icanfixall
Official GMM hand model
Yes. They are exactly the same. Most every part of the 6.9 is the same as the 7.3 engine. Every bolt hole is drilled the same and same threads.Are cams for the 6.9 and the 7.3 idi's interchangeable?
Yes. They are exactly the same. Most every part of the 6.9 is the same as the 7.3 engine. Every bolt hole is drilled the same and same threads.Are cams for the 6.9 and the 7.3 idi's interchangeable?
Has anyone ever tried using the specs of the 3208 cam to build one for our engines?
But why? More goes into it then, "oh this engine makes more torque, let's copy the specs."
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Most here aren't throwing in pistons with valve reliefs. Iirc, the issue is piston to valve clearance. I think was said would need a one off cam from scratch. Which brings up 2 issues; 1. Cost. Most wont be willing to pay that. 2. Cam shops not wanting to do small runs.I used to build race engines and a lot if the time we would custom order a cam based off the specs for other engines. I asked a legitimate question if anyone had considered it because one of the biggest concerns for any engine is getting the damn thing to breath. I didn't ask for smart a** reply.
Most here aren't throwing in pistons with valve reliefs. Iirc, the issue is piston to valve clearance. I think was said would need a one off cam from scratch. Which brings up 2 issues; 1. Cost. Most wont be willing to pay that. 2. Cam shops not wanting to do small runs.
Maybe Russ or Wes could chime in, but I believe that was the last "update."
The heads themselves flow pretty well.
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Like Jasper said the VtP is very tight. I can give you the specs out of the international manual if you need it.My line of thought is this, the 3208 and 6.9/7.3 idi share some of similarities. Not saying it would be easy and require other work to be done to the engine for valve clearance be it rods or pistons. The two engines have a huge difference in CR and to create the needed valve clearance would be a fair drop in the idi but the increased flow in theory should make up for that if the drop isn't too drastic. From what it looks like to me and I could be wrong is the specs from the 3208 would be a good start point and probably bring the lift down a little. Using Mahle pistons that reduce the CR may be sufficient for valve clearance. There are 3 different cams for the 3208 the one I'd use for the base line is the one for the 3208TA forged roller cam. I wish we still had our shop I'd be working on it myself.
Like Jasper said the VtP is very tight. I can give you the specs out of the international manual if you need it.
For where you're thinking is at.. I would use Justin's(rd idi) as a starting point and tinker with it from there if you are familiar with blueprinting gas engines and have software.
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