Rear End Upgrade
- Thread starter Boost231
- Start date
Im thinking of staying with the original GM 8.5 to try and keep it looking somewhat original..just beefed up. If that makes any sence.
Plus i kinda already ordered my rear disc brakes from bear for a GM 8.5
-Auburm Pro Series 30 spline (8.5)
- Moser 30 spline axles
-TA girdle
-Motive gear ring & pinion (ratio unknown yet)
-Weld axle tubes
...what else would I need?
- Joined
- Sep 24, 2010
Get ahold of Neal. Lou is very specific in what he works on for customers, unless it's a personal project he sticks to intercooled Turbo Regals. Neal is a VERY smart guy.
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- Joined
- Sep 24, 2010
Agreed. A daily driver that's going to be romped on occasionally doesn't need any more than what you have in mind.
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Who's Neal?
Does it really matter what size of tire/rim size i have with the gear ratio?
I will be runing bigger rim size than usual. My baer brakes wont allow anything smaller tham 18".
I wont be at the track much. But i will be in the streets hoping to kill anyone thats willing.
- Joined
- Sep 24, 2010
I got my threads mixed up. Neal goes by 750H.P.V6 here.
So i've already ordered Auburn Pro series, Moser axels 30 spline, TA girdle and ARP cover bolts.
Im going with stock 3.42 stock gears like u guys have recommended. But Motive Gear's website has 3 to choose from. Not sure which one to order
A-line serious -GM10-342A
Motive Gear -GM10-342
Motive performance -G885342
Im going with stock 3.42 stock gears like u guys have recommended. But Motive Gear's website has 3 to choose from. Not sure which one to order
A-line serious -GM10-342A
Motive Gear -GM10-342
Motive performance -G885342
- Joined
- May 28, 2001
Could be application sensitive. Pure "race gears" are not intended to be used on the street. Might shoot them a note, and ask.
- Joined
- May 26, 2001
Chuck is correct that race gears are "softer" and less brittle than street gears so they will absorb shock better and are less likely to shed their teeth. I have replaced many ring and pinion sets with missing teeth in my race car over the years.
Since I do little street driving on my street car, I do not worry about the softer race gear having a shorter life span. When I upgrade rears, I never use the 30 year old original gears.
Please let us know your results, if any, of which is a race gear, thanks.
So I called Motive Gear today. Turns out you guys are correct.
Motive Gear # GM10-342 ("blue and black box") is more of an OEM replacement and its recommended as a daily driver option.
Motive Performance # G885342 is intended more towards racing applications
Motive Gear # GM10-342 ("blue and black box") is more of an OEM replacement and its recommended as a daily driver option.
Motive Performance # G885342 is intended more towards racing applications
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