You dont have to begin a new thread with every new question you have, you can continue on with related questions in the same one. It makes it tough for those trying to help you to keep abreast of whats going on. Don't be upset after only 1 hr that no one has replied, give people a chance.
Now, the first thoughts that come to mind regarding your question...
Those valve springs turned 30yrs old this year and have god knows how many heat cycles on them. Do you still think they perform to factory spec?
Something else to think about is that there are more factors than max lift to consider when selecting springs... One of them is the ramp rate. Aftermarket cams being more aggressive by nature are likely going to have steeper ramp rates which will also necessitate better springs. They are inexpensive and easy to swap ...not a gamble I'd make.
Im actually not familiar with that head and its flow rates etc, but by the looks of the post above mine, you need to go raid an explorer in a junk yard.
Now, the first thoughts that come to mind regarding your question...
Those valve springs turned 30yrs old this year and have god knows how many heat cycles on them. Do you still think they perform to factory spec?
Something else to think about is that there are more factors than max lift to consider when selecting springs... One of them is the ramp rate. Aftermarket cams being more aggressive by nature are likely going to have steeper ramp rates which will also necessitate better springs. They are inexpensive and easy to swap ...not a gamble I'd make.
Im actually not familiar with that head and its flow rates etc, but by the looks of the post above mine, you need to go raid an explorer in a junk yard.
