Will I be happy?
10-02-2006, 04:15 PM
#12
I've heard the best RPM to cruise at for gas mileage in these motors is 1800-2000 RPM. Before with 3.42's, I was cruising at 1600 at 65 mph. Now it is 1900 at 65 mph and I get better mileage on the highway. I get worse around town because I can't keep my foot out of it!
10-10-2006, 10:01 PM
#16
formerly silverbrick (changed 02/17/2013)
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you dont need the tune to run them i ran 4.10's with out a tune for a few months and it was easy. when you were maxing out the speedo at 100 though you'd only be going ~78 or ~88 cant remember.... i love em
10-10-2006, 10:09 PM
#17
Launching!
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wow... how much time off an 8th would 4.10's and a tune cut off?
Also where did you get your 4.10's(for how much too) and did your gas mileage change?
Also where did you get your 4.10's(for how much too) and did your gas mileage change?
10-10-2006, 10:12 PM
#18
formerly silverbrick (changed 02/17/2013)
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i had my rear end done by pyle bros in baytown for 600 parts and labor i have no idea how much it would cut off the 1/8, never been to the track. gas milage will be worse but you cant get much worse than what i already have
10-12-2006, 11:27 PM
#19
On The Tree
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When I switched from 3.42's to 3.73's, I didn't have a tune for a couple of months. I didn't have any shift problems. It drove just like stock except for the speedo being wrong. It did liven acceleration up a lot and as with the guys above, I actually improved gas mileage. Later, I got a 3200 stall, but had the tune and never drove it without the tune, so I don't know about that. I do wish, however, that I had bought 4.10's and will probably do that somtime in the future.
Last edited by Chevy_Truck_Man; 10-12-2006 at 11:28 PM. Reason: typo
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