whole dop end performance job

[Guest Eurolumina92]

I plan to get a performance cam triple valve springs and performance push rods in my lumina 3.1 but i don't know what lifters to get?????????

 

 

and also what is the best for valve size the bigest i can get on in take and exaust or one smaller than the other all in put would be nice thanks ryan

[Robby1870]

Springs wont give any performance and pushrods wont either. If you do valves you'll have to machine the heads and have new seats put in

[Intlcutlass]

Springs wont give any performance and pushrods wont either. If you do valves you'll have to machine the heads and have new seats put in

 

The only way they would , is if you plan on adding a turbo. If no boost, he is absolutly right, those parts wont yeild you much (if anything at all). In a normally aspirated engine, you would (IMO) get more gains for you dollar from a 3 angle valve job , and a more aggressive cam. If you go with a Cam kit, usually the lifters come with the kit. What you want to look for to gain performance, is any part of the engine that will reduce friction/improve air flow. Valvetrain is a good place to start. The efficiency of the heads is where you make your power.

[Guest Eurolumina92]

what about porting and polishing intake haeds and air planem what gain would i get

[Intlcutlass]

You would get a gain from that , but I don't know what. I would guess it would be in the ballpark of about a 10-15 hp gain. I might be way off on that, like I said it's a guess.

[topless94style]

Your best bet is getting a 3 or 5 angle valve job combined with port and polish of both the heads and the plenum. If you do that and have a free flowing exhaust system i bet you could gain 20-30hp maybe? I could be off but thats my guess.