NO wonder I get good gas mileage then. lol

 

Here's an interesting image showing the powercurve:

http://eogld.ecomm.gm.com/images/lig...LU3_Sierra.gif

Located it in another thread:

https://blazerforum.com/forum/2nd-ge...ant-tow-68810/

 

Thats about right when it shifts at 5500 it will keep it in the power band.

 

I often let mine turn at 5500 rpm. If i didnt trust it i wouldnt..




(Now wait for a "i blew my engine" thread )

 

Lol well i do too.. I dont really feel bad for my engine when it hits 4k rpm but more so my wallet.

 

Was googling around for the engine weight and found this:Chevy Engine Guide

it lists the redline at 5000 rpm... but the max auto trans shift speed and fuel cut off at 5200 rpm

(on a different comp and wanted the link for myself later too )

 

I've read an article that is floating around on the web, it says that 7k is do able on a non balance shaft engine with a full roller valve train. I believe it was on a hot rod site talking about a 300 HP 4.3L v6 build. Pretty sure they achieved it, and discussed a few options for getting there.

I found it!!
http://www.hotrod.com/techarticles/e...d/viewall.html

I re-read it and they only report going to 6k rpm. I also found another about building the 4.3L:
http://www.hotrod.com/pitstop/hrdp_0...6_performance/

 

Nice find.

 

Nope, you are not, i would put money we baby the jimmy more LOL

 

I've gone up to 5500 sometimes lol. Usually though just 3500 about