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04-24-2007, 07:46 PM
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#1 |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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BB+T400+Small Trans hump=probs???
I've been told it will work but will be very close. Anyone had probs. Will 700
tranny fit better?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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04-24-2007, 08:47 PM
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#2 |
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Active Member
Join Date: Oct 2006
Location: Ohio
Posts: 1,643
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Re: BB+T400+Small Trans hump=probs???
I am running a BB/T350 which bolts up the to same location at the back of the block and I have all kinds of room.
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1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles  18.5" x 31" Hoosier Pro Street Radials  ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree 
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04-24-2007, 08:49 PM
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#3 | |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: BB+T400+Small Trans hump=probs???
Quote:
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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04-24-2007, 08:48 PM
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#4 |
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Registered User
Join Date: Feb 2007
Location: Westfield, Tioga County) Pennsylvania
Posts: 113
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Re: BB+T400+Small Trans hump=probs???
I am have been using a BB with a TH400 in my 68 panel with a small hump without any issues.
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Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab |
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04-24-2007, 09:01 PM
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#5 | |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: BB+T400+Small Trans hump=probs???
Quote:
It gets 100f+ in summer?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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04-24-2007, 09:09 PM
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#6 |
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Senior Member
 
Join Date: Jan 2000
Location: LHC, AZ
Posts: 385
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Re: BB+T400+Small Trans hump=probs???
396 & t-400 in 2wd Blazer low hump. No problems
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70 Jimmy 4x4 71 GMC 2500 Too bad stupidity isn't painful |
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04-24-2007, 09:13 PM
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#7 |
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Registered User
Join Date: Feb 2007
Location: Westfield, Tioga County) Pennsylvania
Posts: 113
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Re: BB+T400+Small Trans hump=probs???
Seems to be plenty of room around the tranny. Custom bent pipes so, no issue with any clearance problems. i have the floor insulated under the floor mat. No heat shields used.
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Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab |
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04-24-2007, 10:46 PM
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#8 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: BB+T400+Small Trans hump=probs???
the question is... are any of you running the correct spacer under the tranny mount?
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04-24-2007, 11:05 PM
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#9 |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: BB+T400+Small Trans hump=probs???
Is that just simply a bb spacer you can buy to replace sb?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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04-24-2007, 11:13 PM
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#10 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: BB+T400+Small Trans hump=probs???
On my 70, I ran 454, turbo 400, low hump cab and the proper spacer under the trans. It rubbed the cab until I replaced the 35 year old original cab mounts with new ones. Then it cleared fine.
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I'm on the Instagram- @Gearhead_Kevin |
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04-24-2007, 11:16 PM
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#11 | |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: BB+T400+Small Trans hump=probs???
Quote:
sb?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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04-25-2007, 12:05 AM
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#12 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: BB+T400+Small Trans hump=probs???
there is supposed to be a spacer under the tranny mount on a big block... there isnothing there but a mount on a small block tranny.
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04-25-2007, 10:29 PM
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#13 |
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Registered User
Join Date: Feb 2007
Location: Westfield, Tioga County) Pennsylvania
Posts: 113
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Re: BB+T400+Small Trans hump=probs???
I believe my transmission mount is original although I am running a BB. It measures 1 3/4" with a 3/8" thick spacer. Original eng was 327. Only change I made was motor mounts & towers.
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Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab |
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04-25-2007, 11:47 PM
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#14 |
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Roadtrip!
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,815
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Re: BB+T400+Small Trans hump=probs???
It may also make a difference on which mounts you are using for the big block. (if you are on the back set of holes where a 6 cyl would be) The factory 2 wd, v-8 trucks engine sat more forward. I am sure someone will clarify what i mean.
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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04-26-2007, 12:40 AM
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#15 | |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: BB+T400+Small Trans hump=probs???
Quote:
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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04-26-2007, 01:41 AM
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#16 |
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Account Suspended
Join Date: Aug 2006
Location: vacaville ca, because it as far from indy as i can be
Posts: 775
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Re: BB+T400+Small Trans hump=probs???
the spacer is just a 1/2" thick steel flat bar.
i do not use the spacer, my motor and tranny are pushed back 1" than normal, i hav ehte 73+ motor mounts, bbc th400, i clear with no issues, id does get a little warm but i also have no floor covering at all. |
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04-26-2007, 12:33 AM
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#17 |
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i love summertime
Join Date: Jul 2002
Location: Kelowna BC
Posts: 4,302
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Re: BB+T400+Small Trans hump=probs???
im running a 327/th400 with a low hump, there is room but with a lokar floor shifter its really close....if i knew i probably wouldve swapped it for a high hump but its too late now cause i dont want to get another molded carpet setup
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1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724 |
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04-26-2007, 07:06 AM
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#18 |
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Senior Member
Join Date: Dec 2002
Location: Portland, Oregon
Posts: 901
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Re: BB+T400+Small Trans hump=probs???
402 BB w/T400 ...... low hump and no problem
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'71 GMC;fleetside;PB/PS/AC/CC/402 Eng./Custom Paint/110,000act miles/3 fuel tanks(52gal). |
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04-27-2007, 12:48 PM
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#19 |
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Registered User
Join Date: Feb 2007
Location: Westfield, Tioga County) Pennsylvania
Posts: 113
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Re: BB+T400+Small Trans hump=probs???
kelsfine69 - here are pic of tranny mount with 3/8" spacer and without the spacer. Both are on T400 from trucks with low hump...
[attach]
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Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab |
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