so im lookin into finally beefing up my 360. i've heard about the HS 1.7 rockers and from what i've heard alone i too swear by them. so im looking into the HS 1.7s heads 2.02 exhaust 1.62 or 1.92 intake i think. longtube headers and an SCT. for the exhaust an x-pipe to duels out the rear. and i've got the 3.55's. what kind of numbers should i expect at the wheel and crank. i want the max torque numbers at around 2000rpm.

i think i hit the all around upgrades anything i missed.

P.S. what kind of mileage will i see im running about 18mpg now<----not kidding on the mpgs

 

Not too sure about all the motor questions and such, but the MPG's got me laughing (wheres my waders?)

Seriously though... 18?!?!?!?

 

Are you running by cold hard math or by the overhead computer?

And if you are doing the cold hard math, so many people go by their gas gauge, which is wrong. I've run into so many people that say "I have half a tank left according to my gauge, I have a 26 gallon tank, therefore I used 13 gallons." You can't do that, an analog gauge is always going to be off, never exact.

The only way to calculate MPGs is to use your trip computer. Miles driven divided by gallons put in at the pump.

18 MPG means that you would have to be getting over 450 miles to a tank. Maybe, maybe with the 318 (5.2L) on a really good day with the wind pushing you on the highway, but not with the 5.9L.

Sorry bud, but I'm throwing the B.S. flag out unless you can throw some good, hard numbers on here to prove it.

 

Haha even my 5.2 wont get that... I have hit 430 on one tank before, but I have the 34 gallon tank ( and that was bottom of the barrel)

 

18mpg? what did you do, take all the body panels off and chop off some of the frame? the best i've seen on mine was 15 (averaged 14 at the time) but that was when it was stock and just had a drop in k&n filter. it was sitting on 285 70 17s at the time too. my average now is 13mpg with smaller tires (255 70 17) and a few other mods, i'm still waiting to see what the air hat does to my mileage.

when you're doing the roller rockers you ought to throw a hughes belly plate on your intake manifold and do the kegger mod at the same time or get an air gap, and get the fastman throttle body.

 

i calc the mpg by a full tank i dont average and the pump. mostof my driving is in town. its like 85/15 highay\town ill post some number in a few days when my tank runs out.

 

Sorry bud, but unless you have made some modifications to that truck, I am throwing down my BS flag too. I can drive at 60MPH with my 5.2 and get about 16.3 MPG. That is on a 100% highway drive. Your talking doing 85% city driving and getting 18???? I just can't believe it..... Pics or it doesn't happen

 

I hit 17.4 *once* on my 5.2L with the 26gal tank. However, I don't think he's calculating properly with results of 18mpg on the 5.9L.


That aside, a cheap, mild mod would be porting and polishing the heads and getting a Fastman TB.

 

okay 456.2/26 = 17.5462.... told ya well its almost 18 its 91 octane with.... the only thing ive done is a k&n drop in a custom exhast (dumps before the axle) and gapped the plugs at .045