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02-28-2011, 09:39 PM | #40 |
Turbo Guy
Join Date: Jan 2005
Location: Calgary Alberta
Posts: 353
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Re: Something I've been working on...
Havent updated this build thread in a while so I guess it's due.
I built the 4l80e and the 9 inch but it was only so so. The auto trans was ok but I didn't have near enough stall in the converter so it felt alot slower. If I did it over again I would order at least 3200 stall. The lockup on the trans makes cruising a breeze. It was fast when it went into boost but didn't feel racy like the 4 speed. That 4l80e is tough though, it would shift so hard on the 1-2 that I had to lift about half the time to make it stop spinning. The 9 inch was another story. I was told running an offset pinion would be fine but for me it wasn't. I couldn't get the driveline vibration out of it. I was so frustrated with it I barely put any miles on the truck all summer. This was what made me go back to what works with a stronger do-over. I am currently finishing up the 4 speed install, the new and improved 12 bolt is in so it should be all good. I was lucky to find this nodular iron cased t-10 locally, it has the high nickel gearset too. I don't want to break another trans, and I don't have the money to go to a tko!
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1972 Gmc Custom swb intercooled twin turbo 327 10.5-1 and 12 lbs of boost, Nodular iron case super t-10 4 speed with a blowproof bellhousing, 12 bolt eaton posi soon to have moser axles. 1998 Honda CR250 fully ported, case matched, milled head, vortexed carb and revalved suspension but don't forget the woody woodpecker decal kit! Things I've broken so far: 12 bolt diff saginaw 4 spd many, many pieces Aluminum case Super t-10 4 spd |
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