hummer H1 headers and crossover Q??

[desertrat67]

Has anyone put the hummer headers (6.2 and 6.5 na diesel) and exhaust crossover into an 80's truck? I am contemplating this since i am trying to clock my t-case up and the right side exhaust would be in the way. The crossover is smoothly bent and runs dirrectly under the torque converter cover joining into the left side exhaust. It has a heat shiled welded onto it between the converter cover. All three mounting points on the x-over are bolt on using 3 bolts each making it easy to get it out of the way if you need to access the tranny front or engine rear.

 

[desertrat67]

this is a pic of the right side, the left curves downward.

 

[kennyw]

Looks like the right side will go straight into your firewall...

 

[BKinzey]

Wanna try? I've got a like new set I'll sell you for $50 + shipping. I was going to use them until I picked up a turbo. I've never tried to fit them and my motor's out now.


9/12/06 These are sold, sorry.

 

[kennyw]

Thats ok, don't need them.

 

[BKinzey]

Actually I was talking to DesertRat

 

[MEK5]

Wanna try? I've got a like new set I'll sell you for $50 + shipping. I was going to use them until I picked up a turbo. I've never tried to fit them and my motor's out now.

If DesertRat doesnt want them I will buy them,been looking for some of those!

Thanks

 

[desertrat67]

MEK5, go ahead if oyu want them. I am a little way away from that part of the project. Just trying to find info on the fitment.

 

[dieselponyexpress]

Only one side will fit in c/k trucks. On the other side (passenger side iirc) the framerail is in the way.

Walter

 

[BKinzey]

Look at the above pic. If the frame is in the way it has to be the driver's side

So MEK5, did they fit? Firewall or frame in the way? Possibly both?

 

[79k20350]

Look at the above pic. If the frame is in the way it has to be the driver's side

So MEK5, did they fit? Firewall or frame in the way? Possibly both?

Ummm...no that would ve the passanger side, the side facing the camera. it comes out too wide

 

[muddybuddy]

what would be a benefit of running these headers vs stock style?

 

[BKinzey]

Same idea as putting headers on a gasser. Smooth pipes for less restriction. Although as far as quality goes the HMMVs I had were pretty crappy built. If you looked into the collector you could see the individual tubes jutting 1/2" to 1" into the collector.

 

[MEK5]

Look at the above pic. If the frame is in the way it has to be the driver's side

So MEK5, did they fit? Firewall or frame in the way? Possibly both?

Wow,I must have missed this months ago.I decided to see if the headers would work since my trucks all apart for new exhaust,transfer,etc.etc.

I did a search and read that one of the headers would hit the frame rail and found this to be correct.The driverside hangs to low and wide and will hit the frame rail/motor mount pedestal.
The pass side appears like it will clear the frame but I had to remove the heat sheild to get it in place and the flange is just about touching the starter solenoid.If you remove the flange and put a elbow there I think you could get this side to work out with no firewall issues.

I used a core motor I have on a stand to mock this up and then compared measurements to the truck.Heres some pics to better show how the stock manifolds sit compared to the headers.I decided not to use them,to many headaches!