a similar oil for lubrication... any motor oil will do. Be sure the threads are clean.

Share this post


Link to post
Share on other sites
Guest

Chase threads with a tap and die using WD40, then clean oil/rust residue with brake kleen, blow dry, add a thin coat of anti seize and install. The anti seize takes the place of the lead.------just use a very thin coating

Don

Share this post


Link to post
Share on other sites

Thanks for all the information. I finished getting head bolts in this afternoon. Look forward to enjoying this car. Not completely restored but a good car to drive.

Share this post


Link to post
Share on other sites

Do you have information on torque for the harmonic balancer and flywheel

for the 1950 Pontiac flathead 8?

Share this post


Link to post
Share on other sites
Guest
Do you have information on torque for the harmonic balancer and flywheel

for the 1950 Pontiac flathead 8?

________________________________________________________________________

I have 105 ft. Lbs. for the flywheel and 95 Ft. lbs. for the balancer.

D.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this