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Old 08-01-2011, 04:07 PM   #1
mjo8585
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400+ hp with a saginaw 4 spd ?'sss

Hey I'm new to the site and I just found a really nice saginaw for $350. I'm in process of a frame up on a '68 C-10 and want to get rid of my old 307 with 3 spd manual. I plan on putting in a 383 stoker with about 400 hp. Is this tranny going to hold up to this kind of horsepower? Im not gonna race it or anything, just a toy I drive on wknds. It's not going to be a show truck, its my first rebuild. Any help on what trans all you guys use would be great!!
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Old 08-01-2011, 06:04 PM   #2
chevytruckluver
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Re: 400+ hp with a saginaw 4 spd ?'sss

I have run Saginaws years ago and never had any trouble with the gear box. I had a very strong small block that ran mid 11's in the quarter mile, of corse that was in a camaro. Saginaw would not be my first choice but I dont think it will be your weakest link
good luck
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Old 08-02-2011, 12:48 AM   #3
prostreetC-10
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Re: 400+ hp with a saginaw 4 spd ?'sss

Problem is partly the power AND the weight of the truck. The drivetrain always lets go at the weakest part. I wouldn't in these trucks.
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Old 08-02-2011, 12:54 AM   #4
ed2552
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Re: 400+ hp with a saginaw 4 spd ?'sss

Welcome from another MN member!

Honestly, with that kind of power I'd be looking at something like at least an NV4500 or something stronger than a Saginaw. That's just me.
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Old 08-02-2011, 12:59 AM   #5
fastwillie 696969
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Re: 400+ hp with a saginaw 4 spd ?'sss

you eat that trans up with the clutch and pressure plate .i had a m21 blow up then i had it rebuilt for 500 hp rate it cost me 2200 bucks ,look for t5 trans
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Old 08-02-2011, 01:02 AM   #6
Dieselwrencher
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Re: 400+ hp with a saginaw 4 spd ?'sss

I'd try to find a NV4500 and be done with it personally. Heck a NV3500 may get the job done too.
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