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09-29-2009, 06:22 PM
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#1 |
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Registered User
 
Join Date: Dec 2006
Location: CA
Posts: 331
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Will a big block/ Turbo 400 fit in a small hump cab?
I'm about to attempt to install a 1972 402 with the turbo 400 tranny from an original BB truck into a 71 shortbed that originally had a small block and a turbo 350.
So my question is since the big block truck had a high hump cover, if I use the 402 two piece motor mounts and all the brackets and such from the big block truck, will I have clearance or transmission shift linkage issues against the low hump in the recipient truck? Looks like there's going to be enough room, but I thought I should ask, as I'm sure I'm not the first to try this... thanks in advance! 
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09-29-2009, 06:44 PM
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#2 |
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Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Will a big block/ Turbo 400 fit in a small hump cab?
I have a TH400 in my SWB low-hump cab. High Humps are used by 4WD trucks. As for the BB engine, the hump doesn't have anything to do with the engine. There are those who have mentioned where the motor mounts are situated, as in forward or aft. I have no experience with that, but I can see if the engine isn't placed correctly, that where the transmission ends up will be critical.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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09-29-2009, 07:25 PM
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#3 |
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Active Member
Join Date: Oct 2006
Location: Ohio
Posts: 1,643
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Re: Will a big block/ Turbo 400 fit in a small hump cab?
Yes it will fit a BB/T400 combo
__________________
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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09-29-2009, 07:32 PM
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#4 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Will a big block/ Turbo 400 fit in a small hump cab?
trucks with a high hump from the factory...
big block/auto any 4 speed any 4X4 All others had low hump. With good cab mounts, the small hump will work with the bbc/auto, but it'll be closer than what the guys at GM wanted. |
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09-29-2009, 10:00 PM
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#5 |
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Registered User
Join Date: Dec 2006
Location: CA
Posts: 331
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Re: Will a big block/ Turbo 400 fit in a small hump cab?
Thanks for the answers! I'll take good notes and will use the exact same holes for the engine towers and brackets. I'll post pics soon as I get the engine in.
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