What kind of power should my LM7 make with this setup?
10-03-2012, 01:25 PM
#2
TECH Resident
Impossible to tell since every engine is different and changes with age. But a brand new 5.3 has about 330 hp. LS1 intake will actually lose a little HP over the truck intake. Headers will help some, probably 20 HP or so. 3" is too big for exhaust unless you are putting down 400+ HP.
10-03-2012, 02:48 PM
#3
Impossible to tell since every engine is different and changes with age. But a brand new 5.3 has about 330 hp. LS1 intake will actually lose a little HP over the truck intake. Headers will help some, probably 20 HP or so. 3" is too big for exhaust unless you are putting down 400+ HP.
10-03-2012, 03:27 PM
#5
TECH Resident
Do any search about exhaust size and horsepower and you will come up with pretty much exactly what I said. Here is just one example from Flowmaster
http://www.flowmastermufflers.com/index.php?page=54
http://www.flowmastermufflers.com/index.php?page=54
10-03-2012, 07:09 PM
#6
Single 3" - Y-Pipe.
I dunno. Stock FBodies are 2.5inch and can gain around 25-30 rwhp with a full 3" exhaust so I doubt 3" is anything close to too much unless you're talking true duals.
Do any search about exhaust size and horsepower and you will come up with pretty much exactly what I said. Here is just one example from Flowmaster
http://www.flowmastermufflers.com/index.php?page=54
http://www.flowmastermufflers.com/index.php?page=54
Last edited by Need4Camaro; 10-03-2012 at 07:15 PM.
10-03-2012, 07:39 PM
#7
TECH Resident
If there's a 3" exhaust system that can get you 30 HP at the wheels, by all means bolt it on....but I am thinking those numbers are a little high. LT Headers are only good for a 10% gain at most, and that's the most effective thing you can do for an exhaust.
