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curious on how much hp and torque the dana 60 style posi can handle?before a spool is needed?thanks

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It really depends on the size of the axles and traction The 30 spline and smaller axles will break before the posi unit will I raced my 1970 Hemi Cuda stick shift car(35 spline axles and stock clutch style Dana posi ) in NHRA stock a lot for 2 1/2 yrs with no problems BTW, those cars are really nose heavy stock so the traction is not the best with a clucth and nine inch tires

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curious on how much hp and torque the dana 60 style posi can handle?before a spool is needed?thanks

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curious on how much hp and torque the dana 60 style posi can handle?before a spool is needed?thanks

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We've been mid 9's @ 3850lbs. Guessing 850 ish Hp and maybe a little over 700ft/lb Ours was a bolt together powerloc. After the Crown wheel and pinion recently let go, (12 year old 4:10 street gears), we've recently swapped over to a detroit locker and pro gears for the new motor (Dyno'd @ 1048hp and 950ft/lb) I don't really want to use a spool if I can help it. The powerloc was rebuilt and now resides in a buddies '62 pro street Impala running low 10's

EDIT: BTW car has 35 spline axles, 10.5 tyre and is footbraked.

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What Cab said. It's about the axles at your stage. Since you stated the sure grip bolts together that's a power loc -- the stronger of the two

I don't know what Chevy used for d60's - dodge used 30 spline axles and ford used 16 spline and then later 30 spline
The side gears can be changed so if you want to step up to 35 the gears aren't terribly expensive
My truck 60 had a 30 spline trac loc and I would estimate that 450 hp would be max on that unit. ( depending on weight and traction)
I've since sold the traclock and bought a power lock from a older ford - swapped the side gears to 30 spline and plan to use my 8 3/4 axles. My car will eventually be in the 500-600 hp range and I feel safe at that level in my 3500 lb b body. I am sure that with 35 spline aftermarket axles you can raise that measurably but I'm not experienced at that level

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What Cab said. It's about the axles at your stage. Since you stated the sure grip bolts together that's a power loc -- the stronger of the two

I don't know what Chevy used for d60's - dodge used 30 spline axles and ford used 16 spline and then later 30 spline
The side gears can be changed so if you want to step up to 35 the gears aren't terribly expensive
My truck 60 had a 30 spline trac loc and I would estimate that 450 hp would be max on that unit. ( depending on weight and traction)
I've since sold the traclock and bought a power lock from a older ford - swapped the side gears to 30 spline and plan to use my 8 3/4 axles. My car will eventually be in the 500-600 hp range and I feel safe at that level in my 3500 lb b body. I am sure that with 35 spline aftermarket axles you can raise that measurably but I'm not experienced at that level

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When you say you can change the side gears to accept a 35 spline axle, would it be the same diameter 35 spline axle that might go into a spool? If I remember right a 35 spline axle, at least for an 8 3/4, meant for a spool is considerably thicker.

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