[Edgar661]

Hey guys I need help figuring the pushrod length I should go with I am doing a cam swap an was wondering if I should use stock length pushrods? The firebird is a 93 i have 1.6rr on the stock heads and 503 comp cam stock lifters so if u can please help that b great guys

 

[shoebox]

Stock PRs are 7.200". If your stock heads have not been milled or any deck work done to the block and you say you still have the stock lifters, there is no need for any different length PR. The cam has nothing to do with PR length.

 

[Viper]

Post #4
pushrod length - CamaroZ28.Com Message Board

COMP Cams® - Pushrods


GrumpysPerformance.com • View topic - sellecting valve springs, and setting up the valve train

 

[PA94Z]

Stock PRs are 7.200". If your stock heads have not been milled or any deck work done to the block and you say you still have the stock lifters, there is no need for any different length PR. The cam has nothing to do with PR length.

If the base circle is different it will change push rod length.

 

[shoebox]

If the base circle is different it will change push rod length.

I meant in his situation. Do you think he has a small base circle CC503?

But, you are correct. :thumbsup:

 

[PA94Z]

I meant in his situation. Do you think he has a small base circle CC503?

But, you are correct. :thumbsup:

No that's not what I meant at all. A stock base circle is around 1.130 - CC503 base circle is ?? -- whatever Comp decided on. Like you said.. the difference is probably not going to effect push rod length with .503 lift lobe, but I'd check it anyway.