OK guys my 2005 , what would happen if i drove it for a thousand miles at 80 85 miles an hour, and the motor having 200 miles , would it be a fast truck or what.?

 

Its best to break it in not making WOT runs and varying your speed not holding a certain RPM for vey long.Sounds like you'v been beating on it so this info is pretty useless.
2005 CREW CAB
5.3 3.73 G80 STock
shifting at 5800 all the time!!
this thing is fast!


Funny how people have different preceptions to what there idea of fast is.

 

15 flat can feel pretty fast Gonz.

 

this is what i did...
city, vary mph's for about 500 miles >change oil

city miles for the next 2000
maybe occasionally run it up to 70
and then back down pretty easy

first 3 oil changes were at 2000

runnin it hard out the box wont make it any faster

good luck

 

15flat?Ya i guess you can say thats fast for a 5.3 CC.Like I said everyone has a different opinion of what fast means in a truck,I say low 13s and you are starting to get there.10s,now thats 'f'n fast.

 

damn 5.3 racer 16
youve been through alot of trucks

damn, Ive lost count
list em

 

This is how I broke in my old 2000 Camaro SS. Pulled out of dealer lot and FLOORED IT!!!

I took it to the track about a couple weeks later in good air and clicked off a 13.15 @ 106+ Bone stock. The motor ran absolutely fine until I wrecked it.

I did the same thing with my 2001 Camaro SS and took it to the track a few weeks after buying it and ran a 13.3 in the 90 degree heat. In good air it would've killed the '00.

I don't believe in that mild break in stuff at all, seen too many vehicles beaten on right from the get go run strong for hundreds of thousands of miles.

This is all just my opinion though.

 

It ran a 15 flat dead stock? ****, that's faster than my Hemi Ram.
Jim

 

its faster than the 99 alredy. and beat the 5.9 grand cherokee that whooped my *** in the 99.

 

The hemihead guys wont believe it.For me I take it easy for 500 miles (just a couple of short blasts) then oil/filter.Then your ready to go tow and do more blasts then at about 1200 miles do what ever.You may never know what long term effect difference it makes.The OE specs have a wide range of tolorences,get one on the tight side and you could do damage on a long hard run and problems may not show until years later. Years ago I broke a couple motors during the new car pre-delivery inspection.When I go buy new I take one with 3-7 miles on it,we all know what people do on test drives,treat them like rentals.