Photos of headers fitted.

 

Does it bolt up to stock exhaust?

 

Hi Telemike it bolts straight onto the stock engine pipe and you can reuse the fibre gasket at the flange, there is quite a tinny sound due to the stainless steel being thinner than the cast manifold, they are also heaps lighter then the stock manifold.

 

hi, new here below is a link to a free pdf of GM hummer h3 3.7 engine. pass it on if anyones looking for it,, I know I was. just found it tonite.

have a good one.

http://schwarttzy.com/wp-content/upl...nical-3.7L.pdf

 

pdf is identical to part of manual I paid to download yrs ago. it covered the entire h3 for cheap

 

that looks very similar to the one i installed. i used this.....Colorado: Header Shorty Style for Chevrolet Colorado 5-cylinder, Colorado Conversion, Stealth Conversions.
I noticed a differance in power right away.
do you have a link on where you got your blower? i would love to have one!!

 

Unfortunately Walkinshaw Performance don't do the supercharger kit for Hummer H3 anymore, they only did a limited run and I bought the last one. You could look up Harrop Engineering as they were the manufacturer.