| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
01-22-2022, 11:35 PM
|
|||
|
|||
Figuring push rod length
Planning a stock rebuild on my 66 389. If the block needs to be decked and or the heads need to be surfaced, at what point can this require a custom(non stock) length push rod?
__________________
Terry Hunt "He'd need 5 years in the fifth grade just to get an idiot certificate" Smokey Yunick re: Bill France Jr. |
|
#2
01-23-2022, 01:11 AM
|
||||
|
||||
|
Pushrods are available every .050" in length so a simplistic answer would be that you would have to remove over .050" before going to the next shortest size available. Considering that heads usually have less than .010" removed on a cleanup and decks up to about .010", you are less than half way to ordering new pushrods. So if everything is really stock, standard length pushrods will be good.
If the shop uses a different length valve or the stock replacement camshaft has a different base circle or a dozen other things change, then you might need a different length to keep the geometry where it should be.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
