Mudbone Posted March 3, 2012 Share Posted March 3, 2012 What would the difference be in timing covers if the casting number were the same except for the last number? Mine is a 1343872-2 and the other is – 4 (Mine has a broken casting at the guide pin for the water pump) Mud Link to comment Share on other sites More sharing options...
old-tank Posted March 4, 2012 Share Posted March 4, 2012 As far as function there will be no difference. It might make a difference to some numbers matching anal-retentive.For your timing cover seal use one for a Buick 455. You will need to chamfer the cover and use proper tools to install since there is a 0.020" interference fit.Willie Link to comment Share on other sites More sharing options...
Mudbone Posted March 4, 2012 Author Share Posted March 4, 2012 As far as function there will be no difference. It might make a difference to some numbers matching anal-retentive.For your timing cover seal use one for a Buick 455. You will need to chamfer the cover and use proper tools to install since there is a 0.020" interference fit.WillieI am assuming it is a lip type seal. Do you install it from the back side? Mud Link to comment Share on other sites More sharing options...
buick5563 Posted March 4, 2012 Share Posted March 4, 2012 Yes. Link to comment Share on other sites More sharing options...
Leif Holmberg Posted March 4, 2012 Share Posted March 4, 2012 Every time they do a smal change in the casting model they have to change the last digits.That`s my thought.Your number will fit 1953 -50-70 models and all 1954-1955 models.Other year have totaly different numbers. Leif in Sweden. Link to comment Share on other sites More sharing options...
MrEarl Posted March 4, 2012 Share Posted March 4, 2012 Doesn't the difference between 53-55 and 56 timing chain covers have to do with the front side, the mounting of the water pump? I'm looking to use a '56 water pump as it has more flow capacity than earlier models and have been thinking I will need to change the timing chain cover also. Am I correct on this? Link to comment Share on other sites More sharing options...
old-tank Posted March 4, 2012 Share Posted March 4, 2012 Doesn't the difference between 53-55 and 56 timing chain covers have to do with the front side, the mounting of the water pump? I'm looking to use a '56 water pump as it has more flow capacity than earlier models and have been thinking I will need to change the timing chain cover also. Am I correct on this?Yes, there is difference in the front, and on 56 there are no outlets for the tranny cooler on the left side of the timing cover. For best cooling use the later nailhead cover and water pump. Just remember if you change/modify one thing you will create 3 new problems.Willie Link to comment Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now