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04-09-2004, 12:48 PM | #1 |
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Join Date: Feb 2004
Location: Kelowna BC Canada
Posts: 481
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Help determine my tranny
i bought this tranny from my buddies uncle he said it was a TH400 but it doesnt measure right its an inch longer then a TH400 and stuff heres the numbers on the Vin Tag
B 73C 383 C 73-BC 149556 can someone help me find out wether it is a TH400 or TH375????? Thanx |
04-09-2004, 01:12 PM | #2 |
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Join Date: Oct 2002
Location: MT
Posts: 98
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TH400
This is from memory and therefore I maybe wrong but the rule of thumb I use is
6 bolts on the tailhousing = th400 4 bolts on the tailhousing = th350 top of bellhousing where it mounts to the block has a valley its a from an olds/buick/pontiac...... top of bellhousing is peaked its a chevy. hope this helps swdobbs..... |
04-09-2004, 02:36 PM | #3 |
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here.....check the pan shape.. it may be a th400 with a longer tailshaft tooo. not really sure. are pics a possibility???
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04-09-2004, 10:40 PM | #4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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TH350 has a kick down cable, TH400 does not.
There were more than one length on the trannys, so if your compairing it to just one measurement, then that won't rule out anything. |
04-09-2004, 11:10 PM | #5 |
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Location: Florida
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I dont normally do anything but read here but I thought I could help. I noticed that you ask about a 375 turbo, well that trans was a cadillac trans. Same style bellhousing with a 400 front housing,modulator on the side behind the bellhousing.this trans has a longer tail shaft than a normal 400 and the output shaft is not the same as a 400 it uses a 350 yoke because of its shaft size. I hope this will help you to identify your unit.
John |
04-09-2004, 11:33 PM | #6 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I didn't even catch that.
If it has the chevy bolt pattern, then it is not a caddy tranny, they used the BOP pattern. |
04-10-2004, 12:30 AM | #7 |
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Join Date: Mar 2003
Location: PA
Posts: 349
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Use the pan chart that Orange posted
If the numbers you posted are on a 400 they match up to a 1973 to 1974 BOP model that was use on all other than 455 V-8 Century & Reagal or Hi – Perf. The 375 was used on chevys also and will be marked on the bottom of the tail shaft THM-375
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04-10-2004, 09:25 AM | #8 |
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Location: Slippery Rock PA USA
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dad had a 375 t in his chevelle years ago..you think its a 350t until u pic it up seems as heavy as a 400t
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