MTI Stage IIR LS6 heads FS - F-Body Road Racing and Autocross Forums

I am unloading my MTI Stage IIR LS6 heads because I am moving to a new combo on the next motor. These heads made KILLER power with an X1 cam. Dyno on a full bolt on car THROUGH A MOSER "9 was 430rwhp and 406rwtq. On a 10 bolt car that would be a 450rwhp configuration. This was also done on a CANNED TUNE! There is more there if I could have refined the tune a little better but I did not have Edit or HP Tuner.

SPECS:

MTI Stage IIR LS6 heads
Milled .030
2.055 int (Ferrea)
1.60 ex (Ferrea)
Custom retainers
ISKY double spring
Intake Port: 237cc
Ex Port: 85cc
CC: 58cc
Flowed .317 @ .600

Less than 4K miles on these heads.

One of the valves MAY need to be replaced along with the retainers and keeper for that valve. I had a rocker arm botl break and the valve tip took a couple of whacks. I will get pictures of this ASAP for anyone that wants them. If you purchase I will make sure you get a new valve if you deem nessacary or you can get it on your own through MTI.

Price: $2200 OBO. don't settle for cheap heads, you get what you pay for.

NataSS Inc View Member Profile	Nov 2 2004, 05:51 PM Post #1
Advanced Member Group: Advanced Members Posts: 827 Joined: 30-December 03 From: Bellevue WA Member No.: 73	I am unloading my MTI Stage IIR LS6 heads because I am moving to a new combo on the next motor. These heads made KILLER power with an X1 cam. Dyno on a full bolt on car THROUGH A MOSER "9 was 430rwhp and 406rwtq. On a 10 bolt car that would be a 450rwhp configuration. This was also done on a CANNED TUNE! There is more there if I could have refined the tune a little better but I did not have Edit or HP Tuner. SPECS: MTI Stage IIR LS6 heads Milled .030 2.055 int (Ferrea) 1.60 ex (Ferrea) Custom retainers ISKY double spring Intake Port: 237cc Ex Port: 85cc CC: 58cc Flowed .317 @ .600 Less than 4K miles on these heads. One of the valves MAY need to be replaced along with the retainers and keeper for that valve. I had a rocker arm botl break and the valve tip took a couple of whacks. I will get pictures of this ASAP for anyone that wants them. If you purchase I will make sure you get a new valve if you deem nessacary or you can get it on your own through MTI. Price: $2200 OBO. don't settle for cheap heads, you get what you pay for.

NataSS Inc View Member Profile	Nov 4 2004, 05:01 PM Post #2
Advanced Member Group: Advanced Members Posts: 827 Joined: 30-December 03 From: Bellevue WA Member No.: 73	Just to put any questions to rest. These heads are not "busted". They are in perfect working order. The valve tip is "scuffed". This problem happened at an Open Road Race. I had it back up and running the following day and the car still averaged 127mph over 47 miles with cruising speeds of 150mph for extended periods with more left in it. The replacement parts ar 40.00 through MTI. Once those go in these heads will be in "as new" condition.