Thinking of switching out camshaft to improve mpg please chime in
#11
Admin
iTrader: (22)
Lower LSA brings the power down, raising the LSA raises the curve. A 117lsa cam will make power at a higher RPM then a 112lsa. I agree with what you are saying as far as higher LSA (Less overlap) having a positive effect on mileage but it will also take away from the bottom end some. Something along the lines of a 115-116 is kind of a happy medium in my opinion.
#12
Lower LSA brings the power down, raising the LSA raises the curve. A 117lsa cam will make power at a higher RPM then a 112lsa. I agree with what you are saying as far as higher LSA (Less overlap) having a positive effect on mileage but it will also take away from the bottom end some. Something along the lines of a 115-116 is kind of a happy medium in my opinion.
#14
So why do u need a high stall converter with a (example) 224/227 .600/.610 112 lsa cam?? Based on the assumption that it will make more torque down low a high Stallman should not be needed.
#16
Admin
iTrader: (22)
Technical Specs & Information
#18
On The Tree
iTrader: (3)
As for the OP, I have a 216/223 on a stock converter / 5.3 getting 18.5 if I'm lucky... of course, if I would back off of 80 mph, it would probably get a little better.
#19
Admin
iTrader: (22)
Stock cam- 192/198 .476/.482 116lsa
If you only changed the LSA and left the other specs the same, a lower LSA would shift the torque curve down. Now in your question, yes the LSA is lower however you are also comparing a cam that has over 30 degrees more duration then stock. Adding 30 degrees duration will shift your torque curve up, a high intake duration will especially move the curve up.
Also as you know cubes eat up a cam so to speak, a big cam in a 4.8 is a somewhat mild cam in a 5.3 and tame in a 6.0