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Old 06-07-2015, 10:22 PM   #1
72MARIO
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Re: Bagged 1968 Suburban

I havent got the rear a.c. installed yet. Got the gear vendors working $400 control box didn't fix the problem. Turned out to be two of there crimps on the floor switch harness did not get crimped properly. I am still pretty annoyed with that problem They shipped the parts out thru ups not postal as i directed them . That costed me nearly $ 65 in brokerage fees that would have not been charged thru postal.


Just figured out tonight the drive shaft i had made has been bent from day 1 and has been the source of my vibiration. Hopefully that can be fixed tomorrow

I also change the rear gears to a 3:42 with motive gears and a Eaton posi. With the 26.5 tire the 3:42 will act just like the 3:73 and 33 in my work truck. Hopefully it still pulls the trailer nice. Really didn't notice a huge difference around town . Looking forward to 75mph on the highway !
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
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Old 08-07-2015, 10:51 AM   #2
7dee2
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Re: Bagged 1968 Suburban

Quote:
Originally Posted by 72MARIO View Post
I havent got the rear a.c. installed yet. Got the gear vendors working $400 control box didn't fix the problem. Turned out to be two of there crimps on the floor switch harness did not get crimped properly. I am still pretty annoyed with that problem They shipped the parts out thru ups not postal as i directed them . That costed me nearly $ 65 in brokerage fees that would have not been charged thru postal.


Just figured out tonight the drive shaft i had made has been bent from day 1 and has been the source of my vibiration. Hopefully that can be fixed tomorrow

I also change the rear gears to a 3:42 with motive gears and a Eaton posi. With the 26.5 tire the 3:42 will act just like the 3:73 and 33 in my work truck. Hopefully it still pulls the trailer nice. Really didn't notice a huge difference around town . Looking forward to 75mph on the highway !
First off really nice Burb! How do like the GVOD setup pulling your trailer, does the 327 have enough grunt with the new gears? I drove a new 2015 F250 (6.2 gas, 6-spd auto) with a car trailer behind it that was geared/tired like you describe (3.73/33 tire) and it was great in the city and on the freeway (13/14 mpg @ +75mph). After some research though I found the Ford had a really low first gear 3.97 vs the T400's 2.48 first gear. That and giving up 50+ cubes 379 vs 327 what do you think is it hard to get it all rolling? I've been mulling over these same drivetrain upgrades myself.
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Old 02-11-2016, 11:50 PM   #3
72MARIO
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Re: Bagged 1968 Suburban

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Originally Posted by 7dee2 View Post
First off really nice Burb! How do like the GVOD setup pulling your trailer, does the 327 have enough grunt with the new gears? I drove a new 2015 F250 (6.2 gas, 6-spd auto) with a car trailer behind it that was geared/tired like you describe (3.73/33 tire) and it was great in the city and on the freeway (13/14 mpg @ +75mph). After some research though I found the Ford had a really low first gear 3.97 vs the T400's 2.48 first gear. That and giving up 50+ cubes 379 vs 327 what do you think is it hard to get it all rolling? I've been mulling over these same drivetrain upgrades myself.

Well I guess to answer your question the 327 left something to be desired as far as tq and power it did ok once it got rolling and got 10mpg towing the airstream

Changing from 3:73 to 3:42 didnt help with towing but if you take into account my rear tire size of 27" that makes the 3:42 comparable to a 2000+ truck with 4:10s

The big hills even splitting the gears with the gv I would loose about 10 mph on a hill. It was work dropping and splitting gears so the LQ4 should help alot
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
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