1990 305 TPI

I understand roller rockers are a good investment, and that steel ones will last basicly forever (unlike aluminum ones). What should I get? 1.5 or 1.6 ratio? How will the 1.6 ratio effect my drivability, mileage etc.? I definately want steel (if they are not outrageously expensive). Tell me everything I need to replace when I do this. Springs? I have the smokey startup, so I think I need new valve seals. What type should I get? I want to know EVERYTHING that is needed if I install roller rockers.

Please only post if you know what you are talking about, I know sometimes people post what they heard, and I want facts.

Sorry about the jumbled together post, and thanks in advance.

 

I'd get umbrella valve seals, new springs, and a good set of roller rockers. What size cam are you running? Do you intend on upgrading anytime soon, or not? - If you are running a stock cam, and don't intend on going huge anytime soon, Competition Products has aGM Performance "Z28" spring kit(springs, retainers, locks) for $30. The springs will easily handle to .510 lift, and are nice springs as long as you don't have too big of a cam. I think the kit may even come w/ valve seals. - Another thing, I personally haven't had any issues w/ aluminum roller rockers. Just buy quality. My father has a set of Harland Sharps that he bought in the mid 70's. He runs almost 300# of SEAT pressure! He has run these for years, they have millions of passes on them(drag car). No problems yet. I have the Crane Energizers, and I think they are a really quality rocker. CP has the new Miller mid-lifts, which are also good. They're selling them right now for like $150. - My head guy bought a set for his new 406. THey're not the prettiest rockers, but they're a really strong looking quality rocker. - sorry this is so long, just trying to help all I can -

later, justin...

 

Another thing, if you're on a stock cam, or a smaller cam, get 1.6's. They won't be a huge performance gain, but they'll help, and you won't sacrifice any drive ability/mileage.

 

I have a stock cam, and I may upgrade in the future, but nothing extreme. How much total lift can the valves take before they hit the pistons?

 

Also, do I need to replace the valves or pushrods? And could someone explain the diferent types of valve seals? Sorry I'm asking so many questions, but I've never delved into the inside of engines before.