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Canadian Poncho Homepage -> Canadian Poncho -> 1970 + Canadian Pontiac Power Train Forum -> Will my Transmission work?
Post Info TOPIC: Will my Transmission work?
mikewebb


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Will my Transmission work?
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Hello, I recently acquired a 1975 LeMans which had a 250 inline 6-single barrel in it. The motor died a few days ago and now I have to hunt for engines and want a small-block 350 in it to make things easy. I am wondering if I'll need a new transmission( mine's a 3spd auto) or can I bolt it up to a 350?....If I have to change the tranny too, I'm wondering if my driveshaft will be the right length. I've tryed to find this stuff online and I am coming up empty handed. So here I am asking you guys for some insight.

thnx, mike

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694279


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yes it will work

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4SPEED427


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Yes, it's fine. The best thing you could do to make that conversion to V8 easier is to find a complete Chevelle or Lemans with a 350. That way you would have all the parts necessary such as brackets, exhaust manifolds etc.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
mikewebb


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thnx guys for the quick response.

Would a 305 cid fit also? I am finding alot more of these motors online. Some with transmissions for cheap. Would the whole motor/tranny combo fit the driveshaft length?

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4SPEED427


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305 is identical externally to a 350. There is 3 choices of turbo 350 lengths though. Best to keep your trans.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
427carl


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Carl   can you still get him a Invader 350-290 long block for 1995.00?



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4SPEED427


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Close to it I think but then he needs all the mounts, brackets etc.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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mikewebb


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Got another question. Would an exhaust system from a 1979 Firebird, hook up to the 350 im planning to put in?. Or are they completely different under there?

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4SPEED427


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No, you will need an exhaust system from an A body with a Chevy (Canadian Pontiac!) engine. That would limit you to Lemans with the Chev 350 or else a Chevelle I guess.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
73SC


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I must have been asleep on this thread, just found it now.  Excellent responses Carl ! smile

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Ray White, Toronto ON

Formerly - The one and only 1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 
4SPEED427


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I have to admit, I was surprised someone as faithful as you had not replied Ray!

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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