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Old 11-02-2010, 05:52 PM   #1
hcaz095
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Question 1972 highlander c10.... which auto trans is it?

So, I have a 1972 chevy c10 highlander with a 350v8 and the SPID only lists 'turbo hydramatic" for the trans... it is a th350 or th400?

The truck was optioned quite nicely with ps, pb, AC, and orig california emissions airpump. Any help would be appreciated.

~Zach
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Old 11-02-2010, 05:52 PM   #2
hcaz095
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Re: 1972 highlander c10.... which auto trans is it?

I guess I should also mention it has the 3.08 rearend with a limited slip. How much torque will those long gears hold up to?
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Old 11-02-2010, 06:27 PM   #3
raycow
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Re: 1972 highlander c10.... which auto trans is it?

With a 350 engine you most likely have a TH350 transmission. To find out for sure, crawl under and note the shape of the pan. A TH350 pan is rectangular with one corner cut off diagonally. A TH400 pan is shaped somewhat like the state of Illinois.

Ray
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Old 11-02-2010, 07:08 PM   #4
70cst
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Re: 1972 highlander c10.... which auto trans is it?

I am guessing with the 350 V8 you have the 350 tranny. All BB trucks had the 400 tranny.
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Old 11-02-2010, 07:17 PM   #5
stich626
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Re: 1972 highlander c10.... which auto trans is it?

modulator valve pointing to the back th350
to the side th400
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Old 11-02-2010, 07:48 PM   #6
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Re: 1972 highlander c10.... which auto trans is it?

Tell you what...If you're concerned about the 3.08 holding up, just send it my way, and I'll trade you for my open-rear 3.73...
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