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#1 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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I have seen a lot of talk about "high humps" and I know few guys sell them over in the parts area. I am new to these trucks so I need to know, is necessary to have a high hump if I am putting a big block and T400 in my truck?
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#2 |
Account Suspended
![]() Join Date: Dec 2010
Location: Falcon Colorado
Posts: 1,029
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Re: Cab mods requires to use a BBC/TH400
1 have a 67 chevy pickup with a 454 and th400 and did not need to put a high hump in mine to fit the motor and trans in it
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#3 |
Always on the hunt...
![]() Join Date: Sep 2006
Location: Portland, OR.
Posts: 5,602
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Re: Cab mods requires to use a BBC/TH400
Depends on the BBC/TH400 install position in the frame and also the condition of the cab mounts, GM used the bolt in tall tunnel cover on these applications for a reason. Mel
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#4 |
18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: Cab mods requires to use a BBC/TH400
My truck originaly came with a th400 and a small block 350. I put the 454 in with the big block towers and it fit fine
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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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#5 |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,477
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Re: Cab mods requires to use a BBC/TH400
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I've got a 454/TH400 in the White '67 with a low hump. No problem... LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#6 |
Registered User
![]() Join Date: Sep 2010
Location: Formerly MD and San Diego, now loving life in Arizona
Posts: 1,636
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Re: Cab mods requires to use a BBC/TH400
Can anyone submit a couple of pictures showing the side profile of the high and low humps? (maybe installed in trucks) I have wondered the same thing would like to see the difference.
I have one truck (GMC) that has a 350 SBC/TH400 and another that has a 396BBC/TH400. Both transmission humps appear to be the same in these two trucks. If I have tall humps and a short will work, I will probably change. If I have two shorts, then I am good to go! Thank you! Al '69 GMC 2500 Custom Camper '69 Chevy C10 396 |
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#7 |
Account Suspended
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Location: Falcon Colorado
Posts: 1,029
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Re: Cab mods requires to use a BBC/TH400
high humps are bolted in and low humps are parts of the floor and not removable unless you cut it out
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#8 |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,477
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Re: Cab mods requires to use a BBC/TH400
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Lots of pics of high humps in parts for sale forum. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#9 |
motor exploder
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
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Re: Cab mods requires to use a BBC/TH400
My '69 was originally a 307/Powerglide truck - low hump. My grandfather (was his truck originally) put in a 454/TH400 with '72 motor mounts and it fit under the low hump no problem.
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#10 |
A day late and $1 short...
Join Date: Dec 2008
Location: Northwest FL
Posts: 3,870
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Re: Cab mods requires to use a BBC/TH400
Sounds like it is no problem to use a BBC/TH400 with the low hump, but the access provided by the removable high hump is nice to have. I am going to give it a go with the stock floor.
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