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Old 06-16-2009, 09:50 PM   #1
dan42
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SM465 with a stroker?

Does anyone have an SM465 hooked up to a motor that scoots pretty good, like a stroker? I'd really like to keep the SM465, but would like to put a potent crate motor (for me, that's around 340-350 hp) in the truck. Let me know what you guys have in front of your old 4-speeds.
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Old 06-16-2009, 10:39 PM   #2
66skylarkpost
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Re: SM465 with a stroker?

i got the original one in my '72 stepside behind a '73 buick 455 with a centerforce dual friction , i've given it it about all i can
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Old 06-16-2009, 10:45 PM   #3
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Re: SM465 with a stroker?

heres an older pic
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'70 k-10 longbox- mid 70's drivetrain 350/350 487x heads 10.1:1 flowmasters ,35's 3.73's auburn posi ,rear shackle flip. '72 short stepside U.S. forestry truck, '73 455 buick,400 turbo,dropped 2"-4 1/4" ,3.07 posi,:'89 silverado 1500 ,OK truck ,5.7 holley tbi ,trick 700r4 3.07 auburn posi ,and my '66 skylark ,'73 centurion and my '84 monte carlo imca stock car

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Old 06-16-2009, 10:40 PM   #4
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Re: SM465 with a stroker?

If you are asking if it will handle power- this truck is putting 760 HP thru one. Very common at this power level and they hold up pretty good.
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Old 06-18-2009, 02:05 PM   #5
chadio72
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Re: SM465 with a stroker?

Ive been running a 465 behind a 400hp 400 10 years, started popping out of 3rd gear recently, but the trans was worn and was in a 66 chevy running 75 k20 gear. as long as its not worn out, its fine
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Old 06-18-2009, 02:29 PM   #6
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Re: SM465 with a stroker?

Ok,guys what factory cars or truck did the sm465 come in,and do any of you have a pic of one?So I can keep an eye out for one.
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Old 06-18-2009, 02:35 PM   #7
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Re: SM465 with a stroker?

I have a pretty stout 454 with either an SM420 or 465 behind it and I hate it! I don't do much towing, and the gearing just FEELS wrong to me. I like off the line speed, but when I am in fourth before I hit 40 miles an hour, not my cup of tea. I have a TH400 ready to install this weekend. While I know the TH400 may not have the same strength (or it might), but I prefer the off line speed.

From a strength perspective, these manual transmissions are capable of handling a LOT of power.
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Old 06-18-2009, 03:40 PM   #8
dan42
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Re: SM465 with a stroker?

I'm thinking that the gearing is much like a three-speed in that you use a wide range of rpm's for each gear, from almost lugging the motor to almost over-revving it. I wonder if a 383 stroker would be an O.K. motor for that?
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