C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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69 350 or 300hp

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Old Dec 21, 2006 | 09:55 AM
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Default 69 350 or 300hp

I have a 69 with THM 400. It is my understanding that the 350ci / 300hp was the only engine with this trans.

That the 350ci / 350 hp (L46) was only mated with a 4 speed. Are my assumptions correct?

Any other thing to look at in the car that would help me in this determination?
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Old Dec 21, 2006 | 10:08 AM
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You are correct. Also, the 350 hp. engine has a 6,000 rpm redline on the tachometer. Of course, the carb., distributor etc. part numbers and the harmonic balancer size were different... not to mention the internal differences.
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Old Dec 21, 2006 | 10:41 AM
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The BB also used this trans in 69. If it is and always has been a SB then yes the 400 was the trans.
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Old Dec 21, 2006 | 05:42 PM
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The 350/350HP was the only engine that did not offer a turbo 400 trans. Have you checked the engine code on the stamp pad?

HZ code is 300HP Auto, any other engine code for a small block would be manual trans.
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