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8-3/4 741 case

440amf

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May 13, 2011
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Location
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The good news is that my 1966 Coronet 500, originally a Poly 318/727, has an 8-3/4 SG rear end with, I think, 3.55's (using the count drive shaft revolutions to one turn of the wheel method).

The "bad" news, is that it's a 741 center section. I'm putting in a 440/833 combination. The 440 will have approximately the same power as an original 440 Magnum engine. I doubt I'll ever put it on a drag strip or do any major smoke shows with it, but I will bang it through the gears on occasion (I'm old, but not dead).

I'd like some opinions on the adequacy of the 741 center section for my anticipated type of usage and I also would like to know if the SG unit from the 741 can be used in a 742 or 489 center section and/or if there is any way to beef up the 741. Thanks for any replies.

Scott
 
My 65 Satellite 383hp 4-spd came with a 741 sure grip. Yes the sure grip can be swapped into a 489 or 742 case but the 741 should be fine for your car.
 
IIRC, the SG can swap but the ring and pinion can not.

IMO, unless you have 600+HP and slicks, a 741 is fine.
 
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