stainless valves
stainless valves I have a set of milled 317 heads and I am going to replace the valves and have a valve job done. I bought some new ferrea F6230 stainless intake valves
2.00" from a member on here for a great price.Do I have to buy the exhaust stainless valves from the same company or can I use say another manufactures stainless valves(like rev). As long as they are Ls1 valves will that work ok. I can get a deal on some 1.55" from another company.
Can you use 1.57" exhaust valves with 2.00" intake valves, instead of 1.55". My friend says that you can't do that. What do you guys think?
2.00" from a member on here for a great price.Do I have to buy the exhaust stainless valves from the same company or can I use say another manufactures stainless valves(like rev). As long as they are Ls1 valves will that work ok. I can get a deal on some 1.55" from another company.
Can you use 1.57" exhaust valves with 2.00" intake valves, instead of 1.55". My friend says that you can't do that. What do you guys think?
TECH Fanatic
Joined: Aug 2012
Posts: 1,334
Likes: 1
From: Wildomar, CA
Who is milling the heads? They can probably do whatever you want. But I would ask them... That's kind of their realm of knowledge. You can run whatever you want, it just may not be optimized for proper flow.
I had 2.02" intake/1.575" exhaust valves in my old car but the valve seats have to be cut for bigger valves if you want to change to bigger valves than stock. Youll have to get a valve job also...
No the stock valves are in good shape.I thought that the stainless were better valves.That's why I was going to replace them. Are the stock valves any good? A machine shop told me that my money was better spent porting these heads than replacing them with 2.02" 1.57" valves. That's why I am asking you guys about this.
Staging Lane
Joined: Feb 2013
Posts: 55
Likes: 0
From: Miami, FL
You will get far more gain out of porting, aftermarket same-size valves will gain nothing, and going up .02" won't do anything either without porting. Just port and leave the stock valves with a proper valve job.
Trending Topics
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
No the stock valves are in good shape.I thought that the stainless were better valves.That's why I was going to replace them. Are the stock valves any good? A machine shop told me that my money was better spent porting these heads than replacing them with 2.02" 1.57" valves. That's why I am asking you guys about this.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Stock valves are fine. I actually run stock LS3 intake valves on my heads... they've just been "turned" down to the correct size. I run a Ferrea stainless exhaust valve.
TEA and Ai both do porting on stock heads and keep stock valves. You lose velocity when you move to a larger valve, but if you have more bore or need more upper lift/RPM flow, they can help.
TEA and Ai both do porting on stock heads and keep stock valves. You lose velocity when you move to a larger valve, but if you have more bore or need more upper lift/RPM flow, they can help.
