Project "Blown HD" my 6/8 drop/shortblock/heads/cam/blower/tranny install
11-01-2006, 08:57 PM
#313
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How is that? You just posted two different readings.
You have a 5* pinion angle. Actually yours should be -5* like you stated above.
Looks like GM gave you too much of a negative pinion angle.
At least that's what it seems after reading my link.
Your HP is low anyways!
It needs to like a 0* for that weak engine. 
It stated that (assuming this is the kind of power you will be making) when producing 500-650HP, you should only have 3-1/2 to 4-1/2 * of pinion angle.
I'm assuming there talking negative pinion. Meaning nose of diff dipping more towards the ground.
What do you think?
Jim
You have a 5* pinion angle. Actually yours should be -5* like you stated above.
Looks like GM gave you too much of a negative pinion angle.
At least that's what it seems after reading my link.
Your HP is low anyways!
It needs to like a 0* for that weak engine. It stated that (assuming this is the kind of power you will be making) when producing 500-650HP, you should only have 3-1/2 to 4-1/2 * of pinion angle.
I'm assuming there talking negative pinion. Meaning nose of diff dipping more towards the ground.
What do you think?
Jim
11-01-2006, 09:01 PM
#314
Originally Posted by CHEVY6000VHO
How is that? You just posted two different readings.
You have a 5* pinion angle. Actually yours should be -5* like you stated above.
Looks like GM gave you too much of a negative pinion angle.
At least that's what it seems after reading my link.
Your HP is low anyways! It needs to like a 0* for that weak engine.
It stated that (assuming this is the kind of power you will be making) when producing 500-650HP, you should only have 3-1/2 to 4-1/2 * of pinion angle.
I'm assuming there talking negative pinion. Meaning nose of diff dipping more towards the ground.
What do you think?
Jim
You have a 5* pinion angle. Actually yours should be -5* like you stated above.
Looks like GM gave you too much of a negative pinion angle.
At least that's what it seems after reading my link.
Your HP is low anyways!
It needs to like a 0* for that weak engine. It stated that (assuming this is the kind of power you will be making) when producing 500-650HP, you should only have 3-1/2 to 4-1/2 * of pinion angle.
I'm assuming there talking negative pinion. Meaning nose of diff dipping more towards the ground.
What do you think?
Jim
I will unload my Caltracs and see if that changes anything, probably will.
11-01-2006, 09:06 PM
#315
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Originally Posted by moregrip
I understand it a little differently, mainly that its the relationship between the differential angle and driveshaft angle thats critical(i.e. pinion angle). Are you saying in addition to being between 3.5* and 4.5* the diff should be pointed down?
I will unload my Caltracs and see if that changes anything, probably will.
I will unload my Caltracs and see if that changes anything, probably will.
I bet your diff angles change after doing so.
Yes, your diff should be pointing downward. When you accelerate, the diff will be wanting to twist upwards. You really don't want it to go much past 0* if any at all under acceleration.
That's what I got out of my link that I posted above.
Jim
11-01-2006, 09:09 PM
#316
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That's why the Caltracs work. They take the twisting force of the diff to raise up the front and plant the trear tires into the ground!
Just felt like saying that! 
Jim
Just felt like saying that!
Jim
11-01-2006, 09:12 PM
#317
Originally Posted by CHEVY6000VHO
That's why the Caltracs work. They take the twisting force of the diff to raise up the front and plant the trear tires into the ground!
Just felt like saying that!
Jim
Just felt like saying that!
Jim
11-01-2006, 10:39 PM
#318
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Originally Posted by moregrip
mine are coming off, tired of all the freakin noise, going to a ladder bar setup similar to what the Lightning guys use
The Caltrac Pics post has it in there about eliminating the noise.
Just thought I let you know before you ditched them.
What exactly are the Lightning guys using?
Any pics of it? Sounds like totally fabbed components.
Jim
11-01-2006, 10:42 PM
#319
Originally Posted by CHEVY6000VHO
Place a rubber hose over the pin that rests on top of the leaf springs. The noise goes away so I hear.
The Caltrac Pics post has it in there about eliminating the noise.
Just thought I let you know before you ditched them.
What exactly are the Lightning guys using?
Any pics of it? Sounds like totally fabbed components.
Jim
The Caltrac Pics post has it in there about eliminating the noise.
Just thought I let you know before you ditched them.
What exactly are the Lightning guys using?
Any pics of it? Sounds like totally fabbed components.
Jim
11-02-2006, 12:09 AM
#320
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Originally Posted by moregrip
for my setup the rubber tube would help but wouldn't eliminate the squeeking I get from the plates rubbing against the side of the leaf springs
Too bad a grease sert couldn't be added at the eye.
Sounds like a possible problem.
Jim