2.02/1.60 valves?

Reply Subscribe

Thread Tools

Search this Thread

Jan 4, 2007 | 07:38 PM

6spd95

Thread Starter

Heel & Toe

Joined: Dec 2006

Posts: 21

Likes: 0

2.02/1.60 valves?

202/1.60, Can they be used on stock LT1 heads? I heard somewhere that the biggest valves that fit stock seats are 2.00/1.56. can anybody confirm this??

Jan 4, 2007 | 08:00 PM

Ttime

Burning Brakes

Joined: Jan 2006

Posts: 847

Likes: 0

From: Colorado Springs CO

I'm not sure about stock heads and I heard the same but don't have first hand experience . But I know Trick Flow has a set.

Jan 4, 2007 | 10:42 PM

VenkmanP

Safety Car

Joined: Apr 2003

Posts: 3,793

Likes: 9

From: VA

Quote:

Originally Posted by 6spd95

202/1.60, Can they be used on stock LT1 heads?

Yes, with new seats.

Jan 4, 2007 | 10:52 PM

Jonnymac

Melting Slicks

Joined: Oct 2005

Posts: 3,178

Likes: 5

From: Daleville Indiana

St. Jude Donor '08

The stock heads that I've looked at have the 1.60 valves cut down to 1.56 or 1.55. Never seen one that had a real 1.60 valve. Just no room.

Last edited by Jonnymac; Jan 4, 2007 at 10:55 PM.

Jan 4, 2007 | 11:29 PM

VenkmanP

Safety Car

Joined: Apr 2003

Posts: 3,793

Likes: 9

From: VA

Quote:

Originally Posted by Jonnymac

The stock heads that I've looked at have the 1.60 valves cut down to 1.56 or 1.55. Never seen one that had a real 1.60 valve. Just no room.

pretty much all the big name LT1 porters offer both 1.55/56 and 1.60

For instance:
http://eportworks.com/LT1LE3.htm

Jan 4, 2007 | 11:50 PM

Zix

Le Mans Master

Joined: Jul 1999

Posts: 8,683

Likes: 6

From: Phoenix AZ

Here's a picture of my stock LT4 castings with 2.055/1.6 valves and a lot of combustion chamber work...

Jan 4, 2007 | 11:51 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,263

Likes: 86

From: O'Fallon Missouri

My CNC Cylinder Heads LT1 heads have 2.0/1.57.

Jan 5, 2007 | 10:20 AM

6spd95

Thread Starter

Heel & Toe

Joined: Dec 2006

Posts: 21

Likes: 0

well replacing the seats is out of the question, that would be to much money. So I guess I'm going with the 2.00 and 1.56 . one reason I wanted to do this is because these heads have had previus valve jobs and the valves are begining to sink. by putting bigger valves will bring them back up a little.