Gas milage drop going from 3:23's to 4:10's

Got me beat. My city/highway average is 16 or 17 with a 4.3 with cold air intake, flowmaster, all synthetics, and the tb mod.

You need more torque. I suggest a 6.0.

Quote:

---

Originally Posted by AKlowriderZ71

I replaced the 3.42's with 4.10's in my '99 Z28. Went from 29 MPG hwy to 24 MPG hwy, but got me into the high 11's.

---

samething happen to a friend here, hit him from 22 down to 18 mpg hwy, pay to play

I have 3 choices right now: 5.3, Ls1, or 6.0. If money was no issue i would get the supercharged Cadillac Northstar 4.4L

Don't forget the s/c LS9 if money were no object. :laugh:

If money was no object I guess I could go with a twin turbo 572.... or just have two 4.3 engines in line with the 2nd in the bed. You have to admit that a sc 4.4 liter Northstar would be unique... and with 469 horsepower it would embarass just about any 5.3 or 6.0 I passed.

Quote:

---

Originally Posted by yournamehere018

If money was no object I guess I could go with a twin turbo 572.....

---

Talk about being able to pass everything but a gas station :laugh:

haha. Well I guess you could put a couple fuel cells in the bed.... it would help with traction.:LOL: