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12-05-2013, 10:12 PM
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#1 |
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Registered User
Join Date: Oct 2013
Location: san jose california
Posts: 87
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Shift improve kit
I installed a new rear main seal, new oil pan gasket, new bm holeshot 1900 to 2100 converter and tomorrow im servicing the tranny with a filter kit. I know that if i want to install a shift improve kit that it would be the best time cause the tranny is out. Any suggestions on a good shift improve kit? This will be the first time im going to open a tranny but im pretty mechanically inclined. Do kits come with step by step directions and specs? And can it be done in one day? I wont be racing it but i want to know i have the power and get up there. Its a 350 4 bolt main small block with a turbo 350 tranny. Thanks for any help and advice.
1969 chevy C10 longbed |
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12-05-2013, 10:33 PM
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#2 |
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Registered User
 
Join Date: Jul 2013
Location: Forestburg, Texas
Posts: 659
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Re: Shift improve kit
B&M makes the best kits IMHO for the TH350/400. It is easy to do and does come with simple instructions and the needed drill bits to open a few holes in the spacer plate. Truthfully most shift kits for TH350/400 are just a few springs and drill bits. Nothing major unlike 4L60E's those are much more involved, but still easy.
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Mark Jesus is the Way! 2003 2500HD CCLB Duramax/Ali (Clifford) 2014 2SS/RS black on black Camaro (Betty) 2006 Pontiac SOLSTICE silver/black (Lula-Bell) 1970 C/10 Short Wide (Peggy) 1964 C/10 Short Step (Hambone) RIP Jimmy Hamilton Thank you for the trucks |
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12-05-2013, 10:36 PM
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#3 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Shift improve kit
I'm a Transgo guy. I put one in every transmission I mess with.
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I'm on the Instagram- @Gearhead_Kevin |
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12-06-2013, 10:20 AM
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#4 |
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Senior Member
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: Shift improve kit
are you doing this on a workbench, or installed in the truck? i would be carefull if you are under the truck installing , make sure you dont drop anything or (Springs,Balls ect ect)
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Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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12-06-2013, 10:37 AM
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#5 |
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Registered User
Join Date: Dec 2012
Location: Manitoba
Posts: 644
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Re: Shift improve kit
X2 on the transgo reprogram kit. I also run type F in my th400. Lots of guys have done this. Like a mild shift kit by simply changing oil types. I likely opened a can of worms on this one. Lol. Interested to hear what others have to say.
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12-06-2013, 10:52 AM
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#6 | |
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One of the First
Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,054
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Re: Shift improve kit
Quote:
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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12-06-2013, 11:02 AM
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#7 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Shift improve kit
My favorite for the TH350 is the Superior HP
However, to get the best results, the middle seal in the direct clutch drum must be removed 
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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