G body 8.5 or ford 9 inch

[565bbchevy]

Wellllll, I will cross that bridge when I get to it. For now the 8.5 is serving it's purpose.

Your LS twin turbo called and she said she wants a 9".

 

[Injectedcutty]

Your LS twin turbo called and she said she wants a 9".

Most likely right! I would sell off the 8.5 before causing destruction to it as they are getting harder to find.

 

[565bbchevy]

Most likely right! I would sell off the 8.5 before causing destruction to it as they are getting harder to find.

I did the same with my 7.5" with an Auburn carrier and 373 gears I had in my Monte, I sold it for what I had into it and before I blew it up.

 

[64nailhead]

If you're making under 800 hp then the 8.5" is still the best option. It is designed for the G body and still cheaper than a 9". Add it all up and 9" rears cost a lot more than you think.

800HP is the limit of an 8.5? Someone forgot to tell mine 🙂

 

[MC96]

I have only changed my gear once and it sure was nice bringing the 3rd member in a milk crate to DTS and having them change it for me.

In Ionia? I met one of the gear builders at the swap meet in Ionia this year, he lives just down the road from me

 

[thunderball]

Isnt the 8.5 a lot lighter then a 9?

Ive been looking for an 8.5 for a while to put behind my 305 ho. I dont want to bog it down with a heavy rear and when I eventually upgrade it wont be anything past 3xx hp so id rather not have an unecessarily strong or heavy rear.

 

[el camino ss 84]

My turbo 283 is backed with a ford 9inch and I never have to worry about it. Was one of the best decision I made instead of paying a premium price for a 8.5 then shelling out more to have it built to last. Only way to do a 8.5 is get a-body rear end for cheap then spend the extra money left from upgrades for proper wheels with the right backspacing.

 

[L92 OLDS]

Only way to do a 8.5 is get a-body rear end for cheap then spend the extra money left from upgrades for proper wheels with the right backspacing.

Well actually, that's not the only way. You can buy VIN 9 wrecks and G body parts for 30 years and have all the parts you'll ever need. 😎 Many on this site have.

 

[-83MONTESS-]

Isnt the 8.5 a lot lighter then a 9?

Ive been looking for an 8.5 for a while to put behind my 305 ho. I dont want to bog it down with a heavy rear and when I eventually upgrade it wont be anything past 3xx hp so id rather not have an unecessarily strong or heavy rear.

Yes it is. And uses less power. My buddy was sick to his stomach when he saw how much power he lost on the chassis dyno with his 650hp 489 stroker. That helped me make the decision to keep my 8.5. Good gears, axles, and carrier and forget about it.

I don't buy the 9 inch hype when plenty of GN/big block guys are going stupid fast on 8.5 rears.

An all out sub 10 second car/truck? Yea I could see it. Anything else I would really have to come across a deal to change it.

 

[MRSOSOUTHERN]

Does anyone have a posi 8.5 or Ford 9 inch for a 84 Monte Carlo ss for sale

Quick performance offers a really good one # (551) 232 0126