adding 1.7 rockers

[tlonz88442]

Will adding 1.7 rockers to an 1976 olds 445 help , hurt , or remain the same as to performance. ?

 

[pmc03spike]

Will adding 1.7 rockers to an 1976 olds 445 help , hurt , or remain the same as to performance. ?

I don't think it would hurt your hp output, you may not feel it either. You may have to replace your springs and retainers especially if you have any sort of cam in it. By adding 1.7 rockers your changing the spring compression and adding duration/lift from your cam. I not sure on what the stock spring rating is on the big block. Its worth looking into I would think. And a roller rocker would be better.

 

[tlonz88442]

Thanks alot for the info.

 

[olds307 and 403]

Are you planning on the Scorpion bolt on rockers with 5/16" bolts? You will probably need new pushrods due the different geometry. I personally like the simplicity of Olds non adjustable rocker set up. I am going with adjustable rockers shortly, a necessary evil for more performance. 1.6 for now, came with the heads I bought. I plan on 1.72 rockers next year after I see how it runs as is.