I have a set of the brand unknown alum 1.5 3/8 rollers. Can I use them on my occasionally driven 305 T/A and not worry about breakage. Cam has .454 lift on generic .550 lift springs.

 

Yes, this would be the stock ratio, but you must realize depending on what year as 87 up would use self aligning rocker arms and 86 and earlier used just the pushrod guide slots to keep them aligned. Which ever is on the car now much match what you want to replace them with. Easy way to tell without looking, perimeter valve bolt covers means 86 and earlier, and center bolt valve covers mean 87 and up. Of course this is all assuming nothing has been changed and factory original.

 

thanks , but it's not really a fitment question but a durability question. I was getting ready to install my rockers so I went to do a search on the ft. lbs. of the polylock set screw. What I found though was several people putting these down for a street engine. Would just like to know if it's all "ba low knee". If so, can anyone give me the torque on that set screw.