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Discussion Starter #1
Performance wise, what are the advantages of a C6 over a C4.
What are they best suited to . IE engine size and mods .
Is a C6 better than a C 4 or does it depend on the application ?

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Depends on the application. The C6 is a stronger tranny, thus the reason all the trucks get them. That strength comes with a severe penalty, though ... weight, lots of weight. The C4 will perform better, but the a stock C6 will withstand more abuse and HP than a stock C4.


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You'll always get what you've always got

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Discussion Starter #3
So a C6 is only for big horse power stuff. It would be overkill on a standard car
C4 is fine for regular use ?

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I would recommend the C4 ... easy to work on, plenty of aftermarket parts, plenty of performance for most applications.

If you always do what you've always done,
You'll always get what you've always got

http://www.classic-mustang.net/johnpro
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With a 289/302 and 351W, a C4 is fine in most applications...theoretically that should extend to the 335 series engines but so few people build mild ones that I always recommend a C6 or Powerglide with those....Obviously, FE and 385 series engines should use a C6 because they make such a large amount of torqe at low rpms...

Granted, this is general advice....

The most HP I've run through a C4 in a racing application is around 450 flexplate HP.....I know of others who have run more but have no practical experience...
Remember, this is with 8" converters and drag slicks in a pure racing environment...

My trans is a blueprinted stocker with updated friction materials; no aftermarket parts whatsoever, other than a shift kit. The converter has been everything from a 4500rpm stall 8" to the current 2800rpm stall 10" street converter...

Hey, have fun! *G*

Pat
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I would agree with all, Johnpro specially. C4 lighter, easiest to work, parts, numerous applications. IMHO, quicker on short distance because of weight.

69 Coupe 302, 4 speed, primer red (for that "saving my $ for a real paint job !" look)
66 Coupe, Sauterne Gold , 200 (aka goose sh** green) rust bucket
 
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