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06-10-2011, 05:07 PM
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#1 |
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Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,396
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turbo 400 tranny question
I have a guy looking a turbo 400 I have out of a BB truck and he wants to put it behind a 327. He wants to make sure it will mount up OK. Any help is appreciated. Thanks Randy
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67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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06-10-2011, 05:27 PM
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#2 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,535
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Re: turbo 400 tranny question
i took the chevy small block out of my 74 and swapped it with a 454. I made a few mods to other stuff but the engine and motor(s) all mated up nicely. truck had a th400 transmission and everything worked out fine for me.
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06-10-2011, 05:41 PM
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#3 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: turbo 400 tranny question
I think the only "possible" issue could be that some flexplates have a dual bolt pattern for the converter and some don't. Seems like you can run into a problem there but I'm not an auto tranny expert. In other words the converter might not fit the bolt holes in the exsisting flexplate. Just remember seeing different things like that when I was researching my stall speed and applications.
Last edited by prostreetC-10; 06-10-2011 at 05:42 PM. |
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06-10-2011, 08:01 PM
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#4 |
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Roadtrip!
 
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,764
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Re: turbo 400 tranny question
I think you can bolt it in and go.
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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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06-10-2011, 08:20 PM
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#5 | |
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Registered User
Join Date: Jan 2008
Location: Post Falls, Idaho
Posts: 606
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Re: turbo 400 tranny question
Quote:
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06-10-2011, 08:37 PM
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#6 |
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Registered User
Join Date: Oct 2010
Location: Buckeye Arizona
Posts: 470
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Re: turbo 400 tranny question
You're perfectly fine, almost all Turbo 400's are the same except for other GM ones, like Pontiac, etc.
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06-10-2011, 09:39 PM
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#7 |
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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: turbo 400 tranny question
chevy has one bolt pattern, buick, olds, pontiac, and caddy all have another bolt pattern.
On the chevys, small block, big block, inline 6 (230/250/292 family) and the 2.5 4 cylinder... they all have the same bellhousing. |
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06-10-2011, 10:43 PM
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#8 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: turbo 400 tranny question
Well I did look it up and there is in fact 2 different bolt patterns for the converters. Is this not an issue with OE? I'm not talking bellhousing.
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06-11-2011, 12:16 AM
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#9 |
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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: turbo 400 tranny question
i would suspect that since the TH350 didn't come out till 69, and I think the last year for the 327 was 68 (i know that to be true in trucks) then most, if not all 327 flex plates would be drilled for the larger TH400 pattern.
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06-11-2011, 01:24 AM
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#10 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: turbo 400 tranny question
hmmm....good deduction right there!
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06-11-2011, 08:48 AM
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#11 |
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Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,396
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Re: turbo 400 tranny question
Thanks for the info guys!!!!!!! I appreciate it, Randy
__________________
67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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06-11-2011, 01:13 PM
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#12 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,947
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Re: turbo 400 tranny question
It does take more poop to turn a TH400... it's why it was behind the big blocks from the factory. So it could handle the torque. I think it takes somewhere around 40 or 50 more hp to spin a TH400 than a TH350.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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06-11-2011, 05:03 PM
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#13 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: turbo 400 tranny question
Interesting.....I have never heard that!
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06-11-2011, 05:12 PM
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#14 | ||
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: turbo 400 tranny question
Quote:
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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