LT1 Valves??
#1
On The Tree
Thread Starter
iTrader: (13)
Join Date: Jan 2008
Location: Wisconsin
Posts: 139
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I have acquired a set of bare NOS aluminum lt1 heads that i am planning on using for an lt1 buildup, i plan to get the heads ported and before i do i wanted to get the seats ground down to except bigger valves, what is the biggest valve sizes that can be run on a stock heads and what length should i get, i am gonna be running a custom ground cam, so would there be any advantage of running longer valves? Or stick with stock length.
#3
LS1TECH Sponsor
iTrader: (7)
Join Date: Oct 2002
Location: Texas
Posts: 414
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
1.94/1.50 is stock size and you can go up to a 2.00/1.56 with the stock seats if machined for them. Anything larger will need larger valve seats installed.
Most use the 4.911" long Manley 11500/11501 ($200 thru Summit) or 4.960" long Ferrea 6161/6165 ($250 or so and hard to find a supplier for average person).
These lengths mentioned can be set up with just about any spring to handle a hyd roller and alot of solid rollers.
Lloyd
Most use the 4.911" long Manley 11500/11501 ($200 thru Summit) or 4.960" long Ferrea 6161/6165 ($250 or so and hard to find a supplier for average person).
These lengths mentioned can be set up with just about any spring to handle a hyd roller and alot of solid rollers.
Lloyd