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what is the rocker ratio? i forgot

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1.62

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what is the rocker ratio? i forgot

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1.62

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what is the rocker ratio? i forgot

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1.62

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Is this the ratio for all Gen III HEMI'S? Also, what exactly is the problem with the rockers when the lift gets over the .600" mark? Bad geometry? Rockers start to fail?

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Are there lash caps and locks that would help fix the valve train geometry? I figure that a lash cap would help put the rocker tip closer to where it needs to be for the higher lift.

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Steff, So your using a G4 block with a G3 crank? Did you have to do any work on the crank snout or will your custom cam belt drive eliminate that?

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Looks good Steff!

I am relatively new to the late model stuff and fuel injection, but I do wonder if the cam position sensor arangement (That wheel on the camshaft pulley and sensor) could be made more compact and aesthetically pleasing? If I had a core engine to try it on, I would give it a go atleast.

Keep us up to date on your progress, I have always been a fan of your builds!

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I'm not really happy with the "look" of the cam sensor arrangement either. I don't really know that much about cam sensors & trigger wheels and that is something I need to address. The stock stuff is on there out of necessity. I'd LOVE to clean up the front the engine, but for now, I have to use it.

Thanx!!

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Making some progress. Short Block is almost finished. Just need to degree Cam in and install Oil Pan and it's done.

Torquing Rods Bolts. I really like the Bolt Stretch method over using a Torque Wrench. Basically, the torque number is meaningless........stretch the bolts to .006" and DONE!!


Belt Drive is installed and tomorrow I will be degreeing the Cam in. Once the Heads and Rockers are on, I will re degree, to see if the overall spring loading changes the cam centerline position.

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Looking good I have a ? for you.
Have you tried to put the G3 cam inside your G4. I know the front bearing is larger in the G4 but was wondering if the rest was the same?
The reason I was asking was that I was thinking of a front spacer to run a G3 cam IN the G4 block.

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Spacer alone will not cut it. The length of the cam is different as well. You'd have to make a snout for the G3 cam to compensate for the difference in length and diameter. Then that snout would have to be pressed onto the G3 cam prior to final journal grinding to make sure all journals are concentric to each other. I've been thru this thought process. I even cosidered machining the front of the block to open up the front of the block like the G3 front is and then spacer the bore for a G3 front cam bearing. The problem with doing that is they redesigned the front cooling passages as well, so with the machining needed, it would blow right into the relocated cooling passages. Then, in order to fix that , you'd have to look at redirecting the coolant in the heads from where these original passaged flowed to. Again, I've been thru all of this thought process and the G4 & G3 blocks are different in front that they require their own specific parts.

This is why I had LSM machine up a custom cam core. The $800 for the cam was cheaper than all the cobbling up that would be needed to avoid it.

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Spacer alone will not cut it. The length of the cam is different as well. You'd have to make a snout for the G3 cam to compensate for the difference in length and diameter. Then that snout would have to be pressed onto the G3 cam prior to final journal grinding to make sure all journals are concentric to each other. I've been thru this thought process. I even cosidered machining the front of the block to open up the front of the block like the G3 front is and then spacer the bore for a G3 front cam bearing. The problem with doing that is they redesigned the front cooling passages as well, so with the machining needed, it would blow right into the relocated cooling passages. Then, in order to fix that , you'd have to look at redirecting the coolant in the heads from where these original passaged flowed to. Again, I've been thru all of this thought process and the G4 & G3 blocks are different in front that they require their own specific parts.

This is why I had LSM machine up a custom cam core. The $800 for the cam was cheaper than all the cobbling up that would be needed to avoid it.

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Spacer alone will not cut it. The length of the cam is different as well. You'd have to make a snout for the G3 cam to compensate for the difference in length and diameter. Then that snout would have to be pressed onto the G3 cam prior to final journal grinding to make sure all journals are concentric to each other. I've been thru this thought process. I even cosidered machining the front of the block to open up the front of the block like the G3 front is and then spacer the bore for a G3 front cam bearing. The problem with doing that is they redesigned the front cooling passages as well, so with the machining needed, it would blow right into the relocated cooling passages. Then, in order to fix that , you'd have to look at redirecting the coolant in the heads from where these original passaged flowed to. Again, I've been thru all of this thought process and the G4 & G3 blocks are different in front that they require their own specific parts.

This is why I had LSM machine up a custom cam core. The $800 for the cam was cheaper than all the cobbling up that would be needed to avoid it.

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Do up have a picture of the G4 and G3 cam side by side so we can get a visual on the differences? Or at least a pick of the G4 cam so I can compare it to my 6.1 cam I have here?

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Sure can, but not till I get home later.