The guys at UMI were very cool to talk to on the phone last week. 
Katech-built LS7 makes 655hp 579ft/lbs NA!
Katech-built LS7 makes 655hp 579ft/lbs NA! Katech LS7 shortblocks with forged pistons used by UMI Racing to make 655 hp & 579 ft-lb torque. It used Katech 12:1 forged pistons and high-modulus rod bushings. Camshaft used TBA. It was run with UMI Racing Technology tunable Mefi 4B ECU, Throttle Body and dry sump adapter.
...more to come as other camshafts are tested.
http://www.katechengines.com
http://www.umiracing.com
...more to come as other camshafts are tested.
http://www.katechengines.com
http://www.umiracing.com
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
Originally Posted by MaxxMitchell
Do you guys think 700hp is out of the question? Any plans to touch the heads?
On The Tree
Joined: Dec 2004
Posts: 124
Likes: 0
From: Northville, Michigan
Jason,
I have a few questions about the data shown on the dyno sheet:
1) How do you maintain 121 to 125 degree F oil temperature?
2) Why did you hold the oil temperature so low when you would make better power if the oil temp were in the 180 to 200 degree F range?
3) Why is the oil pressure so high?
4) What octane fuel was used for this dyno run?
.
I have a few questions about the data shown on the dyno sheet:
1) How do you maintain 121 to 125 degree F oil temperature?
2) Why did you hold the oil temperature so low when you would make better power if the oil temp were in the 180 to 200 degree F range?
3) Why is the oil pressure so high?
4) What octane fuel was used for this dyno run?
.
Last edited by Pumba; Jan 9, 2006 at 06:16 PM.
Teching In
Joined: Dec 2005
Posts: 43
Likes: 0
From: Scottsdale, AZ
Headers - 1 3/4 stepped to 1 7/8, 4 into 1
Oil Temp - Temp was not reading.
Oil Pressure - We are running 15W-50 Mobil. Plus, these things have high pressure to begin. It is not uncommon to see 75-90 lbs at idle cold with this oil.
Sunoco 110
Oil Temp - Temp was not reading.
Oil Pressure - We are running 15W-50 Mobil. Plus, these things have high pressure to begin. It is not uncommon to see 75-90 lbs at idle cold with this oil.
Sunoco 110
TECH Apprentice
Joined: Oct 2004
Posts: 329
Likes: 0
Numbers pretty much flattened at 6300 RPM even though peak is at 6800.
I wonder if this is a restriction, or simply as much as this camshaft allows.
For the intake, mentions something about a throttle body. Is it a 8 runner IR intake or the LS7 intake mani?
1 3/4" to 1 7/8" step sounds great.
My guess is this is still a hydraulic roller camshaft with high but not very high duration numbers, IE - prolly 235-240@.05" on the intake side.
700HP will prolly be crossed with the LS7 intake.
Anyone flown a LS7 intake by itself? With the heads?
The 575 TQ extrapolates to 505rwtq 6speed. Will we see more? 530-540rwtq?
I wonder if this is a restriction, or simply as much as this camshaft allows.
For the intake, mentions something about a throttle body. Is it a 8 runner IR intake or the LS7 intake mani?
1 3/4" to 1 7/8" step sounds great.
My guess is this is still a hydraulic roller camshaft with high but not very high duration numbers, IE - prolly 235-240@.05" on the intake side.
700HP will prolly be crossed with the LS7 intake.
Anyone flown a LS7 intake by itself? With the heads?
The 575 TQ extrapolates to 505rwtq 6speed. Will we see more? 530-540rwtq?
Originally Posted by Big-DEN
Numbers pretty much flattened at 6300 RPM even though peak is at 6800.
I wonder if this is a restriction, or simply as much as this camshaft allows.
For the intake, mentions something about a throttle body. Is it a 8 runner IR intake or the LS7 intake mani?
1 3/4" to 1 7/8" step sounds great.
My guess is this is still a hydraulic roller camshaft with high but not very high duration numbers, IE - prolly 235-240@.05" on the intake side.
700HP will prolly be crossed with the LS7 intake.
Anyone flown a LS7 intake by itself? With the heads?
The 575 TQ extrapolates to 505rwtq 6speed. Will we see more? 530-540rwtq?
I wonder if this is a restriction, or simply as much as this camshaft allows.
For the intake, mentions something about a throttle body. Is it a 8 runner IR intake or the LS7 intake mani?
1 3/4" to 1 7/8" step sounds great.
My guess is this is still a hydraulic roller camshaft with high but not very high duration numbers, IE - prolly 235-240@.05" on the intake side.
700HP will prolly be crossed with the LS7 intake.
Anyone flown a LS7 intake by itself? With the heads?
The 575 TQ extrapolates to 505rwtq 6speed. Will we see more? 530-540rwtq?
Thats a production LS7 intake with UMI TB.
