Few questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Spray-Bomb · 03-09-2008, 11:16 AM

Ok, I have a few questions here

#1 How much can I notch the frame & still be strong enough to haul something around 3-4 thousand pounds ??? (I plan to plate the top / sides & box the inside, & use a piece of 4" 1/4" wall pipe) I just need to know how deep I can make it & still be safe

#2 At what point is it advantageous to flip over the trailing arm mounts ??? (I have a one piece drive shaft, so I don't have a carrier bearing to flip)

#3 What is the optimum angle for my shocks to run at (I am building new shock mounts)

#4 Last but not least, if you were building a long panhard bar to run from the frame to the passenger side trailing arm would you use rubber bushing syle ends or heim joints ???

Thanks, Matt

P.S. I do not want a step notch, just something I can build that is hopefully deeper than a bolt in notch

Spray-Bomb · 03-10-2008, 05:38 AM

ttt

SCOTI · 03-10-2008, 10:20 AM

Quote:

#1 How much can I notch the frame & still be strong enough to haul something around 3-4 thousand pounds ??? (I plan to plate the top / sides & box the inside, & use a piece of 4" 1/4" wall pipe) I just need to know how deep I can make it & still be safe

I wouldn't go more than 2/3 of the height of the frame (3" max).

Quote:

#2 At what point is it advantageous to flip over the trailing arm mounts ??? (I have a one piece drive shaft, so I don't have a carrier bearing to flip)

Necessary or advantageous? My 68 was dropped enough that the rear axle tube was inside the c-notch @ ride height. I never experienced drivetrain vibration or had u-joint related failure.

Quote:

#3 What is the optimum angle for my shocks to run at (I am building new shock mounts)

I fabricated new upper shock mounts @ just duplicated what the factory engineered as far as shock angles. I figure it worked for this long, it must be real close to optimum.

Quote:

#4 Last but not least, if you were building a long panhard bar to run from the frame to the passenger side trailing arm would you use rubber bushing syle ends or heim joints ???

Option 'C' . . ...... Urethane. The benefit of heims w/o the noise.

03-09-2008, 11:16 AM	#1
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Few questions Ok, I have a few questions here #1 How much can I notch the frame & still be strong enough to haul something around 3-4 thousand pounds ??? (I plan to plate the top / sides & box the inside, & use a piece of 4" 1/4" wall pipe) I just need to know how deep I can make it & still be safe #2 At what point is it advantageous to flip over the trailing arm mounts ??? (I have a one piece drive shaft, so I don't have a carrier bearing to flip) #3 What is the optimum angle for my shocks to run at (I am building new shock mounts) #4 Last but not least, if you were building a long panhard bar to run from the frame to the passenger side trailing arm would you use rubber bushing syle ends or heim joints ??? Thanks, Matt P.S. I do not want a step notch, just something I can build that is hopefully deeper than a bolt in notch __________________ Just not low enough... ----------------------------- Sinister Killer Last edited by Spray-Bomb; 03-09-2008 at 11:17 AM.

03-10-2008, 05:38 AM	#2
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Re: Few questions ttt __________________ Just not low enough... ----------------------------- Sinister Killer



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