Aftermarket Valves???
Thread Starter
Joined: Dec 2007
Posts: 1,645
Likes: 430
From: Dakota Territory
Aftermarket Valves??? I was wondering what all the big dogs are running for aftermarket valves...
I'm really $hitty at the search thing...I really couldn't find a lot of info about just valves.
I'd like to stay within a reasonable price range, but am open to all suggestions...
Theses will be going in some 243's, on a flat top forged 370". NA for now, but FI or nitrous eventually...
I'm really $hitty at the search thing...I really couldn't find a lot of info about just valves.
I'd like to stay within a reasonable price range, but am open to all suggestions...
Theses will be going in some 243's, on a flat top forged 370". NA for now, but FI or nitrous eventually...
I was wondering what all the big dogs are running for aftermarket valves...
I'm really $hitty at the search thing...I really couldn't find a lot of info about just valves.
I'd like to stay within a reasonable price range, but am open to all suggestions...
Theses will be going in some 243's, on a flat top forged 370". NA for now, but FI or nitrous eventually...
I'm really $hitty at the search thing...I really couldn't find a lot of info about just valves.
I'd like to stay within a reasonable price range, but am open to all suggestions...
Theses will be going in some 243's, on a flat top forged 370". NA for now, but FI or nitrous eventually...
Ferrea and Manley make good valves, REV too and they're usually a little cheaper than the other two.
I'm running GM hollow stem 2.165" intake valves and Ferrea 1.55" exhaust valves in my TFS heads, but I'm staying NA. With boost or nitrous, you would probably benefit more by having as big of an exhaust valve as you can fit.
Thread Starter
Joined: Dec 2007
Posts: 1,645
Likes: 430
From: Dakota Territory
TECH Addict
Joined: Jul 2013
Posts: 2,189
Likes: 123
From: Portland, Oregon
The ls6 valves are no longer in production, from what I have heard. In a separate thread discussing valves and coefficient of discharge, there is a point of diminishing returns with increasing intake valve size. Remember, flow goes both ways, so as you increase the valve size, you also increase the chance of reversion.
If considering boost or nitrous, I would definitely get larger exhaust valves, something in the 1.57 or 1.575 range, and I wouldn't go any larger than a 2.02 or 2.04 on the intake.
If considering boost or nitrous, I would definitely get larger exhaust valves, something in the 1.57 or 1.575 range, and I wouldn't go any larger than a 2.02 or 2.04 on the intake.
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Thread Starter
Joined: Dec 2007
Posts: 1,645
Likes: 430
From: Dakota Territory
It's going to be awhile till I go FI, but I suppose I should be looking at something like the Manley #11675-8 Extreme duty Pro Flow exhaust's...???
I'm a "cheap a$$" so paying more for half the valves I need for 2 heads, than I did for the 243's to begin with, well let's just say it might be hard to slip that one by the Ol' lady...
I'm a "cheap a$$" so paying more for half the valves I need for 2 heads, than I did for the 243's to begin with, well let's just say it might be hard to slip that one by the Ol' lady...
