Which sure grip unit to buy?

[superbeedave]

Hey all,
Looking to install a new sure grip unit for my 69 Superbee, where to buy one that is a good unit and not so expensive.

Thanks,
Dave

 

[1967coronet440]

Doctor diff

http://www.doctordiff.com/8-3-4-489-case-third-member.html

 

[superbeedave]

Thanks, I was looking into the Doc. just a little while ago.

 

[1967coronet440]

Thanks, I was looking into the Doc. just a little while ago.

That’s the way to go, small price to pay for peace of mind

 

[747mopar]

Don't think there really is a cheap option with used ones going for $400-600 unless you find someone that doesn't know what they have. Heard good things about Dr Diff.

 

[66Satellite47]

Which rear axle?

 

[moper]

I'll only buy the Tru Trac now. Great street piece, and you'll never break it or wear it out.

 

[fratzog lover]

I'll only buy the Tru Trac now. Great street piece, and you'll never break it or wear it out.

Love mine, pound it and will never break it at 300 hp. It was under 1K installed.

 

[superbeedave]

Which rear axle?

I have the 489 8 3/4 I believe, it is not the 742 it's open rear end as of right now,

 

[toolmanmike]

I'm not too familiar. Doesn't Dr Diff have a limited slip unit that works with the open carrier and gearset the op already has?

 

[1967coronet440]

I'm not too familiar. Doesn't Dr Diff have a limited slip unit that works with the open carrier and gearset the op already has?

I’m not 100% sure about that, best thing to do would be give him a call. Cass will answer emails all night too, when I first inquired about my s60 he responded to my email on a Sunday night around 10pm.

 

[5.7 hemi]

Why spend close to 450 for that piece of **** when you can get a clutch style sure grip from Cass for a little less money or toss a few bucks more for True Trac?

 

[66Satellite47]

I've always been a believer in the clutch type limited slip. Can be rebuilt. Had a couple before I went Dana, clutch type too. The Detroit Lockers always seemed to work well. Sure did "chirp" on the street though.

 

[idrivemopar]

Love mine, pound it and will never break it at 300 hp. It was under 1K installed.

I like and am using the Eaton truetrac, as stated, nothing to wear out or break inside of it.

 

[1969CoronetR/T]

I also have a 489 case with an Eaton Truetrac. Works great and no worries about it breaking or replacing clutches.

 

[threewood]

Another vote for Eaton Tru Trac. No special additives and a very robust design. Mine has been great, corners like an open, accelerates like a sure grip.

 

[MrJLR]

Doctor diff

http://www.doctordiff.com/8-3-4-489-case-third-member.html

I bought that one from him...I got the 3:55.
Eaton Trutrack.....working perfect.....

Jeff

 

[67belvedere/225]

I bought a sure grip from the dealer up here in Canada was the cheapest place to buy it

 

[Allan Wilkinson]

Hey all,
Looking to install a new sure grip unit for my 69 Superbee, where to buy one that is a good unit and not so expensive.

Thanks,
Dave

No need to get fancy, powr-lok sure grip for $395 will work fine, its rebuildable and I have run one in a 489 behind 500+ hp and a 4spd for over 10 years. Still lays down thick even black strips.

 

[209gtx]

Hey all,
Looking to install a new sure grip unit for my 69 Superbee, where to buy one that is a good unit and not so expensive.

Thanks,
Dave

I just bought a complete NEW 489 8.75 and TRUE trac from MOSER, No wear issues no special oils, and I bracket race with 13" x 29 slicks , also replaced axles as mine orginals, were worn on splines, the Tru Trac take a beating and work well on street ,