ok I have a 69 malibu not a ss or nothing orignally came with a I6 4speed 10 bolt then got upgraded to a 454 auto 12 bolt and when I got it the 10 bolt was back in the car. My question is if I rebuild this 10 bolt will it handle 5-600 hp from my 496 or do I need to go to at lease a 12 bolt any option would be great.

With no traction , it will probably live. With anything sticky it will break. I would look for a 12 bolt or anything else aftermarket from Moser etc.

Dave

Which 10 bolt?
8.2 10 bolt isn't very strong ,8.5's close to the 12 bolt strength.
Might last a while as long as you don't get too much traction - ie:slicks ,etc.

its a 8.2 I have a 12 bolt if I want it but wasn't sure if it was needed I am trying to save money as much as possible so if the 8.2 is no good I might go after the 12 onless there another option.

I'd not put any $$$ into an 8.2.

thats what i figured I just get the 12 bolt i was going to get any ways rebuild it and drop it in.

Yes, you will need the 12 bolt.

i run a 10 bolt with eaton posi,4.11 richmond gears, yukon 28 spline axles, T/A girdle with 10 inche slicks and a true 478 hp at the flywheel and 4000 stall.launchs very hard and no breakage..................3 seasons and only change the lube

8.2 or 8.5 ??

notsorryulost,

i would say you have done very well and been fortunate enough that a axle or cross shaft/spider gear has not failed yet.
when 1 does fail @ 100mph and launchs a tire/axle, i hope you are protected by a roll cage because you may need it.
i feel you are running on borrowed time if that is a 8.2 10 bolt. tom

i run a 10 bolt with eaton posi,4.11 richmond gears, yukon 28 spline axles, T/A girdle with 10 inche slicks and a true 478 hp at the flywheel and 4000 stall.launchs very hard and no breakage..................3 seasons and only change the lube


And if you run at Bremerton, let me know first. I'll get the hell outta the way.:yes: