What exactly would happen if I put 1.6 rollor rockers on my 91 350 tpi? I have a set that was given to me and just want to know what the benifits are. Would I need longer push rods or will the stock ones work?

 

Still looking for answer

 

If you put them on a stock 350tpi, you will benefit very little.

If you have done alot of mods,(cai, headers, ported intake, afpr) you will notice a small increase.

You don't have to change push

The benefits would make the valves stay open a touch longer.

Use the search button, there is alot more info out there.

 

In most cases your stock pushrods will work but the only way to tell for sure would be to mock up one of the rocker arms and open and close the valves and see if you have any binding issues. By installing the rockers it will increase your valve lift and a touch more duration. If you can find the cam's spec at the lobe lift and X's that by 1.5 and then by 1.6 you will see the increase in lift on paper.

 

Actually, if you're going to use lobe lift, just multiplying by 1.6 will give you your new lift. If using the current lift (with 1.5 rockers), multiply that lift by 1.6 then divide by 1.5 to get your new lift.

 

for every .1" of lift you get 1/2 a degree of timeing ( Visard)