700r4 and a bigger gas tank - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigBlueBomber · 11-30-2008, 02:47 PM

Ok so i have been driving my burb alot more since gas went down. my tank seems pretty small for the size of the truck. I was wondering what size gas tank will fit and give more gas. The other thing I want to do is put a 700r4 in my rig. It is a 4x4 and what year tranny is best. I want to keep my NP 205 t-case. I was told that their is a certian years of 700's that are best and have the right parts. Thanks

cparman · 11-30-2008, 09:00 PM

What you want is the latest model 700 that will fit to your Tcase. I would think you should be able to find one from a late 80's early 90's. Not sure but believe that there were updates to the pump. I put a 88 firebird 700 behind a zz502 = 500 hp big block in my Chevelle, and it stayed together with my right foot

BigBlueBomber · 11-30-2008, 09:20 PM

I was told that there is a certain tranny to get so that my T-case adapter will bolt to. It doesn't seem right though. Shouldn't all 700's have the same output shaft size/spline and bolt pattern for the tailshaft housing. My adapter bolts where the tailshaft housing goes.

DINS 1 · 11-30-2008, 09:30 PM

go to advanceadapters.com they have all kinds of info on transmission and tranfercase swaps.

justcuz · 12-01-2008, 02:28 PM

You can do a search on Pirate 4x4 for NP 205 and Grumpy has a whole thread on the adapters and coupler lengths. You should find what you need there. They are not big fans of 700R4's so keep that in mind. It is a hardcore 4x4 website and they don't worry too much about overdrives on hardcore trail rigs.

11-30-2008, 02:47 PM	#1
BigBlueBomber Registered User Join Date: Nov 2008 Location: Berthoud, Colorado Posts: 9	700r4 and a bigger gas tank Ok so i have been driving my burb alot more since gas went down. my tank seems pretty small for the size of the truck. I was wondering what size gas tank will fit and give more gas. The other thing I want to do is put a 700r4 in my rig. It is a 4x4 and what year tranny is best. I want to keep my NP 205 t-case. I was told that their is a certian years of 700's that are best and have the right parts. Thanks

11-30-2008, 09:00 PM	#2
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: 700r4 and a bigger gas tank What you want is the latest model 700 that will fit to your Tcase. I would think you should be able to find one from a late 80's early 90's. Not sure but believe that there were updates to the pump. I put a 88 firebird 700 behind a zz502 = 500 hp big block in my Chevelle, and it stayed together with my right foot

11-30-2008, 09:20 PM	#3
BigBlueBomber Registered User Join Date: Nov 2008 Location: Berthoud, Colorado Posts: 9	Re: 700r4 and a bigger gas tank I was told that there is a certain tranny to get so that my T-case adapter will bolt to. It doesn't seem right though. Shouldn't all 700's have the same output shaft size/spline and bolt pattern for the tailshaft housing. My adapter bolts where the tailshaft housing goes.

11-30-2008, 09:30 PM	#4
DINS 1 Registered User Join Date: Apr 2000 Location: Webster City, Iowa USA Posts: 572	Re: 700r4 and a bigger gas tank go to advanceadapters.com they have all kinds of info on transmission and tranfercase swaps. __________________ Wade "DURAMAX BURB" Burb on 2004 chevy 2500HD 4x4 Duramax chassis Long term project 2004 2500HD 4x4 crew cab GMC Duramax 4" lift 35's 79 RS Camaro Last edited by DINS 1; 11-30-2008 at 10:16 PM.

12-01-2008, 02:28 PM	#5
justcuz Registered User Join Date: May 2008 Location: Alta Loma, Ca. Posts: 930	Re: 700r4 and a bigger gas tank You can do a search on Pirate 4x4 for NP 205 and Grumpy has a whole thread on the adapters and coupler lengths. You should find what you need there. They are not big fans of 700R4's so keep that in mind. It is a hardcore 4x4 website and they don't worry too much about overdrives on hardcore trail rigs.



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