Dropmember pinion angles? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

draggin86 · 03-06-2011, 07:43 PM

Hey guys i just got done installing my cab on my square body. I have a porterbuilt dropmember newest version. I am running a vortec 350/4L60E. Now when i set up the drive train in the truck i set the pinion angle at i believe 3 degrees now when i put the cab on it hit the tranny and keeping the cab up about 2" in the front lucky i dropped the tranny x member down so i had room for my exhaust. I was able to take out the spaced i had in and that left me with enough room to drop the cab on. Now i through the angle finder on the motor intake and it was showing about 8 degrees. Is this normal? what are you guys running for pinion angels?

Thanks,

Billy

Motor with spacers installed while making my Y pipe

SCOTI · 03-06-2011, 08:13 PM

I asked Nathan about this when trying to determine possible mods to my trans x-member on the chassis for my 64. He recommended 5° @ the trans. Once I started playing around w/that specific target, it was apparent drive-line angles would be needing a 2pc shaft set-up or a CV set-up. I would call him & run your specific combination of parts by him & see what he suggests.

For my set-up, I raised the trans so it's about 2.X° & left the pinion for the truck-arm rear 'as-is' (approx 2.2° down). This put my 1pc d.shaft @ about a .4° declining slope from the trans to the pinion @ ride height. This required floor mods but I think that's better vs. other options. It was definitely the cheaper choice.

draggin86 · 03-06-2011, 09:37 PM

Thanks SCOTI I talked to him a little before and he said there shouldnt be any mod need to the floor, but at this point its not looking good! I hope he will chime in and give some input!

PBFAB.COM · 03-06-2011, 11:24 PM

Quote:

Originally Posted by draggin86

Thanks SCOTI I talked to him a little before and he said there shouldnt be any mod need to the floor, but at this point its not looking good! I hope he will chime in and give some input!

Shoot me your number and I will call you tomorrow to explain a little more in depth and get you set up just right! We have plenty of aquares out there running around with no drive-line harmonic issues.... and NO cutting of the cab floor!

Nate

draggin86 · 03-07-2011, 12:03 AM

Thanks Nate! PM sent!

draggin86 · 03-09-2011, 12:46 AM

Thanks nate! great customer service as always!

PBFAB.COM · 03-09-2011, 01:53 AM

Quote:

Originally Posted by draggin86

Thanks nate! great customer service as always!

Anytime Billy! Glad you're feeling better!

03-06-2011, 07:43 PM	#1
draggin86 Registered User Join Date: Aug 2004 Location: Folsom, Ca Posts: 573	Dropmember pinion angles? Hey guys i just got done installing my cab on my square body. I have a porterbuilt dropmember newest version. I am running a vortec 350/4L60E. Now when i set up the drive train in the truck i set the pinion angle at i believe 3 degrees now when i put the cab on it hit the tranny and keeping the cab up about 2" in the front lucky i dropped the tranny x member down so i had room for my exhaust. I was able to take out the spaced i had in and that left me with enough room to drop the cab on. Now i through the angle finder on the motor intake and it was showing about 8 degrees. Is this normal? what are you guys running for pinion angels? Thanks, Billy Motor with spacers installed while making my Y pipe __________________ My build thread. Boy what did i get myself into! Last edited by draggin86; 03-06-2011 at 07:43 PM.

03-06-2011, 08:13 PM	#2
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,071	Re: Dropmember pinion angles? I asked Nathan about this when trying to determine possible mods to my trans x-member on the chassis for my 64. He recommended 5° @ the trans. Once I started playing around w/that specific target, it was apparent drive-line angles would be needing a 2pc shaft set-up or a CV set-up. I would call him & run your specific combination of parts by him & see what he suggests. For my set-up, I raised the trans so it's about 2.X° & left the pinion for the truck-arm rear 'as-is' (approx 2.2° down). This put my 1pc d.shaft @ about a .4° declining slope from the trans to the pinion @ ride height. This required floor mods but I think that's better vs. other options. It was definitely the cheaper choice. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 03-06-2011 at 08:15 PM.

03-06-2011, 09:37 PM	#3
draggin86 Registered User Join Date: Aug 2004 Location: Folsom, Ca Posts: 573	Re: Dropmember pinion angles? Thanks SCOTI I talked to him a little before and he said there shouldnt be any mod need to the floor, but at this point its not looking good! I hope he will chime in and give some input! __________________ My build thread. Boy what did i get myself into!

03-07-2011, 12:03 AM	#5
draggin86 Registered User Join Date: Aug 2004 Location: Folsom, Ca Posts: 573	Re: Dropmember pinion angles? Thanks Nate! PM sent! __________________ My build thread. Boy what did i get myself into!

03-09-2011, 12:46 AM	#6
draggin86 Registered User Join Date: Aug 2004 Location: Folsom, Ca Posts: 573	Re: Dropmember pinion angles? Thanks nate! great customer service as always! __________________ My build thread. Boy what did i get myself into!

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